{"id":118147,"date":"2026-10-26T13:16:24","date_gmt":"2026-10-26T05:16:24","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/118147.html"},"modified":"2026-10-26T13:16:24","modified_gmt":"2026-10-26T05:16:24","slug":"%e5%9f%ba%e4%ba%8e%e6%99%ae%e6%9c%97%e5%85%8b%e8%bd%a8%e8%bf%b9%e6%8a%95%e5%bd%b1%e7%9a%84%e5%85%89%e6%ba%90%e4%bc%b0%e8%ae%a1-%e8%ae%ba%e6%96%87%e8%af%a6%e7%bb%86%e6%80%bb%e7%bb%93","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/118147.html","title":{"rendered":"\u57fa\u4e8e\u666e\u6717\u514b\u8f68\u8ff9\u6295\u5f71\u7684\u5149\u6e90\u4f30\u8ba1 \u2014 \u8bba\u6587\u8be6\u7ec6\u603b\u7ed3"},"content":{"rendered":"

Illuminant Estimation from Projections on the Planckian Locus<\/h2>\n

\u57fa\u4e8e\u666e\u6717\u514b\u8f68\u8ff9\u6295\u5f71\u7684\u5149\u6e90\u4f30\u8ba1 \u2014\u2014 \u8bba\u6587\u8be6\u7ec6\u603b\u7ed3（\u91cd\u70b9：\u6295\u5f71\u4e0e\u63d2\u503c\u539f\u7406）<\/h2>\n

\u8bba\u6587\u4fe1\u606f：Baptiste Mazin, Julie Delon, Yann Gousseau（LTCI, T\u00e9l\u00e9com-ParisTech, CNRS） ECCV 2012 Workshops (LNCS 7584), pp. 370\u2013379<\/p>\n

\u4e00\u53e5\u8bdd\u6982\u62ec：\u4e00\u79cd\u514d\u5b66\u4e60（learning-free）\u7684\u5149\u6e90\u81ea\u52a8\u4f30\u8ba1\u65b9\u6cd5\u2014\u2014\u7b5b\u9009\u51fa\u56fe\u50cf\u4e2d"\u6700\u53ef\u80fd\u662f\u7070\u8272"\u7684\u50cf\u7d20，\u628a\u5b83\u4eec\u6295\u5f71\u5230 CIE 1960 uv \u8272\u5ea6\u56fe\u4e0a\u7684\u666e\u6717\u514b\u8f68\u8ff9，\u7528\u6295\u5f71\u5f97\u5230\u7684\u8272\u6e29\u6784\u5efa\u52a0\u6743\u76f4\u65b9\u56fe\u6295\u7968，\u9009\u51fa\u6700\u53ef\u4fe1\u8272\u6e29 <\/p>\n

T<\/p>\n

0<\/p>\n

T_0<\/p>\n

<\/span><\/span>T<\/span><\/span>0<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>，\u6700\u540e\u7528\u6295\u7968\u50cf\u7d20\u7684\u52a0\u6743\u91cd\u5fc3\u5f97\u5230\u5b8c\u6574\u5149\u6e90\u8272\u5ea6\u3002<\/p>\n

\n

\u76ee\u5f55<\/h3>\n
  • \u95ee\u9898\u5b9a\u4e49\u4e0e\u52a8\u673a<\/li>\n
  • \u7406\u8bba\u57fa\u7840：\u6210\u50cf\u6a21\u578b\u4e0e\u666e\u6717\u514b\u5047\u8bbe<\/li>\n
  • \u5df2\u6709\u65b9\u6cd5\u56de\u987e（\u8bba\u6587\u7684\u5bf9\u6bd4\u57fa\u7ebf）<\/li>\n
  • \u6838\u5fc3\u65b9\u6cd5：\u666e\u6717\u514b\u8f68\u8ff9\u6295\u5f71 + \u6295\u7968（\u91cd\u70b9）<\/li>\n
  • \u6295\u5f71\u7684\u51e0\u4f55\u539f\u7406\u8be6\u89e3（\u91cd\u70b9）<\/li>\n
  • MIRED \u8272\u6e29\u5c3a\u5ea6\u4e0e\u76f4\u65b9\u56fe\u63d2\u503c（\u91cd\u70b9）<\/li>\n
  • Algorithm 1 \u5b8c\u6574\u6d41\u7a0b\u9010\u884c\u89e3\u8bfb<\/li>\n
  • \u7b97\u6cd5\u6d41\u7a0b\u56fe<\/li>\n
  • \u5b9e\u9a8c\u8bc4\u4f30<\/li>\n
  • \u603b\u7ed3\u4e0e\u542f\u793a<\/li>\n
    \n

    1. \u95ee\u9898\u5b9a\u4e49\u4e0e\u52a8\u673a<\/h3>\n

    1.1 \u95ee\u9898：\u6b20\u7ea6\u675f（underconstrained）<\/h4>\n

    \u4eba\u773c\u5728\u4e0d\u540c\u5149\u8c31\u5149\u6e90\u4e0b\u80fd\u7a33\u5b9a\u611f\u77e5\u7269\u4f53\u989c\u8272（\u8272\u5f69\u6052\u5e38\u6027），\u76f8\u673a\u5219\u4e0d\u80fd\u3002\u5149\u6e90\u4f30\u8ba1\u7684\u76ee\u6807\u662f\u4ece\u4e00\u5f20\u7167\u7247\u4e2d\u5206\u79bb\u51fa：<\/p>\n

    <\/p>\n

    \u89c2\u6d4b\u989c\u8272<\/p>\n

    =<\/p>\n

    f<\/p>\n

    (<\/p>\n

    \u7269\u4f53\u56fa\u6709\u989c\u8272<\/p>\n

    ,<\/p>\n

    \u00a0\u5149\u6e90\u989c\u8272<\/p>\n

    )<\/p>\n

    \\\\text{\u89c2\u6d4b\u989c\u8272} = f(\\\\text{\u7269\u4f53\u56fa\u6709\u989c\u8272},\\\\ \\\\text{\u5149\u6e90\u989c\u8272})<\/p>\n

    <\/span><\/span>\u89c2\u6d4b\u989c\u8272<\/span><\/span><\/span>=<\/span><\/span><\/span><\/span>f<\/span>(<\/span>\u7269\u4f53\u56fa\u6709\u989c\u8272<\/span><\/span>,<\/span>\u00a0<\/span><\/span>\u5149\u6e90\u989c\u8272<\/span><\/span>)<\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

    \u4e2d\u7684\u5149\u6e90\u6210\u5206 <\/p>\n

    L<\/p>\n

    =<\/p>\n

    (<\/p>\n

    L<\/p>\n

    R<\/p>\n

    ,<\/p>\n

    L<\/p>\n

    G<\/p>\n

    ,<\/p>\n

    L<\/p>\n

    B<\/p>\n

    )<\/p>\n

    \\\\mathbf{L} = (L_R, L_G, L_B)<\/p>\n

    <\/span><\/span>L<\/span><\/span>=<\/span><\/span><\/span><\/span>(<\/span>L<\/span><\/span>R<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>,<\/span><\/span>L<\/span><\/span>G<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>,<\/span><\/span>L<\/span><\/span>B<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>)<\/span><\/span><\/span><\/span><\/span>\u3002<\/p>\n

    \u6839\u672c\u56f0\u96be：\u540c\u6837\u7684\u50cf\u7d20\u503c\u53ef\u4ee5\u7531"\u4e0d\u540c\u7269\u4f53\u989c\u8272 \u00d7 \u4e0d\u540c\u5149\u6e90"\u7ec4\u5408\u4ea7\u751f\u2014\u2014\u8fd9\u662f\u4e00\u4e2a\u6b20\u7ea6\u675f\u95ee\u9898，\u5fc5\u987b\u5f15\u5165\u989d\u5916\u5047\u8bbe\u3002<\/p>\n

    1.2 \u5df2\u6709\u5047\u8bbe\u7684\u5c40\u9650<\/h4>\n\n\u5047\u8bbe\u7c7b\u578b\u4ee3\u8868\u7b97\u6cd5\u5931\u6548\u573a\u666f<\/tr>\n\n\n\n\n\n
    \u573a\u666f\u6784\u6210\u5047\u8bbe<\/td>\nWhite-Patch \/ Max-RGB\u3001Grey-World<\/td>\n\u573a\u666f\u4e2d\u65e0\u767d\u7269\u4f53 \/ \u5e73\u5747\u53cd\u5c04\u7387\u975e\u7070<\/td>\n<\/tr>\n
    \u7269\u7406\u6a21\u578b\u7ea6\u675f<\/td>\nGamut Mapping（Forsyth）<\/td>\n\u4f9d\u8d56\u8bad\u7ec3\u56fe\u50cf\u7684\u8272\u57df\u7edf\u8ba1<\/td>\n<\/tr>\n
    \u4e8c\u8272\u53cd\u5c04\u6a21\u578b<\/td>\n\u955c\u9762\u5206\u91cf\u65b9\u6cd5<\/td>\n\u9ad8\u5149\u4e0d\u8db3\u7684\u573a\u666f<\/td>\n<\/tr>\n
    \u591a\u65b9\u6cd5\u7ec4\u5408 + \u5b66\u4e60<\/td>\nML \u7c7b\u65b9\u6cd5<\/td>\n\u9700\u8981\u8bad\u7ec3\u6570\u636e<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u6ca1\u6709\u4efb\u4f55\u4e00\u4e2a\u5047\u8bbe\u5bf9\u6240\u6709"\u573a\u666f-\u5149\u6e90"\u7ec4\u5408\u90fd\u6210\u7acb，\u4e14\u4e0d\u540c\u65b9\u6cd5\u7684\u5931\u6548\u573a\u666f\u4e92\u4e0d\u76f8\u540c\u3002<\/p>\n

    1.3 \u672c\u6587\u7684\u51fa\u53d1\u70b9<\/h4>\n

    \u5f15\u5165\u4e24\u6761\u4e92\u8865\u7684\u5148\u9a8c：<\/p>\n

  • \u7269\u7406\u5148\u9a8c：\u7edd\u5927\u591a\u6570\u5149\u6e90（\u65e5\u5149\u3001\u767d\u70bd\u706f\u7b49）\u9760\u8fd1\u666e\u6717\u514b\u8f68\u8ff9（\u9ed1\u4f53\u8f90\u5c04\u8f68\u8ff9）；<\/li>\n
  • \u50cf\u7d20\u7ea7\u5148\u9a8c：\u56fe\u50cf\u4e2d\u5b58\u5728\u4e00\u90e8\u5206"\u7591\u4f3c\u7070\u8272"\u7684\u50cf\u7d20（\u7070\u8272\u8868\u9762\u5728\u4efb\u610f\u5149\u6e90\u4e0b\u6210\u50cf\u4e3a\u5149\u6e90\u989c\u8272\u672c\u8eab）\u3002<\/li>\n

    \u65b9\u6cd5\u5b8c\u5168\u514d\u5b66\u4e60，\u8ba1\u7b97\u4ee3\u4ef7\u5408\u7406，\u6027\u80fd\u8fbe\u5230\u514d\u5b66\u4e60\u65b9\u6cd5\u4e2d\u7684\u6700\u4f18\u6c34\u5e73\u3002<\/p>\n

    \n

    2. \u7406\u8bba\u57fa\u7840：\u6210\u50cf\u6a21\u578b\u4e0e\u666e\u6717\u514b\u5047\u8bbe<\/h3>\n

    2.1 \u8272\u5f69\u6210\u50cf\u6a21\u578b（Lambertian \u7b80\u5316\u7684\u4e8c\u8272\u6a21\u578b）<\/h4>\n

    \u50cf\u7d20\u503c\u7531\u5149\u6e90\u5149\u8c31 <\/p>\n

    L<\/p>\n

    (<\/p>\n

    \u03bb<\/p>\n

    )<\/p>\n

    L(\\\\lambda)<\/p>\n

    <\/span><\/span>L<\/span>(<\/span>\u03bb<\/span>)<\/span><\/span><\/span><\/span><\/span>\u3001\u8868\u9762\u53cd\u5c04\u7387 <\/p>\n

    S<\/p>\n

    (<\/p>\n

    \u03bb<\/p>\n

    ,<\/p>\n

    x<\/p>\n

    )<\/p>\n

    S(\\\\lambda, x)<\/p>\n

    <\/span><\/span>S<\/span>(<\/span>\u03bb<\/span>,<\/span><\/span>x<\/span>)<\/span><\/span><\/span><\/span><\/span>\u3001\u76f8\u673a\u5149\u8c31\u7075\u654f\u5ea6 <\/p>\n

    \u03c1<\/p>\n

    c<\/p>\n

    (<\/p>\n

    \u03bb<\/p>\n

    )<\/p>\n

    \\\\rho_c(\\\\lambda)<\/p>\n

    <\/span><\/span>\u03c1<\/span><\/span>c<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>(<\/span>\u03bb<\/span>)<\/span><\/span><\/span><\/span><\/span> \u51b3\u5b9a：<\/p>\n

