{"id":53203,"date":"2025-08-12T06:39:20","date_gmt":"2025-08-11T22:39:20","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/53203.html"},"modified":"2025-08-12T06:39:20","modified_gmt":"2025-08-11T22:39:20","slug":"%e4%b9%9e%e4%b8%90%e5%93%a5%e7%9a%84%e7%a7%81%e6%88%bf%e8%8f%9c%ef%bc%88ubuntu-opencv%e7%af%87-image-processing-%e8%8a%82-%e4%b9%8b-out-of-focus-deblur-filter-%e5%a4%b1%e7%84%a6","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/53203.html","title":{"rendered":"\u4e5e\u4e10\u54e5\u7684\u79c1\u623f\u83dc\uff08Ubuntu OpenCV\u7bc7\u2014\u2014Image Processing \u8282 \u4e4b Out-of-focus Deblur Filter \u5931\u7126\u53bb\u6a21\u7cca\u6ee4\u6ce2\u5668 \u6ee4\u955c\uff09"},"content":{"rendered":"<ul>\n<li>\u64cd\u4f5c\u7cfb\u7edf&#xff1a;\u624b\u673a\u5b89\u88c5 Termux ,Termux \u5185\u5b89\u88c5 ubuntu\n<ul>\n<li>Termux 0.119.0-beta.3<\/li>\n<li>\u5185\u5d4c ubuntu 24.04<\/li>\n<\/ul>\n<\/li>\n<li>\u7f16\u8bd1\u5668&#xff1a;GNU g&#043;&#043; 14.2.0<\/li>\n<li>\u7f16\u8f91\u5668&#xff1a;Emacs 29.3<\/li>\n<li>OpenCV&#xff1a;4.13.0<\/li>\n<\/ul>\n<h2>\u76ee\u6807<\/h2>\n<ul>\n<li>\u4ec0\u4e48\u662f\u964d\u89e3\u56fe\u50cf\u6a21\u578b<\/li>\n<li>\u5931\u7126\u56fe\u50cf\u7684 PSF \u662f\u4ec0\u4e48<\/li>\n<li>\u5982\u4f55\u6062\u590d\u6a21\u7cca\u7684\u56fe\u50cf<\/li>\n<li>\u4ec0\u4e48\u662f\u7ef4\u7eb3\u8fc7\u6ee4\u5668<\/li>\n<\/ul>\n<h2>\u7406\u8bba<\/h2>\n<h3>\u4ec0\u4e48\u662f\u9000\u5316\/\u964d\u7ea7\u56fe\u50cf\u6a21\u578b<\/h3>\n<p>\u4ee5\u4e0b\u662f\u9891\u57df\u8868\u793a\u4e2d\u56fe\u50cf\u9000\u5316\u7684\u6570\u