    <\/p>\n

    p<\/p>\n

    c<\/p>\n

    (<\/p>\n

    x<\/p>\n

    )<\/p>\n

    =<\/p>\n

    \u222b<\/p>\n

    \u03c9<\/p>\n

    L<\/p>\n

    (<\/p>\n

    \u03bb<\/p>\n

    )
    \n \u2009<\/p>\n

    S<\/p>\n

    (<\/p>\n

    \u03bb<\/p>\n

    ,<\/p>\n

    x<\/p>\n

    )
    \n \u2009<\/p>\n

    \u03c1<\/p>\n

    c<\/p>\n

    (<\/p>\n

    \u03bb<\/p>\n

    )
    \n \u2009<\/p>\n

    d<\/p>\n

    \u03bb<\/p>\n

    ,<\/p>\n

    c<\/p>\n

    \u2208<\/p>\n

    {<\/p>\n

    R<\/p>\n

    ,<\/p>\n

    G<\/p>\n

    ,<\/p>\n

    B<\/p>\n

    }<\/p>\n

    p_c(x) = \\\\int_\\\\omega L(\\\\lambda)\\\\, S(\\\\lambda, x)\\\\, \\\\rho_c(\\\\lambda)\\\\, d\\\\lambda, \\\\qquad c \\\\in \\\\{R, G, B\\\\}<\/p>\n

    <\/span><\/span>p<\/span><\/span>c<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>(<\/span>x<\/span>)<\/span><\/span>=<\/span><\/span><\/span><\/span>\u222b<\/span><\/span>\u03c9<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>L<\/span>(<\/span>\u03bb<\/span>)<\/span><\/span>S<\/span>(<\/span>\u03bb<\/span>,<\/span><\/span>x<\/span>)<\/span><\/span>\u03c1<\/span><\/span>c<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>(<\/span>\u03bb<\/span>)<\/span><\/span>d<\/span>\u03bb<\/span>,<\/span><\/span><\/span>c<\/span><\/span>\u2208<\/span><\/span><\/span><\/span>{<\/span>R<\/span>,<\/span><\/span>G<\/span>,<\/span><\/span>B<\/span>}<\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

    \u82e5\u628a\u76f8\u673a\u7075\u654f\u5ea6\u8fd1\u4f3c\u4e3a\u6ce2\u957f <\/p>\n

    \u03bb<\/p>\n

    R<\/p>\n

    ,<\/p>\n

    \u03bb<\/p>\n

    G<\/p>\n

    ,<\/p>\n

    \u03bb<\/p>\n

    B<\/p>\n

    \\\\lambda_R, \\\\lambda_G, \\\\lambda_B<\/p>\n

    <\/span><\/span>\u03bb<\/span><\/span>R<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>,<\/span><\/span>\u03bb<\/span><\/span>G<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>,<\/span><\/span>\u03bb<\/span><\/span>B<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> \u5904\u7684 Dirac \u03b4 \u51fd\u6570，\u5219\u9000\u5316\u4e3a\u4e58\u6027\u6a21\u578b：<\/p>\n

    <\/p>\n

    p<\/p>\n

    c<\/p>\n

    (<\/p>\n

    x<\/p>\n

    )<\/p>\n

    =<\/p>\n

    L<\/p>\n

    (<\/p>\n

    \u03bb<\/p>\n

    c<\/p>\n

    )
    \n \u2009<\/p>\n

    S<\/p>\n

    (<\/p>\n

    \u03bb<\/p>\n

    c<\/p>\n

    ,<\/p>\n

    x<\/p>\n

    )<\/p>\n

    p_c(x) = L(\\\\lambda_c)\\\\, S(\\\\lambda_c, x)<\/p>\n

    <\/span><\/span>p<\/span><\/span>c<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>(<\/span>x<\/span>)<\/span><\/span>=<\/span><\/span><\/span><\/span>L<\/span>(<\/span>\u03bb<\/span><\/span>c<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>)<\/span><\/span>S<\/span>(<\/span>\u03bb<\/span><\/span>c<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>,<\/span><\/span>x<\/span>)<\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

    \u5149\u6e90\u4f30\u8ba1\u5373\u6c42 <\/p>\n

    L<\/p>\n

    =<\/p>\n

    (<\/p>\n

    L<\/p>\n

    (<\/p>\n

    \u03bb<\/p>\n

    R<\/p>\n

    )<\/p>\n

    ,<\/p>\n

    L<\/p>\n

    (<\/p>\n

    \u03bb<\/p>\n

    G<\/p>\n

    )<\/p>\n

    ,<\/p>\n

    L<\/p>\n

    (<\/p>\n

    \u03bb<\/p>\n

    B<\/p>\n

    )<\/p>\n

    )<\/p>\n

    \\\\mathbf{L} = (L(\\\\lambda_R), L(\\\\lambda_G), L(\\\\lambda_B))<\/p>\n

    <\/span><\/span>L<\/span><\/span>=<\/span><\/span><\/span><\/span>(<\/span>L<\/span>(<\/span>\u03bb<\/span><\/span>R<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>)<\/span>,<\/span><\/span>L<\/span>(<\/span>\u03bb<\/span><\/span>G<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>)<\/span>,<\/span><\/span>L<\/span>(<\/span>\u03bb<\/span><\/span>B<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>))<\/span><\/span><\/span><\/span><\/span>；\u6c42\u5f97\u540e\u53ef\u7528 Von Kries \u6a21\u578b（\u5bf9\u89d2\u9635\u767d\u5e73\u8861）\u6216\u66f4\u590d\u6742\u6a21\u578b\u628a\u573a\u666f\u6821\u6b63\u5230\u6807\u51c6\u5149\u6e90 <\/p>\n

    L<\/p>\n

    u<\/p>\n

    L_u<\/p>\n

    <\/span><\/span>L<\/span><\/span>u<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> \u4e0b\u3002<\/p>\n

    2.2 \u666e\u6717\u514b\u9ed1\u4f53\u8f90\u5c04\u5047\u8bbe<\/h4>\n

    \u7406\u60f3\u9ed1\u4f53\u5728\u6e29\u5ea6 <\/p>\n

    T<\/p>\n

    T<\/p>\n

    <\/span><\/span>T<\/span><\/span><\/span><\/span><\/span>（\u5f00\u5c14\u6587）\u4e0b\u7684\u8f90\u5c04\u5149\u8c31\u7531\u666e\u6717\u514b\u516c\u5f0f\u7ed9\u51fa：<\/p>\n

    <\/p>\n

    L<\/p>\n

    (<\/p>\n

    T<\/p>\n

    ,<\/p>\n

    \u03bb<\/p>\n

    )<\/p>\n

    =<\/p>\n

    c<\/p>\n

    1<\/p>\n

    \u03bb<\/p>\n

    \u2212<\/p>\n

    5<\/p>\n

    [<\/p>\n

    exp<\/p>\n

    \u2061
    \n \u2009\u2063<\/p>\n

    (<\/p>\n

    c<\/p>\n

    2<\/p>\n

    \u03bb<\/p>\n

    T<\/p>\n

    )<\/p>\n

    \u2212<\/p>\n

    1<\/p>\n

    ]<\/p>\n

    \u2212<\/p>\n

    1<\/p>\n

    L(T, \\\\lambda) = c_1 \\\\lambda^{-5} \\\\left[\\\\exp\\\\!\\\\left(\\\\frac{c_2}{\\\\lambda T}\\\\right) – 1\\\\right]^{-1}<\/p>\n

    <\/span><\/span>L<\/span>(<\/span>T<\/span>,<\/span><\/span>\u03bb<\/span>)<\/span><\/span>=<\/span><\/span><\/span><\/span>c<\/span><\/span>1<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u03bb<\/span><\/span>\u2212<\/span>5<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>[<\/span><\/span>exp<\/span><\/span><\/span>(<\/span><\/span><\/span><\/span>\u03bb<\/span>T<\/span><\/span><\/span><\/span><\/span><\/span><\/span>c<\/span><\/span>2<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>)<\/span><\/span><\/span><\/span>\u2212<\/span><\/span>1<\/span>]<\/span><\/span><\/span><\/span>\u2212<\/span>1<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

    \u5176\u4e2d <\/p>\n

    c<\/p>\n

    1<\/p>\n

    =<\/p>\n

    3.74183<\/p>\n

    \u00d7<\/p>\n

    10<\/p>\n

    16<\/p>\n

    \u00a0<\/p>\n

    W<\/p>\n

    m<\/p>\n

    2<\/p>\n

    c_1 = 3.74183 \\\\times 10^{16}\\\\ \\\\mathrm{Wm^2}<\/p>\n

    <\/span><\/span>c<\/span><\/span>1<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>=<\/span><\/span><\/span><\/span>3.74183<\/span><\/span>\u00d7<\/span><\/span><\/span><\/span>1<\/span>0<\/span><\/span>16<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u00a0<\/span>W<\/span>m<\/span><\/span>2<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>，<\/p>\n

    c<\/p>\n

    2<\/p>\n

    =<\/p>\n

    1.4388<\/p>\n

    \u00d7<\/p>\n

    10<\/p>\n

    \u2212<\/p>\n

    2<\/p>\n

    \u00a0<\/p>\n

    m<\/p>\n

    K<\/p>\n

    c_2 = 1.4388 \\\\times 10^{-2}\\\\ \\\\mathrm{mK}<\/p>\n

    <\/span><\/span>c<\/span><\/span>2<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>=<\/span><\/span><\/span><\/span>1.4388<\/span><\/span>\u00d7<\/span><\/span><\/span><\/span>1<\/span>0<\/span><\/span>\u2212<\/span>2<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u00a0<\/span>mK<\/span><\/span><\/span><\/span><\/span><\/span>\u3002<\/p>\n

    \u5173\u952e\u63a8\u8bba：\u666e\u6717\u514b\u516c\u5f0f\u80fd\u51c6\u786e\u8fd1\u4f3c\u5927\u591a\u6570\u771f\u5b9e\u5149\u6e90（\u5c24\u5176\u662f\u65e5\u5149 [11]）\u7684\u5149\u8c31\u3002\u56e0\u6b64\u5728\u9ed1\u4f53\u5047\u8bbe\u4e0b，\u7070\u8272\u50cf\u7d20\u53ef\u80fd\u5448\u73b0\u7684\u989c\u8272\u88ab\u9650\u5236\u5728\u8272\u5ea6\u56fe\u4e0a\u4e00\u6761\u66f2\u7ebf\u9644\u8fd1\u2014\u2014\u666e\u6717\u514b\u8f68\u8ff9（Planckian locus）\u3002\u8fd9\u5c31\u662f"\u53ef\u884c\u5149\u6e90\u8272\u5ea6\u7ea6\u675f"\u3002<\/p>\n

    2.3 \u8272\u5ea6\u56fe<\/h4>\n

    \u8272\u5ea6\u56fe\u662f 3D \u989c\u8272\u4fe1\u606f\u4e22\u5f03\u5f3a\u5ea6\u5206\u91cf\u540e\u7684 2D \u6295\u5f71：<\/p>\n

      \n
    • RGB \u2192（\u8bbe\u5907\u76f8\u5173\u77e9\u9635）\u2192 XYZ \u2192 \u5f52\u4e00\u5316 \n

      x<\/p>\n

      +<\/p>\n

      y<\/p>\n

      +<\/p>\n

      z<\/p>\n

      =<\/p>\n

      1<\/p>\n

      x + y + z = 1<\/p>\n

      <\/span><\/span>x<\/span><\/span>+<\/span><\/span><\/span><\/span>y<\/span><\/span>+<\/span><\/span><\/span><\/span>z<\/span><\/span>=<\/span><\/span><\/span><\/span>1<\/span><\/span><\/span><\/span><\/span> \u2192 CIE 1931 xy \u8272\u5ea6\u56fe；<\/li>\n

    • \u672c\u6587\u5b9e\u9645\u4f7f\u7528 CIE 1960 uv \u8272\u5ea6\u56fe（\u539f\u56e0\u89c1\u7b2c 5 \u8282）\u3002<\/li>\n<\/ul>\n
      \n

      3. \u5df2\u6709\u65b9\u6cd5（\u5bf9\u6bd4\u57fa\u7ebf）<\/h3>\n

      3.1 \u5168\u50cf\u7d20\u7edf\u8ba1\u7c7b<\/h4>\n

      Shades of Grey \u6846\u67b6（Finlayson [13]）\u2014\u2014\u7edf\u4e00\u4e86 Grey-World \u4e0e Max-RGB：<\/p>\n

      <\/p>\n

      L<\/p>\n

      c<\/p>\n

      =<\/p>\n

      (<\/p>\n

      \u222b<\/p>\n

      p<\/p>\n

      c<\/p>\n

      (<\/p>\n

      x<\/p>\n

      )<\/p>\n

      n<\/p>\n

      \u2009<\/p>\n

      d<\/p>\n

      x<\/p>\n

      \u222b<\/p>\n

      d<\/p>\n

      x<\/p>\n

      )<\/p>\n

      1<\/p>\n

      \/<\/p>\n

      n<\/p>\n

      L_c = \\\\left( \\\\frac{\\\\int p_c(x)^n\\\\, dx}{\\\\int dx} \\\\right)^{1\/n}<\/p>\n

      <\/span><\/span>L<\/span><\/span>c<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>=<\/span><\/span><\/span><\/span>(<\/span><\/span><\/span><\/span>\u222b<\/span><\/span>d<\/span>x<\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u222b<\/span><\/span>p<\/span><\/span>c<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>(<\/span>x<\/span>)<\/span><\/span>n<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>d<\/span>x<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>)<\/span><\/span><\/span><\/span>1\/<\/span>n<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

        \n
      • \n

        n<\/p>\n

        =<\/p>\n

        1<\/p>\n

        n = 1<\/p>\n

        <\/span><\/span>n<\/span><\/span>=<\/span><\/span><\/span><\/span>1<\/span><\/span><\/span><\/span><\/span>：Grey-World（\u573a\u666f\u5e73\u5747\u53cd\u5c04\u7387\u65e0\u8272）；<\/li>\n

      • \n

        n<\/p>\n

        =<\/p>\n

        \u221e<\/p>\n

        n = \\\\infty<\/p>\n

        <\/span><\/span>n<\/span><\/span>=<\/span><\/span><\/span><\/span>\u221e<\/span><\/span><\/span><\/span><\/span>：Max-RGB（White-Patch，\u6700\u4eae\u70b9\u4e3a\u5b8c\u7f8e\u53cd\u5c04\u9762）；<\/li>\n

      • general Grey-World [14]：\u5148\u505a\u9ad8\u65af\u5377\u79ef\u518d\u7edf\u8ba1\u3002<\/li>\n<\/ul>\n

        Grey-Edge（van de Weijer [15]）\u2014\u2014\u6269\u5c55\u5230\u68af\u5ea6\u57df：<\/p>\n

        <\/p>\n

        L<\/p>\n

        c<\/p>\n

        =<\/p>\n

        (<\/p>\n

        \u222b<\/p>\n

        \u2225<\/p>\n

        \u2202<\/p>\n

        k<\/p>\n

        p<\/p>\n

        c<\/p>\n

        (<\/p>\n

        x<\/p>\n

        )<\/p>\n

        \u2202<\/p>\n

        x<\/p>\n

        k<\/p>\n

        \u2225<\/p>\n

        n<\/p>\n

        d<\/p>\n

        x<\/p>\n

        )<\/p>\n

        1<\/p>\n

        \/<\/p>\n

        n<\/p>\n

        L_c = \\\\left( \\\\int \\\\left\\\\| \\\\frac{\\\\partial^k p_c(x)}{\\\\partial x^k} \\\\right\\\\|^n dx \\\\right)^{1\/n}<\/p>\n

        <\/span><\/span>L<\/span><\/span>c<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>=<\/span><\/span><\/span><\/span>(<\/span><\/span>\u222b<\/span><\/span><\/span><\/p>\n

        <\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u2202<\/span>x<\/span><\/span>k<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u2202<\/span><\/span>k<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>p<\/span><\/span>c<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>(<\/span>x<\/span>)<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

        <\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>n<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>d<\/span>x<\/span>)<\/span><\/span><\/span><\/span>1\/<\/span>n<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

        （\u5047\u8bbe\u53cd\u5c04\u7387\u5dee\u5206\u7684\u5e73\u5747\u662f\u65e0\u8272\u7684\u3002）<\/p>\n

        3.2 \u7070\u50cf\u7d20\u68c0\u6d4b\u7c7b<\/h4>\n

        \u5148\u68c0\u6d4b"\u53ef\u80fd\u662f\u7070\u8272\u8868\u9762"\u7684\u50cf\u7d20，\u518d\u4ece\u8fd9\u4e9b\u50cf\u7d20\u4f30\u8ba1\u5149\u6e90 [16][17]：<\/p>\n

          \n
        • Li \u7b49 [16]：\u8fed\u4ee3\u4f30\u8ba1\u4f7f\u7070\u50cf\u7d20\u6570\u76ee\u6700\u5927\u7684\u767d\u70b9\u2014\u2014\u4f46\u521d\u59cb\u4f30\u8ba1（\u6765\u81ea\u5f0f(5)）\u53ef\u80fd\u4e0d\u51c6，\u4f5c\u8005\u81ea\u5df1\u4e5f\u627f\u8ba4\u8fd9\u4e00\u6b65\u975e\u5e38\u68d8\u624b；<\/li>\n
        • Kwon \u7b49 [17]：\u5728\u8272\u5ea6\u7a7a\u95f4\u4e2d\u9009\u53d6\u9760\u8fd1\u666e\u6717\u514b\u8f68\u8ff9\u7684\u70b9\u518d\u53d6\u5e73\u5747\u2014\u2014\u53ef\u907f\u514d"\u7d2b\u8272\u5149\u6e90"\u8fd9\u7c7b\u8352\u8c2c\u4f30\u8ba1，\u4f46\u5f53\u573a\u666f\u4e2d\u5b58\u5728\u4e24\u4e2a\u7070\u8272\u8868\u9762\u65f6\u4f1a\u5931\u8d25（\u5e73\u5747\u7ed3\u679c\u843d\u5728\u4e24\u8868\u9762\u4e4b\u95f4\u7684\u4e2d\u95f4\u70b9，\u4e24\u4e2a\u90fd\u4e0d\u662f\u771f\u5b9e\u5149\u6e90）\u3002<\/li>\n<\/ul>\n

          3.3 \u6295\u7968\u7c7b\u65b9\u6cd5<\/h4>\n
            \n
          • Sapiro [18]：\u6bcf\u4e2a\u50cf\u7d20\u5bf9\u53cd\u5c04\u7387\u53c2\u6570\u96c6\u6295\u7968，Hough \u53d8\u6362\u9009\u6700\u4f18；<\/li>\n
          • Riess \u7b49 [19]：\u9009\u5f88\u591a patch，\u5404\u81ea\u5728\u9006\u8272\u5ea6\u7a7a\u95f4\u4f30\u8ba1\u5149\u6e90，\u6210\u529f\u7684 patch \u6295\u7968；<\/li>\n
          • Vazquez-Corral \u7b49 [20]：\u7528"\u901a\u7528\u989c\u8272\u7c7b\u522b"\u7684\u611f\u77e5\u7ea6\u675f\u52a0\u6743\u6295\u7968，\u540c\u6837\u514d\u5b66\u4e60\u3002<\/li>\n<\/ul>\n

            \u672c\u6587\u65b9\u6cd5\u5c5e\u4e8e"\u7070\u50cf\u7d20\u68c0\u6d4b + \u6295\u7968"\u7684\u878d\u5408，\u4f46\u7528\u76f4\u65b9\u56fe\u6295\u7968\u66ff\u4ee3\u7b80\u5355\u5e73\u5747，\u4ece\u800c\u514b\u670d [17] \u7684"\u591a\u7070\u8868\u9762\u53d6\u4e2d\u95f4\u70b9"\u7f3a\u9677\u3002<\/p>\n

            \n

            4. \u6838\u5fc3\u65b9\u6cd5：\u666e\u6717\u514b\u8f68\u8ff9\u6295\u5f71 + \u6295\u7968（\u91cd\u70b9）<\/h3>\n

            4.1 \u65b9\u6cd5\u601d\u60f3（\u56db\u6b65）<\/h4>\n

            \u2460 \u7b5b\u9009\u7070\u50cf\u7d20：\u5728\u8272\u5ea6\u7a7a\u95f4\u4e2d\u627e\u9760\u8fd1\u666e\u6717\u514b\u8f68\u8ff9\u7684\u50cf\u7d20
            \n \u2193 （\u8fd9\u4e9b\u50cf\u7d20 = "\u6700\u53ef\u80fd\u662f\u7070\u8272"\u7684\u50cf\u7d20）
            \n\u2461 \u6295\u5f71\u6c42\u8272\u6e29：\u628a\u6bcf\u4e2a\u7070\u50cf\u7d20\u6295\u5f71\u5230\u666e\u6717\u514b\u8f68\u8ff9，\u5f97\u5230\u5176\u8272\u6e29 T(p)
            \n \u2193
            \n\u2462 \u76f4\u65b9\u56fe\u6295\u7968：\u4ee5 MIRED \u5c3a\u5ea6\u6784\u5efa\u52a0\u6743\u8272\u6e29\u76f4\u65b9\u56fe，\u53d6\u5cf0\u503c T\u2080
            \n \u2193 （\u6295\u7968\u89e3\u51b3"\u591a\u4e2a\u7070\u8272\u8868\u9762"\u7684\u6b67\u4e49\u2014\u2014\u53d6\u4e3b\u5bfc\u6e29\u5ea6\u800c\u975e\u5e73\u5747）
            \n\u2463 \u52a0\u6743\u91cd\u5fc3：\u5bf9\u6295\u7968\u7ed9 T\u2080 \u90bb\u57df\u7684\u6240\u6709\u50cf\u7d20，\u6309\u4eae\u5ea6\u52a0\u6743\u6c42\u8272\u5ea6\u91cd\u5fc3
            \n \u2193
            \n \u8f93\u51fa\u5149\u6e90\u8272\u5ea6 (u\u2080, v\u2080)<\/p>\n

            4.2 \u4e0e\u7b80\u5355\u5e73\u5747\u65b9\u6cd5（[17]）\u7684\u672c\u8d28\u533a\u522b<\/h4>\n\n\u7b80\u5355\u5e73\u5747 [17]\u672c\u6587\u6295\u7968\u6cd5<\/tr>\n\n\n\n\n
            \u591a\u7070\u8868\u9762\u573a\u666f<\/td>\n\u8f93\u51fa\u4e24\u8868\u9762\u8272\u5ea6\u7684\u4e2d\u95f4\u70b9（\u9519\u8bef，\u4e24\u8fb9\u90fd\u4e0d\u5bf9）<\/td>\n\u76f4\u65b9\u56fe\u51fa\u73b0\u4e24\u4e2a\u5cf0，\u53d6\u4e3b\u5bfc\u5cf0 <\/p>\n

            T<\/p>\n

            0<\/p>\n

            T_0<\/p>\n

            <\/span><\/span>T<\/span><\/span>0<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>（\u6b63\u786e\u5bf9\u9f50\u5176\u4e2d\u4e00\u4e2a\u8868\u9762）<\/td>\n<\/tr>\n

            \u79bb\u7fa4\u50cf\u7d20<\/td>\n\u76f4\u63a5\u62c9\u504f\u5e73\u5747\u503c<\/td>\n\u88ab\u76f4\u65b9\u56fe\u5cf0\u503c\u9009\u62e9\u81ea\u7136\u6291\u5236<\/td>\n<\/tr>\n
            \u53ef\u89e3\u91ca\u6027<\/td>\n\u65e0\u4e2d\u95f4\u4fe1\u606f<\/td>\n\u76f4\u65b9\u56fe\u7ed9\u51fa\u56fe\u50cf\u4e2d\u6240\u6709"\u5019\u9009\u5149\u6e90"\u7684\u5206\u5e03（\u8bba\u6587\u6307\u51fa\u53ef\u7528\u4e8e\u591a\u5149\u6e90\u4f30\u8ba1）<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

            4.3 \u4e09\u4e2a\u5173\u952e\u8bbe\u8ba1\u9009\u62e9<\/h4>\n
          • \u8272\u5ea6\u7a7a\u95f4\u9009 CIE 1960 uv：CIE \u63a8\u8350\u7684\u7a7a\u95f4，\u5176\u4e2d\u7b49\u6e29\u7ebf（isotherms）\u5b9a\u4e49\u4e3a\u666e\u6717\u514b\u8f68\u8ff9\u7684\u5782\u7ebf\u2014\u2014\u56e0\u6b64\u4e00\u4e2a\u50cf\u7d20\u7684 CCT \u5c31\u7b49\u4e8e\u8f68\u8ff9\u4e0a\u79bb\u5b83\u6700\u8fd1\u7684\u9ed1\u4f53\u7684\u6e29\u5ea6（\u6700\u8fd1\u70b9\u6295\u5f71 = \u8272\u6e29\u8bfb\u53d6，\u89c1\u7b2c 5 \u8282）；<\/li>\n
          • \u8272\u6e29\u5c3a\u5ea6\u9009 MIRED（\n

            T<\/p>\n

            M<\/p>\n

            i<\/p>\n

            r<\/p>\n

            e<\/p>\n

            d<\/p>\n

            =<\/p>\n

            10<\/p>\n

            6<\/p>\n

            \/<\/p>\n

            T<\/p>\n

            T_{Mired} = 10^6 \/ T<\/p>\n

            <\/span><\/span>T<\/span><\/span>M<\/span>i<\/span>r<\/span>e<\/span>d<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>=<\/span><\/span><\/span><\/span>1<\/span>0<\/span><\/span>6<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\/<\/span>T<\/span><\/span><\/span><\/span><\/span>）：\u5f00\u5c14\u6587\u5c3a\u5ea6\u5bf9\u666e\u6717\u514b\u8f68\u8ff9\u7684\u91c7\u6837\u4e0d\u5747\u5300，MIRED \u5c3a\u5ea6（Priest [22]）\u7b26\u5408\u4eba\u773c\u611f\u77e5，\u91c7\u6837\u5747\u5300（\u89c1\u7b2c 6 \u8282）；<\/li>\n

          • \u4eae\u5ea6\u52a0\u6743\u6295\u7968：\u6bcf\u4e2a\u50cf\u7d20\u7684\u6295\u7968\u6743\u91cd\u4e3a \n

            luminance<\/p>\n

            (<\/p>\n

            p<\/p>\n

            )<\/p>\n

            n<\/p>\n

            \\\\text{luminance}(p)^n<\/p>\n

            <\/span><\/span>luminance<\/span><\/span>(<\/span>p<\/span>)<\/span><\/span>n<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u2014\u2014\u6697\u50cf\u7d20\u566a\u58f0\u5927\u3001\u4e0d\u53ef\u9760，\u7ed9\u5c0f\u6743\u91cd；\u4eae\u50cf\u7d20\u66f4\u63a5\u8fd1 White-Patch \u7684\u53ef\u4fe1\u89c2\u6d4b\u3002\u8fd9\u662f Grey-World \u4e0e White-Patch \u4e24\u79cd\u5047\u8bbe\u4e4b\u95f4\u7684\u6298\u4e2d（<\/p>\n

            n<\/p>\n

            n<\/p>\n

            <\/span><\/span>n<\/span><\/span><\/span><\/span><\/span> \u63a7\u5236\u504f\u5411：<\/p>\n

            n<\/p>\n

            n<\/p>\n

            <\/span><\/span>n<\/span><\/span><\/span><\/span><\/span> \u8d8a\u5927\u8d8a\u63a5\u8fd1 White-Patch）\u3002<\/li>\n

            \n

            5. \u6295\u5f71\u7684\u51e0\u4f55\u539f\u7406\u8be6\u89e3（\u91cd\u70b9）<\/h3>\n

            5.1 \u4e3a\u4ec0\u4e48"\u6295\u5f71 = \u8bfb\u51fa\u8272\u6e29"<\/h4>\n

            \u5728 CIE 1960 uv \u5e73\u9762\u4e0a：<\/p>\n

            v
            \n \u2502 \u25cf \u9ed1\u4f53 6500K
            \n \u2502 \u25cf
            \n \u2502 \u25cf \u2190 \u666e\u6717\u514b\u8f68\u8ff9（\u9ed1\u4f53\u968f\u6e29\u5ea6\u79fb\u52a8\u7684\u66f2\u7ebf）
            \n \u2502 \u25cf
            \n \u2502\u25cf \u9ed1\u4f53 2500K
            \n \u2502 P（\u67d0\u50cf\u7d20\u8272\u5ea6）
            \n \u2502 \u2193 \u6cbf\u7b49\u6e29\u7ebf（\u8f68\u8ff9\u5782\u7ebf）\u6295\u5f71
            \n \u2502 \u25cf p_Planck（\u5782\u8db3）
            \n \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500 u<\/p>\n

              \n
            • \u7b49\u6e29\u7ebf：\u8fc7\u666e\u6717\u514b\u8f68\u8ff9\u4e0a\u6bcf\u4e00\u70b9\u3001\u5782\u76f4\u4e8e\u8f68\u8ff9\u7684\u76f4\u7ebf\u65cf\u3002\u540c\u4e00\u7b49\u6e29\u7ebf\u4e0a\u7684\u6240\u6709\u8272\u5ea6\u70b9\u5177\u6709\u76f8\u540c\u7684\u76f8\u5173\u8272\u6e29（CCT）；<\/li>\n
            • CCT \u7684\u5b9a\u4e49（\u5728 uv \u7a7a\u95f4）：\u50cf\u7d20\u7684 CCT = \u5176\u6700\u8fd1\u9ed1\u4f53\u8f90\u5c04\u4f53\u7684\u6e29\u5ea6；<\/li>\n
            • \u56e0\u6b64"\u628a\u50cf\u7d20 \n

              p<\/p>\n

              u<\/p>\n

              v<\/p>\n

              p_{uv}<\/p>\n

              <\/span><\/span>p<\/span><\/span>uv<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> \u6295\u5f71\u5230\u8f68\u8ff9\u4e0a\u6700\u8fd1\u70b9 <\/p>\n

              p<\/p>\n

              P<\/p>\n

              l<\/p>\n

              a<\/p>\n

              n<\/p>\n

              c<\/p>\n

              k<\/p>\n

              p_{Planck}<\/p>\n

              <\/span><\/span>p<\/span><\/span>P<\/span>l<\/span>an<\/span>c<\/span>k<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>"\u8fd9\u4e00\u64cd\u4f5c，\u540c\u65f6\u5b8c\u6210\u4e24\u4ef6\u4e8b： <\/p>\n

            • \u8ddd\u79bb\u5224\u65ad：\n

              d<\/p>\n

              =<\/p>\n

              \u2225<\/p>\n

              p<\/p>\n

              u<\/p>\n

              v<\/p>\n

              \u2212<\/p>\n

              p<\/p>\n

              P<\/p>\n

              l<\/p>\n

              a<\/p>\n

              n<\/p>\n

              c<\/p>\n

              k<\/p>\n

              \u2225<\/p>\n

              d = \\\\|p_{uv} – p_{Planck}\\\\|<\/p>\n

              <\/span><\/span>d<\/span><\/span>=<\/span><\/span><\/span><\/span>\u2225<\/span>p<\/span><\/span>uv<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u2212<\/span><\/span><\/span><\/span>p<\/span><\/span>P<\/span>l<\/span>an<\/span>c<\/span>k<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u2225<\/span><\/span><\/span><\/span><\/span>\u2014\u2014\u8861\u91cf\u8be5\u50cf\u7d20"\u6709\u591a\u50cf\u7070\u8272"\u3002<\/p>\n

              d<\/p>\n

              <<\/p>\n

              \u03b4<\/p>\n

              d < \\\\delta<\/p>\n

              <\/span><\/span>d<\/span><\/span><<\/span><\/span><\/span><\/span>\u03b4<\/span><\/span><\/span><\/span><\/span>（\u5982 0.01）\u7684\u50cf\u7d20\u624d\u88ab\u8ba4\u4e3a\u662f\u7070\u50cf\u7d20\u5019\u9009；<\/li>\n

            • \u8272\u6e29\u8bfb\u53d6：\u5782\u8db3 \n

              p<\/p>\n

              P<\/p>\n

              l<\/p>\n

              a<\/p>\n

              n<\/p>\n

              c<\/p>\n

              k<\/p>\n

              p_{Planck}<\/p>\n

              <\/span><\/span>p<\/span><\/span>P<\/span>l<\/span>an<\/span>c<\/span>k<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> \u5bf9\u5e94\u7684\u9ed1\u4f53\u6e29\u5ea6 <\/p>\n

              T<\/p>\n

              (<\/p>\n

              p<\/p>\n

              )<\/p>\n

              T(p)<\/p>\n

              <\/span><\/span>T<\/span>(<\/span>p<\/span>)<\/span><\/span><\/span><\/span><\/span> \u5c31\u662f\u8be5\u50cf\u7d20\u7684 CCT\u3002<\/li>\n<\/li>\n<\/ul>\n

              5.2 \u6295\u5f71\u7684\u53cc\u91cd\u7b5b\u9009\u4f5c\u7528<\/h4>\n

              \u6295\u5f71\u628a\u4e8c\u7ef4\u8272\u5ea6\u4fe1\u606f\u964d\u7ef4\u4e3a\u4e00\u7ef4\u8272\u6e29\u6807\u91cf，\u540c\u65f6\u5b8c\u6210\u8d28\u91cf\u7b5b\u9009：<\/p>\n

              <\/p>\n

              p<\/p>\n

              u<\/p>\n

              v<\/p>\n

              \u2192<\/p>\n

              \u6700\u8fd1\u70b9\u6295\u5f71<\/p>\n

              (<\/p>\n

              p<\/p>\n

              P<\/p>\n

              l<\/p>\n

              a<\/p>\n

              n<\/p>\n

              c<\/p>\n

              k<\/p>\n

              ,<\/p>\n

              \u00a0<\/p>\n

              T<\/p>\n

              (<\/p>\n

              p<\/p>\n

              )<\/p>\n

              ,<\/p>\n

              \u00a0<\/p>\n

              d<\/p>\n

              )<\/p>\n

              p_{uv} \\\\xrightarrow{\\\\text{\u6700\u8fd1\u70b9\u6295\u5f71}} (p_{Planck},\\\\ T(p),\\\\ d)<\/p>\n

              <\/span><\/span>p<\/span><\/span>uv<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u6700\u8fd1\u70b9\u6295\u5f71<\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

              <\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>(<\/span>p<\/span><\/span>P<\/span>l<\/span>an<\/span>c<\/span>k<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>,<\/span>\u00a0<\/span><\/span>T<\/span>(<\/span>p<\/span>)<\/span>,<\/span>\u00a0<\/span><\/span>d<\/span>)<\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

                \n
              • \n

                d<\/p>\n

                d<\/p>\n

                <\/span><\/span>d<\/span><\/span><\/span><\/span><\/span> \u5927 \u2192 \u50cf\u7d20\u660e\u663e\u5e26\u8272（\u4e0d\u662f\u7070\u8868\u9762，\u6216\u4e0d\u662f\u9ed1\u4f53\u7c7b\u5149\u6e90）\u2192 \u4e22\u5f03；<\/li>\n

              • \n

                T<\/p>\n

                (<\/p>\n

                p<\/p>\n

                )<\/p>\n

                \u2209<\/p>\n

                [<\/p>\n

                2000<\/p>\n

                K<\/p>\n

                ,<\/p>\n

                20000<\/p>\n

                K<\/p>\n

                ]<\/p>\n

                T(p) \\\\notin [2000K, 20000K]<\/p>\n

                <\/span><\/span>T<\/span>(<\/span>p<\/span>)<\/span><\/span>\u2208<\/span><\/span><\/span>\/<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>[<\/span>2000<\/span>K<\/span>,<\/span><\/span>20000<\/span>K<\/span>]<\/span><\/span><\/span><\/span><\/span> \u2192 \u8d85\u51fa\u5e38\u89c1\u5149\u6e90\u8303\u56f4（\u53ef\u80fd\u662f\u566a\u58f0\/\u9971\u548c\u8272）\u2192 \u4e22\u5f03；<\/li>\n

              • \u901a\u8fc7\u7b5b\u9009\u7684\u50cf\u7d20 \u2192 \u53ea\u4fdd\u7559\u8272\u6e29\u6807\u91cf \n

                T<\/p>\n

                (<\/p>\n

                p<\/p>\n

                )<\/p>\n

                T(p)<\/p>\n

                <\/span><\/span>T<\/span>(<\/span>p<\/span>)<\/span><\/span><\/span><\/span><\/span> \u53c2\u4e0e\u6295\u7968\u3002<\/li>\n<\/ul>\n

                \u8fd9\u6b63\u662f"\u6295\u5f71"\u7684\u6838\u5fc3\u4ef7\u503c：\u7070\u8272\u8868\u9762\u5728\u672a\u77e5\u5149\u6e90\u4e0b\u7684\u8272\u5ea6\u672a\u77e5，\u4f46\u82e5\u5149\u6e90\u5728\u666e\u6717\u514b\u8f68\u8ff9\u4e0a，\u5219\u7070\u50cf\u7d20\u8272\u5ea6\u5fc5\u7136\u843d\u5728\u8f68\u8ff9\u9644\u8fd1；\u6295\u5f71\u628a"\u4f30\u8ba1\u4e8c\u7ef4\u5149\u6e90\u8272\u5ea6"\u5206\u89e3\u4e3a"\u7b5b\u9009（\u8ddd\u79bb）+ \u4e00\u7ef4\u6295\u7968（\u8272\u6e29）"，\u5927\u5e45\u7f29\u5c0f\u641c\u7d22\u7a7a\u95f4\u4e14\u5bf9\u79bb\u7fa4\u70b9\u9c81\u68d2\u3002<\/p>\n

                5.3 \u4e3a\u4ec0\u4e48\u80fd\u514b\u670d"\u591a\u7070\u8868\u9762"\u95ee\u9898<\/h4>\n

                \u8bbe\u573a\u666f\u4e2d\u6709\u4e24\u4e2a\u7070\u8272\u8868\u9762，\u5206\u522b\u5728\u5149\u6e90 <\/p>\n

                T<\/p>\n

                a<\/p>\n

                T_a<\/p>\n

                <\/span><\/span>T<\/span><\/span>a<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u3001<\/p>\n

                T<\/p>\n

                b<\/p>\n

                T_b<\/p>\n

                <\/span><\/span>T<\/span><\/span>b<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> \u4e0b\u6210\u50cf（\u4f8b\u5982\u5ba4\u5185\u9634\u5f71 + \u7a97\u5916\u65e5\u5149）：<\/p>\n

                  \n
                • \u5e73\u5747\u6cd5 [17]：\u8f93\u51fa\u8272\u5ea6 \u2248 \u8f68\u8ff9\u4e0a \n

                  T<\/p>\n

                  a<\/p>\n

                  T_a<\/p>\n

                  <\/span><\/span>T<\/span><\/span>a<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u3001<\/p>\n

                  T<\/p>\n

                  b<\/p>\n

                  T_b<\/p>\n

                  <\/span><\/span>T<\/span><\/span>b<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> \u5bf9\u5e94\u70b9\u7684\u8fde\u7ebf\u4e2d\u70b9\u2014\u2014\u901a\u5e38\u504f\u79bb\u8f68\u8ff9，\u65e2\u4e0d\u662f <\/p>\n

                  T<\/p>\n

                  a<\/p>\n

                  T_a<\/p>\n

                  <\/span><\/span>T<\/span><\/span>a<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> \u4e5f\u4e0d\u662f <\/p>\n

                  T<\/p>\n

                  b<\/p>\n

                  T_b<\/p>\n

                  <\/span><\/span>T<\/span><\/span>b<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>，\u6821\u6b63\u540e\u4e24\u8fb9\u90fd\u504f\u8272；<\/li>\n

                • \u6295\u7968\u6cd5：\u76f4\u65b9\u56fe\u5728 \n

                  T<\/p>\n

                  a<\/p>\n

                  M<\/p>\n

                  i<\/p>\n

                  r<\/p>\n

                  e<\/p>\n

                  d<\/p>\n

                  T_a^{Mired}<\/p>\n

                  <\/span><\/span>T<\/span><\/span>a<\/span><\/span><\/span><\/span>M<\/span>i<\/span>r<\/span>e<\/span>d<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> \u548c <\/p>\n

                  T<\/p>\n

                  b<\/p>\n

                  M<\/p>\n

                  i<\/p>\n

                  r<\/p>\n

                  e<\/p>\n

                  d<\/p>\n

                  T_b^{Mired}<\/p>\n

                  <\/span><\/span>T<\/span><\/span>b<\/span><\/span><\/span><\/span>M<\/span>i<\/span>r<\/span>e<\/span>d<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> \u5904\u5f62\u6210\u4e24\u4e2a\u5cf0，argmax \u9009\u51fa\u50cf\u7d20\u6570\u591a\/\u4eae\u5ea6\u9ad8\u7684\u4e3b\u5bfc\u5149\u6e90 <\/p>\n

                  T<\/p>\n

                  0<\/p>\n

                  T_0<\/p>\n

                  <\/span><\/span>T<\/span><\/span>0<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>，\u91cd\u5fc3\u8ba1\u7b97\u53c8\u9650\u5236\u5728 <\/p>\n

                  [<\/p>\n

                  T<\/p>\n

                  0<\/p>\n

                  \u2212<\/p>\n

                  \u03c3<\/p>\n

                  ,<\/p>\n

                  T<\/p>\n

                  0<\/p>\n

                  +<\/p>\n

                  \u03c3<\/p>\n

                  ]<\/p>\n

                  [T_0-\\\\sigma, T_0+\\\\sigma]<\/p>\n

                  <\/span><\/span>[<\/span>T<\/span><\/span>0<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u2212<\/span><\/span><\/span><\/span>\u03c3<\/span>,<\/span><\/span>T<\/span><\/span>0<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>+<\/span><\/span><\/span><\/span>\u03c3<\/span>]<\/span><\/span><\/span><\/span><\/span> \u90bb\u57df\u5185\u2014\u2014\u53ea\u5bf9\u4e3b\u5bfc\u5149\u6e90\u8d1f\u8d23，\u4e0d\u88ab\u6b21\u8981\u8868\u9762\u6c61\u67d3\u3002<\/li>\n<\/ul>\n

                  \n

                  6. MIRED \u8272\u6e29\u5c3a\u5ea6\u4e0e\u76f4\u65b9\u56fe\u63d2\u503c（\u91cd\u70b9）<\/h3>\n

                  6.1 \u4e3a\u4ec0\u4e48\u4e0d\u7528\u5f00\u5c14\u6587\u5c3a\u5ea6\u505a\u76f4\u65b9\u56fe<\/h4>\n

                  \u666e\u6717\u514b\u8f68\u8ff9\u4e0a\u7b49\u95f4\u8ddd\u7684\u5f00\u5c14\u6587\u91c7\u6837\u70b9，\u5728\u8272\u5ea6\u56fe\u4e0a\u7684\u7a7a\u95f4\u5206\u5e03\u6781\u4e0d\u5747\u5300：<\/p>\n

                    \n
                  • \u4f4e\u6e29\u7aef（2500K\u21924000K）：\u8f68\u8ff9\u79fb\u52a8\u5f88\u5feb，\u8272\u5ea6\u53d8\u5316\u5927；<\/li>\n
                  • \u9ad8\u6e29\u7aef（10000K\u219220000K）：\u8f68\u8ff9\u51e0\u4e4e\u4e0d\u52a8，\u8272\u5ea6\u6324\u5728\u4e00\u8d77\u3002<\/li>\n<\/ul>\n

                    \u82e5\u6309\u5f00\u5c14\u6587\u5206 bin，\u4f4e\u6e29\u7aef\u4e00\u4e2a bin \u8986\u76d6\u7684\u8272\u5ea6\u8303\u56f4\u8fc7\u5927，\u6295\u7968\u5206\u8fa8\u7387\u4e0d\u8db3；\u9ad8\u6e29\u7aef\u53c8\u5927\u91cf\u7a7a bin\u3002<\/p>\n

                    MIRED \u5c3a\u5ea6（Micro-Reciprocal Degree，Priest 1933 [22]）：<\/p>\n

                    <\/p>\n

                    T<\/p>\n

                    M<\/p>\n

                    i<\/p>\n

                    r<\/p>\n

                    e<\/p>\n

                    d<\/p>\n

                    =<\/p>\n

                    10<\/p>\n

                    6<\/p>\n

                    T<\/p>\n

                    T_{Mired} = \\\\frac{10^6}{T}<\/p>\n

                    <\/span><\/span>T<\/span><\/span>M<\/span>i<\/span>r<\/span>e<\/span>d<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>=<\/span><\/span><\/span><\/span><\/span><\/span>T<\/span><\/span><\/span><\/span><\/span><\/span><\/span>1<\/span>0<\/span><\/span>6<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

                      \n
                    • \u8272\u54c1\u968f \n

                      1<\/p>\n

                      \/<\/p>\n

                      T<\/p>\n

                      1\/T<\/p>\n

                      <\/span><\/span>1\/<\/span>T<\/span><\/span><\/span><\/span><\/span> \u8fd1\u4f3c\u7ebf\u6027\u53d8\u5316；<\/li>\n

                    • MIRED \u5747\u5300\u91c7\u6837 \u2248 \u666e\u6717\u514b\u8f68\u8ff9\u7684\u8fd1\u4f3c\u7b49\u5f27\u957f\u91c7\u6837，\u7b26\u5408\u4eba\u773c\u5bf9\u8272\u6e29\u5dee\u5f02\u7684\u611f\u77e5；<\/li>\n
                    • \u4f8b：2500K \u2192 400 Mired，4000K \u2192 250，6500K \u2192 154，10000K \u2192 100，20000K \u2192 50\u3002<\/li>\n<\/ul>\n

                      6.2 \u76f4\u65b9\u56fe\u7684\u6784\u5efa\u4e0e\u5e73\u6ed1（\u63d2\u503c\u73af\u8282）<\/h4>\n

                      \u76f4\u65b9\u56fe <\/p>\n

                      H<\/p>\n

                      H<\/p>\n

                      <\/span><\/span>H<\/span><\/span><\/span><\/span><\/span> \u5171 <\/p>\n

                      N<\/p>\n

                      =<\/p>\n

                      1000<\/p>\n

                      N = 1000<\/p>\n

                      <\/span><\/span>N<\/span><\/span>=<\/span><\/span><\/span><\/span>1000<\/span><\/span><\/span><\/span><\/span> \u4e2a bin，\u8986\u76d6 50~400 Mired（\u5373 2500K~20000K）：<\/p>\n

                    • \u6295\u7968\u7d2f\u79ef：\u6bcf\u4e2a\u901a\u8fc7\u7b5b\u9009\u7684\u50cf\u7d20 \n

                      p<\/p>\n

                      p<\/p>\n

                      <\/span><\/span>p<\/span><\/span><\/span><\/span><\/span>，\u628a\u6743\u91cd <\/p>\n

                      w<\/p>\n

                      (<\/p>\n

                      p<\/p>\n

                      )<\/p>\n

                      =<\/p>\n

                      luminance<\/p>\n

                      (<\/p>\n

                      p<\/p>\n

                      )<\/p>\n

                      n<\/p>\n

                      w(p) = \\\\text{luminance}(p)^n<\/p>\n

                      <\/span><\/span>w<\/span>(<\/span>p<\/span>)<\/span><\/span>=<\/span><\/span><\/span><\/span>luminance<\/span><\/span>(<\/span>p<\/span>)<\/span><\/span>n<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> \u52a0\u5230 bin <\/p>\n

                      \u230a<\/p>\n

                      T<\/p>\n

                      M<\/p>\n

                      i<\/p>\n

                      r<\/p>\n

                      e<\/p>\n

                      d<\/p>\n

                      (<\/p>\n

                      p<\/p>\n

                      )<\/p>\n

                      \u230b<\/p>\n

                      \\\\lfloor T_{Mired}(p) \\\\rfloor<\/p>\n

                      <\/span><\/span>\u230a<\/span>T<\/span><\/span>M<\/span>i<\/span>r<\/span>e<\/span>d<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>(<\/span>p<\/span>)\u230b<\/span><\/span><\/span><\/span><\/span> \u4e0a；<\/li>\n

                    • \u9ad8\u65af\u5e73\u6ed1：\u7528\u6807\u51c6\u5dee \n

                      \u03c3<\/p>\n

                      =<\/p>\n

                      2<\/p>\n

                      \\\\sigma = 2<\/p>\n

                      <\/span><\/span>\u03c3<\/span><\/span>=<\/span><\/span><\/span><\/span>2<\/span><\/span><\/span><\/span><\/span>（Mired \u5355\u4f4d）\u7684\u5f52\u4e00\u5316\u9ad8\u65af\u6838\u6ee4\u6ce2\u76f4\u65b9\u56fe：<\/li>\n

                      <\/p>\n

                      H<\/p>\n

                      s<\/p>\n

                      m<\/p>\n

                      o<\/p>\n

                      o<\/p>\n

                      t<\/p>\n

                      h<\/p>\n

                      (<\/p>\n

                      T<\/p>\n

                      )<\/p>\n

                      =<\/p>\n

                      \u2211<\/p>\n

                      T<\/p>\n

                      \u2032<\/p>\n

                      H<\/p>\n

                      (<\/p>\n

                      T<\/p>\n

                      \u2032<\/p>\n

                      )
                      \n \u2009<\/p>\n

                      G<\/p>\n

                      \u03c3<\/p>\n

                      (<\/p>\n

                      T<\/p>\n

                      \u2212<\/p>\n

                      T<\/p>\n

                      \u2032<\/p>\n

                      )<\/p>\n

                      H_{smooth}(T) = \\\\sum_{T'} H(T')\\\\, \\\\mathcal{G}_\\\\sigma(T – T')<\/p>\n

                      <\/span><\/span>H<\/span><\/span>s<\/span>m<\/span>oo<\/span>t<\/span>h<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>(<\/span>T<\/span>)<\/span><\/span>=<\/span><\/span><\/span><\/span><\/span>T<\/span><\/span>\u2032<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u2211<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>H<\/span>(<\/span>T<\/span><\/span>\u2032<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>)<\/span><\/span>G<\/span><\/span>\u03c3<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>(<\/span>T<\/span><\/span>\u2212<\/span><\/span><\/span><\/span>T<\/span><\/span>\u2032<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>)<\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

                      \u8fd9\u4e00\u6b65\u672c\u8d28\u4e0a\u662f\u6838\u5bc6\u5ea6\u4f30\u8ba1（KDE）\u5f0f\u7684\u8fde\u7eed\u5316\u63d2\u503c：\u79bb\u6563 bin \u4e0a\u7684\u6295\u7968\u88ab\u9ad8\u65af\u6838\u6269\u6563\u6210\u8fde\u7eed\u7684\u6e29\u5ea6\u5206\u5e03，\u4f5c\u7528\u6709\u4e09：<\/p>\n

                        \n
                      • \u628a\u76f8\u90bb bin \u7684\u5b64\u7acb\u7968"\u6865\u63a5"\u8d77\u6765，\u6d88\u9664\u91cf\u5316\u566a\u58f0；<\/li>\n
                      • \u4f7f\u5cf0\u503c\u9644\u8fd1\u5f62\u6210\u5e73\u6ed1\u7684\u5355\u5cf0，argmax \u7a33\u5b9a；<\/li>\n
                      • \n

                        \u03c3<\/p>\n

                        \\\\sigma<\/p>\n

                        <\/span><\/span>\u03c3<\/span><\/span><\/span><\/span><\/span> \u540c\u65f6\u5b9a\u4e49\u4e86\u540e\u7eed"\u6295\u7968\u7ed9 <\/p>\n

                        T<\/p>\n

                        0<\/p>\n

                        T_0<\/p>\n

                        <\/span><\/span>T<\/span><\/span>0<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>"\u7684\u90bb\u57df <\/p>\n

                        [<\/p>\n

                        T<\/p>\n

                        0<\/p>\n

                        \u2212<\/p>\n

                        \u03c3<\/p>\n

                        ,<\/p>\n

                        T<\/p>\n

                        0<\/p>\n

                        +<\/p>\n

                        \u03c3<\/p>\n

                        ]<\/p>\n

                        [T_0 – \\\\sigma, T_0 + \\\\sigma]<\/p>\n

                        <\/span><\/span>[<\/span>T<\/span><\/span>0<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u2212<\/span><\/span><\/span><\/span>\u03c3<\/span>,<\/span><\/span>T<\/span><\/span>0<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>+<\/span><\/span><\/span><\/span>\u03c3<\/span>]<\/span><\/span><\/span><\/span><\/span>（Mired \u57df \u00b12，\u5bf9\u5e94 6500K \u5904\u7ea6 \u00b1470K \u7684\u5bb9\u5dee）\u3002<\/li>\n<\/ul>\n

                      • \u53d6\u5cf0：\n

                        T<\/p>\n

                        0<\/p>\n

                        =<\/p>\n

                        arg<\/p>\n

                        \u2061<\/p>\n

                        max<\/p>\n

                        \u2061<\/p>\n

                        T<\/p>\n

                        H<\/p>\n

                        s<\/p>\n

                        m<\/p>\n

                        o<\/p>\n

                        o<\/p>\n

                        t<\/p>\n

                        h<\/p>\n

                        (<\/p>\n

                        T<\/p>\n

                        )<\/p>\n

                        T_0 = \\\\arg\\\\max_T H_{smooth}(T)<\/p>\n

                        <\/span><\/span>T<\/span><\/span>0<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>=<\/span><\/span><\/span><\/span>arg<\/span><\/span><\/span>max<\/span><\/span>T<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>H<\/span><\/span>s<\/span>m<\/span>oo<\/span>t<\/span>h<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>(<\/span>T<\/span>)<\/span><\/span><\/span><\/span><\/span>；<\/li>\n

                      • \u6700\u7ec8\u5149\u6e90：\u5bf9 \n

                        T<\/p>\n

                        M<\/p>\n

                        i<\/p>\n

                        r<\/p>\n

                        e<\/p>\n

                        d<\/p>\n

                        (<\/p>\n

                        p<\/p>\n

                        )<\/p>\n

                        \u2208<\/p>\n

                        [<\/p>\n

                        T<\/p>\n

                        0<\/p>\n

                        \u2212<\/p>\n

                        \u03c3<\/p>\n

                        ,<\/p>\n

                        T<\/p>\n

                        0<\/p>\n

                        +<\/p>\n

                        \u03c3<\/p>\n

                        ]<\/p>\n

                        T_{Mired}(p) \\\\in [T_0-\\\\sigma, T_0+\\\\sigma]<\/p>\n

                        <\/span><\/span>T<\/span><\/span>M<\/span>i<\/span>r<\/span>e<\/span>d<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>(<\/span>p<\/span>)<\/span><\/span>\u2208<\/span><\/span><\/span><\/span>[<\/span>T<\/span><\/span>0<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u2212<\/span><\/span><\/span><\/span>\u03c3<\/span>,<\/span><\/span>T<\/span><\/span>0<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>+<\/span><\/span><\/span><\/span>\u03c3<\/span>]<\/span><\/span><\/span><\/span><\/span> \u7684\u6240\u6709\u50cf\u7d20，\u6309 <\/p>\n

                        w<\/p>\n

                        (<\/p>\n

                        p<\/p>\n

                        )<\/p>\n

                        w(p)<\/p>\n

                        <\/span><\/span>w<\/span>(<\/span>p<\/span>)<\/span><\/span><\/span><\/span><\/span> \u52a0\u6743\u6c42 uv \u8272\u5ea6\u91cd\u5fc3：<\/li>\n

                        <\/p>\n

                        (<\/p>\n

                        u<\/p>\n

                        0<\/p>\n

                        ,<\/p>\n

                        v<\/p>\n

                        0<\/p>\n

                        )<\/p>\n

                        =<\/p>\n

                        \u2211<\/p>\n

                        p<\/p>\n

                        \u2208<\/p>\n

                        L<\/p>\n

                        w<\/p>\n

                        (<\/p>\n

                        p<\/p>\n

                        )
                        \n \u2009<\/p>\n

                        p<\/p>\n

                        u<\/p>\n

                        v<\/p>\n

                        \u2211<\/p>\n

                        p<\/p>\n

                        \u2208<\/p>\n

                        L<\/p>\n

                        w<\/p>\n

                        (<\/p>\n

                        p<\/p>\n

                        )<\/p>\n

                        (u_0, v_0) = \\\\frac{\\\\sum_{p \\\\in L} w(p)\\\\, p_{uv}}{\\\\sum_{p \\\\in L} w(p)}<\/p>\n

                        <\/span><\/span>(<\/span>u<\/span><\/span>0<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>,<\/span><\/span>v<\/span><\/span>0<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>)<\/span><\/span>=<\/span><\/span><\/span><\/span><\/span><\/span>\u2211<\/span><\/span>p<\/span>\u2208<\/span>L<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>w<\/span>(<\/span>p<\/span>)<\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u2211<\/span><\/span>p<\/span>\u2208<\/span>L<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>w<\/span>(<\/span>p<\/span>)<\/span><\/span>p<\/span><\/span>uv<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

                        \u6ce8\u610f：\u6700\u7ec8\u5149\u6e90\u8272\u5ea6\u4e0d\u662f\u76f4\u63a5\u53d6\u8f68\u8ff9\u4e0a\u7684\u70b9，\u800c\u662f\u6295\u7968\u50cf\u7d20\u539f\u59cb\u8272\u5ea6\u7684\u91cd\u5fc3\u2014\u2014\u4fdd\u7559\u4e86\u8f68\u8ff9\u6cd5\u5411\u7684\u771f\u5b9e\u504f\u79fb\u4fe1\u606f，\u6bd4\u6295\u5f71\u70b9\u66f4\u51c6\u786e\u3002<\/p>\n

                        6.3 \u7a7a\u76f4\u65b9\u56fe\u56de\u9000<\/h4>\n

                        \u82e5\u6ca1\u6709\u4efb\u4f55\u50cf\u7d20\u901a\u8fc7\u7b5b\u9009（<\/p>\n

                        H<\/p>\n

                        =<\/p>\n

                        \u2205<\/p>\n

                        H = \\\\emptyset<\/p>\n

                        <\/span><\/span>H<\/span><\/span>=<\/span><\/span><\/span><\/span>\u2205<\/span><\/span><\/span><\/span><\/span>，\u5982\u6781\u7aef\u573a\u666f），\u8fd4\u56de\u6807\u51c6\u5149\u6e90 <\/p>\n

                        (<\/p>\n

                        u<\/p>\n

                        r<\/p>\n

                        e<\/p>\n

                        f<\/p>\n

                        ,<\/p>\n

                        v<\/p>\n

                        r<\/p>\n

                        e<\/p>\n

                        f<\/p>\n

                        )<\/p>\n

                        (u_{ref}, v_{ref})<\/p>\n

                        <\/span><\/span>(<\/span>u<\/span><\/span>r<\/span>e<\/span>f<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>,<\/span><\/span>v<\/span><\/span>r<\/span>e<\/span>f<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>)<\/span><\/span><\/span><\/span><\/span>（canonical illuminant），\u4fdd\u8bc1\u7b97\u6cd5\u603b\u6709\u8f93\u51fa\u3002<\/p>\n

                        \n

                        7. Algorithm 1 \u5b8c\u6574\u6d41\u7a0b\u9010\u884c\u89e3\u8bfb<\/h3>\n

                        \u8f93\u5165：sRGB \u56fe\u50cf <\/p>\n

                        p<\/p>\n

                        p<\/p>\n

                        <\/span><\/span>p<\/span><\/span><\/span><\/span><\/span>，\u8ddd\u79bb\u9608\u503c <\/p>\n

                        \u03b4<\/p>\n

                        \\\\delta<\/p>\n

                        <\/span><\/span>\u03b4<\/span><\/span><\/span><\/span><\/span>，bin \u6570 <\/p>\n

                        N<\/p>\n

                        N<\/p>\n

                        <\/span><\/span>N<\/span><\/span><\/span><\/span><\/span>，\u9ad8\u65af\u6807\u51c6\u5dee <\/p>\n

                        \u03c3<\/p>\n

                        \\\\sigma<\/p>\n

                        <\/span><\/span>\u03c3<\/span><\/span><\/span><\/span><\/span>，\u4eae\u5ea6\u5e42\u6b21 <\/p>\n

                        n<\/p>\n

                        n<\/p>\n

                        <\/span><\/span>n<\/span><\/span><\/span><\/span><\/span>，\u6807\u51c6\u5149\u6e90 <\/p>\n

                        (<\/p>\n

                        u<\/p>\n

                        r<\/p>\n

                        e<\/p>\n

                        f<\/p>\n

                        ,<\/p>\n

                        v<\/p>\n

                        r<\/p>\n

                        e<\/p>\n

                        f<\/p>\n

                        )<\/p>\n

                        (u_{ref}, v_{ref})<\/p>\n

                        <\/span><\/span>(<\/span>u<\/span><\/span>r<\/span>e<\/span>f<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>,<\/span><\/span>v<\/span><\/span>r<\/span>e<\/span>f<\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>)<\/span><\/span><\/span><\/span><\/span> \u8f93\u51fa：CIE uv \u5149\u6e90\u8272\u5ea6 <\/p>\n

                        (<\/p>\n

                        u<\/p>\n

                        0<\/p>\n

                        ,<\/p>\n

                        v<\/p>\n

                        0<\/p>\n

                        )<\/p>\n

                        (u_0, v_0)<\/p>\n

                        <\/span><\/span>(<\/span>u<\/span><\/span>0<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>,<\/span><\/span>v<\/span><\/span>0<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>)<\/span><\/span><\/span><\/span><\/span> \u5b9e\u9a8c\u53c2\u6570：<\/p>\n

                        \u03b4<\/p>\n

                        =<\/p>\n

                        0.01<\/p>\n

                        \\\\delta = 0.01<\/p>\n

                        <\/span><\/span>\u03b4<\/span><\/span>=<\/span><\/span><\/span><\/span>0.01<\/span><\/span><\/span><\/span><\/span>，<\/p>\n

                        N<\/p>\n

                        =<\/p>\n

                        1000<\/p>\n

                        N = 1000<\/p>\n

                        <\/span><\/span>N<\/span><\/span>=<\/span><\/span><\/span><\/span>1000<\/span><\/span><\/span><\/span><\/span>，<\/p>\n

                        \u03c3<\/p>\n

                        =<\/p>\n

                        2<\/p>\n

                        \\\\sigma = 2<\/p>\n

                        <\/span><\/span>\u03c3<\/span><\/span>=<\/span><\/span><\/span><\/span>2<\/span><\/span><\/span><\/span><\/span>，<\/p>\n

                        n<\/p>\n

                        =<\/p>\n

                        3<\/p>\n

                        n = 3<\/p>\n

                        <\/span><\/span>n<\/span><\/span>=<\/span><\/span><\/span><\/span>3<\/span><\/span><\/span><\/span><\/span><\/p>\n

                        \u521d\u59cb\u5316\u76f4\u65b9\u56fe H = 0（N \u4e2a bin）<\/p>\n

                        foreach \u50cf\u7d20 p do
                        \n \u2460 p_uv \u2190 Convert_sRGB\u2192uv(p) # \u8f6c\u5230 CIE 1960 uv \u8272\u5ea6
                        \n \u2461 [p_Planck, T(p)] \u2190 Proj_Planck(p_uv) # \u6295\u5f71\u5230\u666e\u6717\u514b\u8f68\u8ff9\u6700\u8fd1\u70b9
                        \n # T(p) = \u5782\u8db3\u7684\u9ed1\u4f53\u6e29\u5ea6（K）
                        \n \u2462 d \u2190 distance(p_uv, p_Planck) # \u5230\u8f68\u8ff9\u7684\u8ddd\u79bb = "\u7070\u5ea6\u53ef\u4fe1\u5ea6"
                        \n if d < \u03b4 and 2000K \u2264 T(p) \u2264 20000K then # \u53cc\u91cd\u7b5b\u9009：\u591f\u8fd1 + \u8272\u6e29\u5408\u7406
                        \n \u2463 T_MIRED(p) \u2190 10\u2076 \/ T(p) # \u5f00\u5c14\u6587 \u2192 MIRED \u5c3a\u5ea6
                        \n \u2464 weight(p) \u2190 luminance(p)\u207f # \u4eae\u5ea6\u52a0\u6743（GW\/WP \u6298\u4e2d）
                        \n \u2465 H[T_MIRED(p)] += weight(p) # \u6295\u7968\u7d2f\u79ef
                        \n end
                        \nend<\/p>\n

                        if H == \u2205 then
                        \n return (u\u2080, v\u2080) = (u_ref, v_ref) # \u56de\u9000：\u6807\u51c6\u5149\u6e90
                        \nend<\/p>\n

                        \u2466 \u7528\u6807\u51c6\u5dee \u03c3 \u7684\u5f52\u4e00\u5316\u9ad8\u65af\u6838\u5e73\u6ed1 H # \u8fde\u7eed\u5316\/\u63d2\u503c
                        \n\u2467 T\u2080 \u2190 argmax(H) # \u4e3b\u5bfc\u8272\u6e29（\u6295\u7968\u80dc\u51fa\u8005）
                        \n\u2468 L \u2190 { p : T_MIRED(p) \u2208 [T\u2080\u2212\u03c3, T\u2080+\u03c3] } # \u80dc\u51fa\u6e29\u5ea6\u90bb\u57df\u5185\u7684\u50cf\u7d20\u96c6\u5408
                        \n\u2469 (u\u2080, v\u2080) \u2190 Barycenter(L, weight(L)) # \u52a0\u6743\u91cd\u5fc3 = \u6700\u7ec8\u5149\u6e90<\/p>\n

                        return (u\u2080, v\u2080)<\/p>\n

                        \u8981\u70b9\u603b\u7ed3<\/h4>\n\n\u6b65\u9aa4\u673a\u5236\u4f5c\u7528<\/tr>\n\n\n\n\n\n\n\n
                        \u2460\u2461<\/td>\nsRGB\u2192uv + \u8f68\u8ff9\u6700\u8fd1\u70b9\u6295\u5f71<\/td>\n2D \u8272\u5ea6\u964d\u4e3a 1D \u8272\u6e29 + \u7070\u5ea6\u53ef\u4fe1\u5ea6<\/td>\n<\/tr>\n
                        \u2462<\/td>\n<\/p>\n

                        d<\/p>\n

                        <<\/p>\n

                        \u03b4<\/p>\n

                        d < \\\\delta<\/p>\n

                        <\/span><\/span>d<\/span><\/span><<\/span><\/span><\/span><\/span>\u03b4<\/span><\/span><\/span><\/span><\/span> \u4e14 <\/p>\n

                        T<\/p>\n

                        \u2208<\/p>\n

                        [<\/p>\n

                        2000<\/p>\n

                        K<\/p>\n

                        ,<\/p>\n

                        20000<\/p>\n

                        K<\/p>\n

                        ]<\/p>\n

                        T \\\\in [2000K, 20000K]<\/p>\n

                        <\/span><\/span>T<\/span><\/span>\u2208<\/span><\/span><\/span><\/span>[<\/span>2000<\/span>K<\/span>,<\/span><\/span>20000<\/span>K<\/span>]<\/span><\/span><\/span><\/span><\/span><\/td>\n

                        		\u53ea\u4fdd\u7559"\u50cf\u7070\u50cf\u7d20\u4e14\u8272\u6e29\u7269\u7406\u5408\u7406"\u7684\u5019\u9009<\/td>\n<\/tr>\n
                        \u2463<\/td>\nMIRED \u5c3a\u5ea6<\/td>\n\u5747\u5300\u91c7\u6837\u666e\u6717\u514b\u8f68\u8ff9，\u7b26\u5408\u611f\u77e5<\/td>\n<\/tr>\n
                        \u2464<\/td>\n\u4eae\u5ea6 <\/p>\n

                        n<\/p>\n

                        n<\/p>\n

                        <\/span><\/span>n<\/span><\/span><\/span><\/span><\/span> \u6b21\u5e42\u52a0\u6743<\/td>\n

                        		\u6291\u5236\u6697\u50cf\u7d20\u566a\u58f0，GW\/WP \u6298\u4e2d<\/td>\n<\/tr>\n
                        \u2466<\/td>\n\u9ad8\u65af\u6838\u5e73\u6ed1<\/td>\n\u79bb\u6563\u6295\u7968\u8fde\u7eed\u5316，\u5cf0\u503c\u7a33\u5b9a<\/td>\n<\/tr>\n
                        \u2467\u2468\u2469<\/td>\n\u5cf0\u503c\u9009\u62e9 + \u90bb\u57df\u91cd\u5fc3<\/td>\n\u514b\u670d\u591a\u7070\u8868\u9762\u6b67\u4e49；\u91cd\u5fc3\u4fdd\u7559\u6cd5\u5411\u4fe1\u606f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
                        \n

                        8. \u7b97\u6cd5\u6d41\u7a0b\u56fe<\/h3>\n

                        #mermaid-svg-kXo1jEzbcKByzzr6{font-family:\\”trebuchet ms\\”,verdana,arial,sans-serif;font-size:16px;fill:#333;}@keyframes edge-animation-frame{from{stroke-dashoffset:0;}}@keyframes dash{to{stroke-dashoffset:0;}}#mermaid-svg-kXo1jEzbcKByzzr6 .edge-animation-slow{stroke-dasharray:9,5!important;stroke-dashoffset:900;animation:dash 50s linear infinite;stroke-linecap:round;}#mermaid-svg-kXo1jEzbcKByzzr6 .edge-animation-fast{stroke-dasharray:9,5!important;stroke-dashoffset:900;animation:dash 20s linear infinite;stroke-linecap:round;}#mermaid-svg-kXo1jEzbcKByzzr6 .error-icon{fill:#552222;}#mermaid-svg-kXo1jEzbcKByzzr6 .error-text{fill:#552222;stroke:#552222;}#mermaid-svg-kXo1jEzbcKByzzr6 .edge-thickness-normal{stroke-width:1px;}#mermaid-svg-kXo1jEzbcKByzzr6 .edge-thickness-thick{stroke-width:3.5px;}#mermaid-svg-kXo1jEzbcKByzzr6 .edge-pattern-solid{stroke-dasharray:0;}#mermaid-svg-kXo1jEzbcKByzzr6 .edge-thickness-invisible{stroke-width:0;fill:none;}#mermaid-svg-kXo1jEzbcKByzzr6 .edge-pattern-dashed{stroke-dasharray:3;}#mermaid-svg-kXo1jEzbcKByzzr6 .edge-pattern-dotted{stroke-dasharray:2;}#mermaid-svg-kXo1jEzbcKByzzr6 .marker{fill:#333333;stroke:#333333;}#mermaid-svg-kXo1jEzbcKByzzr6 .marker.cross{stroke:#333333;}#mermaid-svg-kXo1jEzbcKByzzr6 svg{font-family:\\”trebuchet ms\\”,verdana,arial,sans-serif;font-size:16px;}#mermaid-svg-kXo1jEzbcKByzzr6 p{margin:0;}#mermaid-svg-kXo1jEzbcKByzzr6 .label{font-family:\\”trebuchet ms\\”,verdana,arial,sans-serif;color:#333;}#mermaid-svg-kXo1jEzbcKByzzr6 .cluster-label text{fill:#333;}#mermaid-svg-kXo1jEzbcKByzzr6 .cluster-label span{color:#333;}#mermaid-svg-kXo1jEzbcKByzzr6 .cluster-label span p{background-color:transparent;}#mermaid-svg-kXo1jEzbcKByzzr6 .label text,#mermaid-svg-kXo1jEzbcKByzzr6 span{fill:#333;color:#333;}#mermaid-svg-kXo1jEzbcKByzzr6 .node rect,#mermaid-svg-kXo1jEzbcKByzzr6 .node circle,#mermaid-svg-kXo1jEzbcKByzzr6 .node ellipse,#mermaid-svg-kXo1jEzbcKByzzr6 .node polygon,#mermaid-svg-kXo1jEzbcKByzzr6 .node path{fill:#ECECFF;stroke:#9370DB;stroke-width:1px;}#mermaid-svg-kXo1jEzbcKByzzr6 .rough-node .label text,#mermaid-svg-kXo1jEzbcKByzzr6 .node .label text,#mermaid-svg-kXo1jEzbcKByzzr6 .image-shape .label,#mermaid-svg-kXo1jEzbcKByzzr6 .icon-shape .label{text-anchor:middle;}#mermaid-svg-kXo1jEzbcKByzzr6 .node .katex path{fill:#000;stroke:#000;stroke-width:1px;}#mermaid-svg-kXo1jEzbcKByzzr6 .rough-node .label,#mermaid-svg-kXo1jEzbcKByzzr6 .node .label,#mermaid-svg-kXo1jEzbcKByzzr6 .image-shape .label,#mermaid-svg-kXo1jEzbcKByzzr6 .icon-shape .label{text-align:center;}#mermaid-svg-kXo1jEzbcKByzzr6 .node.clickable{cursor:pointer;}#mermaid-svg-kXo1jEzbcKByzzr6 .root .anchor path{fill:#333333!important;stroke-width:0;stroke:#333333;}#mermaid-svg-kXo1jEzbcKByzzr6 .arrowheadPath{fill:#333333;}#mermaid-svg-kXo1jEzbcKByzzr6 .edgePath .path{stroke:#333333;stroke-width:2.0px;}#mermaid-svg-kXo1jEzbcKByzzr6 .flowchart-link{stroke:#333333;fill:none;}#mermaid-svg-kXo1jEzbcKByzzr6 .edgeLabel{background-color:rgba(232,232,232, 0.8);text-align:center;}#mermaid-svg-kXo1jEzbcKByzzr6 .edgeLabel p{background-color:rgba(232,232,232, 0.8);}#mermaid-svg-kXo1jEzbcKByzzr6 .edgeLabel rect{opacity:0.5;background-color:rgba(232,232,232, 0.8);fill:rgba(232,232,232, 0.8);}#mermaid-svg-kXo1jEzbcKByzzr6 .labelBkg{background-color:rgba(232, 232, 232, 0.5);}#mermaid-svg-kXo1jEzbcKByzzr6 .cluster rect{fill:#ffffde;stroke:#aaaa33;stroke-width:1px;}#mermaid-svg-kXo1jEzbcKByzzr6 .cluster text{fill:#333;}#mermaid-svg-kXo1jEzbcKByzzr6 .cluster span{color:#333;}#mermaid-svg-kXo1jEzbcKByzzr6 div.mermaidTooltip{position:absolute;text-align:center;max-width:200px;padding:2px;font-family:\\”trebuchet ms\\”,verdana,arial,sans-serif;font-size:12px;background:hsl(80, 100%, 96.2745098039%);border:1px solid #aaaa33;border-radius:2px;pointer-events:none;z-index:100;}#mermaid-svg-kXo1jEzbcKByzzr6 .flowchartTitleText{text-anchor:middle;font-size:18px;fill:#333;}#mermaid-svg-kXo1jEzbcKByzzr6 rect.text{fill:none;stroke-width:0;}#mermaid-svg-kXo1jEzbcKByzzr6 .icon-shape,#mermaid-svg-kXo1jEzbcKByzzr6 .image-shape{background-color:rgba(232,232,232, 0.8);text-align:center;}#mermaid-svg-kXo1jEzbcKByzzr6 .icon-shape p,#mermaid-svg-kXo1jEzbcKByzzr6 .image-shape p{background-color:rgba(232,232,232, 0.8);padding:2px;}#mermaid-svg-kXo1jEzbcKByzzr6 .icon-shape .label rect,#mermaid-svg-kXo1jEzbcKByzzr6 .image-shape .label rect{opacity:0.5;background-color:rgba(232,232,232, 0.8);fill:rgba(232,232,232, 0.8);}#mermaid-svg-kXo1jEzbcKByzzr6 .label-icon{display:inline-block;height:1em;overflow:visible;vertical-align:-0.125em;}#mermaid-svg-kXo1jEzbcKByzzr6 .node .label-icon path{fill:currentColor;stroke:revert;stroke-width:revert;}#mermaid-svg-kXo1jEzbcKByzzr6 :root{–mermaid-font-family:\\”trebuchet ms\\”,verdana,arial,sans-serif;}<\/p>\n

                        <\/span><\/p>\n

                        <\/span><\/p>\n

                        <\/span><\/p>\n

                        <\/span><\/p>\n

                        <\/span><\/p>\n

                        <\/p>\n

                        \u5426<\/p>\n

                        <\/span><\/p>\n

                        <\/p>\n

                        \u662f<\/p>\n

                        <\/span><\/p>\n

                        <\/span><\/p>\n

                        <\/span><\/p>\n

                        <\/p>\n

                        \u662f<\/p>\n

                        <\/span><\/p>\n

                        <\/p>\n

                        \u5426<\/p>\n

                        <\/span><\/p>\n

                        <\/span><\/p>\n

                        <\/span><\/p>\n

                        <\/span><\/p>\n

                        <\/span><\/p>\n

                        <\/p>\n

                        \u8f93\u5165: sRGB \u56fe\u50cf p\u03b4=0.01, N=1000, \u03c3=2, n=3<\/p>\n

                        <\/span><\/p>\n

                        <\/p>\n

                        \u904d\u5386\u6bcf\u4e2a\u50cf\u7d20<\/p>\n

                        <\/span><\/p>\n

                        <\/p>\n

                        \u2460 sRGB \u2192 CIE 1960 uv<\/p>\n

                        <\/span><\/p>\n

                        <\/p>\n

                        \u2461 \u6295\u5f71\u5230\u666e\u6717\u514b\u8f68\u8ff9\u6700\u8fd1\u70b9\u5f97\u5782\u8db3 p_Planck \u4e0e\u8272\u6e29 T(p)<\/p>\n

                        <\/span><\/p>\n

                        <\/p>\n

                        \u2462 d = \u2016p_uv \u2212 p_Planck\u2016<\/p>\n

                        <\/span><\/p>\n

                        <\/p>\n

                        d < 0.01 \u4e142000K \u2264 T \u2264 20000K ?<\/p>\n

                        <\/span><\/p>\n

                        <\/p>\n

                        \u2463 T_MIRED = 10\u2076\/T\u2464 w = luminance\u207f\u2465 H[T_MIRED] += w<\/p>\n

                        <\/span><\/p>\n

                        <\/p>\n

                        \u76f4\u65b9\u56fe H \u4e3a\u7a7a?<\/p>\n

                        <\/span><\/p>\n

                        <\/p>\n

                        \u8fd4\u56de\u6807\u51c6\u5149\u6e90 (u_ref, v_ref)<\/p>\n

                        <\/span><\/p>\n

                        <\/p>\n

                        \u2466 \u9ad8\u65af\u6838(\u03c3=2)\u5e73\u6ed1 H<\/p>\n

                        <\/span><\/p>\n

                        <\/p>\n

                        \u2467 T\u2080 = argmax H（\u4e3b\u5bfc\u8272\u6e29\u80dc\u51fa）<\/p>\n

                        <\/span><\/p>\n

                        <\/p>\n

                        \u2468 \u6536\u96c6 T_MIRED \u2208 [T\u2080\u2212\u03c3, T\u2080+\u03c3] \u7684\u50cf\u7d20\u96c6 L<\/p>\n

                        <\/span><\/p>\n

                        <\/p>\n

                        \u2469 (u\u2080,v\u2080) = L \u7684\u4eae\u5ea6\u52a0\u6743\u91cd\u5fc3<\/p>\n

                        <\/span><\/p>\n

                        <\/p>\n

                        \u8f93\u51fa\u5149\u6e90 (u\u2080, v\u2080)<\/p>\n

                        <\/span><\/p>\n

                        \n

                        9. \u5b9e\u9a8c\u8bc4\u4f30<\/h3>\n

                        9.1 \u6570\u636e\u5e93\u4e0e\u534f\u8bae<\/h4>\n\n\u6570\u636e\u5e93\u89c4\u6a21\u5904\u7406<\/tr>\n\n\n\n
                        Gehler \/ ColorChecker [12][24]<\/td>\n568 \u5f20<\/td>\n\u4ec5\u7528 RAW \u7248\u672c（\u907f\u514d\u76f8\u673a\u81ea\u52a8 ISP \u7684\u975e\u7ebf\u6027\u7834\u574f）；\u5206\u522b\u5728\u76f8\u673a\u8272\u5f69\u7a7a\u95f4\u548c sRGB \u7a7a\u95f4\u8bc4\u4f30<\/td>\n<\/tr>\n
                        SFU grey-ball [23]<\/td>\n11,346 \u5f20<\/td>\n\u7ebf\u6027\u5316\u5904\u7406\u540e\u8bc4\u4f30<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                        \u8bef\u5dee\u5ea6\u91cf：\u4f30\u8ba1\u5149\u6e90 <\/p>\n

                        I<\/p>\n

                        e<\/p>\n

                        I_e<\/p>\n

                        <\/span><\/span>I<\/span><\/span>e<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> \u4e0e\u771f\u503c <\/p>\n

                        I<\/p>\n

                        g<\/p>\n

                        I_g<\/p>\n

                        <\/span><\/span>I<\/span><\/span>g<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> \u5404\u5b9a\u4e49\u4e00\u6761"\u7070\u8272\u8f74"，\u7528\u4e24\u8f74\u5939\u89d2\u8861\u91cf：<\/p>\n

                        <\/p>\n

                        E<\/p>\n

                        a<\/p>\n

                        (<\/p>\n

                        I<\/p>\n

                        e<\/p>\n

                        ,<\/p>\n

                        I<\/p>\n

                        g<\/p>\n

                        )<\/p>\n

                        =<\/p>\n

                        cos<\/p>\n

                        \u2061<\/p>\n

                        \u2212<\/p>\n

                        1<\/p>\n

                        \u2009\u2063<\/p>\n

                        (<\/p>\n

                        I<\/p>\n

                        e<\/p>\n

                        \u22c5<\/p>\n

                        I<\/p>\n

                        g<\/p>\n

                        \u2225<\/p>\n

                        I<\/p>\n

                        e<\/p>\n

                        \u2225
                        \n \u2009<\/p>\n

                        \u2225<\/p>\n

                        I<\/p>\n

                        g<\/p>\n

                        \u2225<\/p>\n

                        )<\/p>\n

                        E_a(I_e, I_g) = \\\\cos^{-1}\\\\!\\\\left( \\\\frac{I_e \\\\cdot I_g}{\\\\|I_e\\\\| \\\\, \\\\|I_g\\\\|} \\\\right)<\/p>\n

                        <\/span><\/span>E<\/span><\/span>a<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>(<\/span>I<\/span><\/span>e<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>,<\/span><\/span>I<\/span><\/span>g<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>)<\/span><\/span>=<\/span><\/span><\/span><\/span>cos<\/span><\/span>\u2212<\/span>1<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>(<\/span><\/span><\/span><\/span>\u2225<\/span>I<\/span><\/span>e<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u2225<\/span><\/span>\u2225<\/span>I<\/span><\/span>g<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u2225<\/span><\/span><\/span><\/span><\/span><\/span><\/span>I<\/span><\/span>e<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u22c5<\/span><\/span>I<\/span><\/span>g<\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u200b<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>)<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

                        \u8bba\u6587\u4e3b\u5f20\u5728 sRGB \u7a7a\u95f4\u8bc4\u4f30\u66f4\u5408\u7406：(1) \u76f8\u673a RGB \u4e09\u901a\u9053\u52a8\u6001\u8303\u56f4\u5dee\u5f02\u5927\u4f7f\u8bef\u5dee\u6709\u504f；(2) Gehler \u5e93\u7528\u4e86\u4e24\u53f0\u4e0d\u540c\u76f8\u673a，\u5728\u5404\u81ea\u76f8\u673a\u7a7a\u95f4\u5e73\u5747\u8bef\u5dee\u4e0d\u4e00\u81f4\u3002<\/p>\n

                        9.2 \u4e3b\u8981\u7ed3\u679c（\u89d2\u5ea6\u8bef\u5dee，\u5ea6）<\/h4>\n

                        Gehler \u6570\u636e\u5e93，sRGB \u7a7a\u95f4（Table 1）：<\/p>\n\n\u65b9\u6cd5MeanMedianTrimeanBest-25%Worst-25%<\/tr>\n\n\n\n\n\n\n\n\n\n
                        White-Patch<\/td>\n9.6<\/td>\n7.7<\/td>\n8.6<\/td>\n2.2<\/td>\n20.3<\/td>\n<\/tr>\n
                        Grey-World<\/td>\n9.1<\/td>\n8.6<\/td>\n8.8<\/td>\n2.9<\/td>\n16.2<\/td>\n<\/tr>\n
                        general Grey-World<\/td>\n6.7<\/td>\n4.9<\/td>\n5.4<\/td>\n1.4<\/td>\n14.9<\/td>\n<\/tr>\n
                        1st-order Grey-Edge<\/td>\n7.0<\/td>\n6.3<\/td>\n6.4<\/td>\n2.8<\/td>\n12.5<\/td>\n<\/tr>\n
                        Pixel-based Gamut Mapping<\/td>\n5.8<\/td>\n3.4<\/td>\n4.1<\/td>\n0.7<\/td>\n14.4<\/td>\n<\/tr>\n
                        Edge-based Gamut Mapping<\/td>\n10.1<\/td>\n7.4<\/td>\n8.2<\/td>\n2.8<\/td>\n21.7<\/td>\n<\/tr>\n
                        ML (category-wise prior)<\/td>\n4.3<\/td>\n3.6<\/td>\n3.7<\/td>\n1.4<\/td>\n8.4<\/td>\n<\/tr>\n
                        \u672c\u6587\u65b9\u6cd5<\/td>\n4.1<\/td>\n2.9<\/td>\n3.4<\/td>\n0.7<\/td>\n12.8<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                        Gehler \u6570\u636e\u5e93，\u76f8\u673a RGB \u7a7a\u95f4（Table 2）：\u672c\u6587 4.1\/3.1\/3.3，\u4ecd\u4f18\u4e8e\u5168\u90e8\u514d\u5b66\u4e60\u65b9\u6cd5，\u63a5\u8fd1 ML \u65b9\u6cd5（3.1\/2.3）\u3002<\/p>\n

                        SFU grey-ball，sRGB \u7a7a\u95f4（Table 3）：\u672c\u6587 10.9\/8.5\/9.1，median\/trimean \u4f18\u4e8e\u6240\u6709\u5bf9\u6bd4\u65b9\u6cd5（\u542b ML \u7684 8.9\/9.2）\u3002<\/p>\n

                        9.3 \u7ed3\u8bba<\/h4>\n
                          \n
                        • \u4f18\u4e8e\u6240\u6709\u514d\u5b66\u4e60\u65b9\u6cd5（sRGB \u4e0e\u76f8\u673a\u7a7a\u95f4\u3001mean \u4e0e median \u5747\u5982\u6b64）；<\/li>\n
                        • \u540c\u4e00\u7ec4\u53c2\u6570（\u03b4=0.01, N=1000, \u03c3=2, n=3）\u5728\u4e24\u4e2a\u6570\u636e\u5e93\u4e0a\u90fd\u8868\u73b0\u826f\u597d\u2014\u2014\u65b9\u6cd5\u7a33\u5b9a\u3001\u65e0\u9700\u8c03\u53c2；<\/li>\n
                        • \u6027\u80fd\u63a5\u8fd1\u590d\u6742\u7684\u5b66\u4e60\u7c7b\u65b9\u6cd5，\u800c\u8ba1\u7b97\u4ee3\u4ef7\u5f88\u4f4e；<\/li>\n
                        • sRGB \u7a7a\u95f4\u8bef\u5dee\u6574\u4f53\u9ad8\u4e8e\u76f8\u673a\u7a7a\u95f4，\u6e90\u4e8e\u76f8\u673a\u8272\u5f69\u7a7a\u95f4\u52a8\u6001\u8303\u56f4\u66f4\u7a84\u3002<\/li>\n<\/ul>\n
                          \n

                          10. \u603b\u7ed3\u4e0e\u542f\u793a<\/h3>\n

                          10.1 \u65b9\u6cd5\u672c\u8d28<\/h4>\n

                          \u628a"\u4e8c\u7ef4\u5149\u6e90\u4f30\u8ba1"\u5206\u89e3\u4e3a"\u4e00\u7ef4\u8272\u6e29\u6295\u7968"： \u666e\u6717\u514b\u5047\u8bbe\u628a\u53ef\u884c\u5149\u6e90\u7ea6\u675f\u5230\u8f68\u8ff9\u4e0a \u2192 \u6bcf\u4e2a\u7070\u50cf\u7d20\u7ecf\u6700\u8fd1\u70b9\u6295\u5f71\u8bfb\u51fa\u4e00\u4e2a\u8272\u6e29 \u2192 MIRED \u5c3a\u5ea6\u4e0a\u6784\u5efa\u4eae\u5ea6\u52a0\u6743\u76f4\u65b9\u56fe \u2192 \u9ad8\u65af\u5e73\u6ed1\u540e\u53d6\u5cf0 \u2192 \u80dc\u51fa\u90bb\u57df\u5185\u50cf\u7d20\u7684\u52a0\u6743\u91cd\u5fc3\u5373\u5149\u6e90\u3002<\/p>\n

                          10.2 \u5c40\u9650\u4e0e\u5c55\u671b<\/h4>\n
                            \n
                          • \u4f9d\u8d56\u666e\u6717\u514b\u5047\u8bbe：\u5bf9\u8fdc\u79bb\u666e\u6717\u514b\u8f68\u8ff9\u7684 LED\/\u8367\u5149\u706f\u5149\u6e90，\u8f68\u8ff9\u8ddd\u79bb\u7b5b\u9009\u4f1a\u5931\u6548\u6216\u7ed9\u51fa\u8bef\u5bfc\u6027 CCT；<\/li>\n
                          • \u5355\u4e00\u5149\u6e90\u5047\u8bbe：\u7b97\u6cd5\u8f93\u51fa\u5355\u4e00\u5149\u6e90；\u8bba\u6587\u6307\u51fa\u76f4\u65b9\u56fe\u672c\u8eab\u5305\u542b\u591a\u5cf0\u4fe1\u606f，\u7ec6\u5316\u7684\u76f4\u65b9\u56fe\u5206\u6790\u53ef\u5b9e\u73b0\u573a\u666f\u591a\u5149\u6e90\u4f30\u8ba1\u2014\u2014\u8fd9\u662f\u4f5c\u8005\u7ed9\u51fa\u7684\u672a\u6765\u65b9\u5411\u3002<\/li>\n<\/ul>\n
                            \n","protected":false},"excerpt":{"rendered":"

                            Illuminant Estimation from Projections on the Planckian Locus
                            \n\u57fa\u4e8e\u666e\u6717\u514b\u8f68\u8ff9\u6295\u5f71\u7684\u5149\u6e90\u4f30\u8ba1 \u2014\u2014 \u8bba\u6587\u8be6\u7ec6\u603b\u7ed3（\u91cd\u70b9：\u6295\u5f71\u4e0e\u63d2\u503c\u539f\u7406） \u8bba\u6587\u4fe1\u606f：Baptiste Mazin, Julie Delon, Yann Gousseau（LTCI, T\u00e9l\u00e9com-ParisTech, CNRS） ECCV 2012 Workshops<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[12082,50,3554,523],"topic":[],"class_list":["post-118147","post","type-post","status-publish","format-standard","hentry","category-server","tag-12082","tag-50","tag-3554","tag-523"],"yoast_head":"\n\u57fa\u4e8e\u666e\u6717\u514b\u8f68\u8ff9\u6295\u5f71\u7684\u5149\u6e90\u4f30\u8ba1 \u2014 \u8bba\u6587\u8be6\u7ec6\u603b\u7ed3 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/118147.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u57fa\u4e8e\u666e\u6717\u514b\u8f68\u8ff9\u6295\u5f71\u7684\u5149\u6e90\u4f30\u8ba1 \u2014 \u8bba\u6587\u8be6\u7ec6\u603b\u7ed3 - 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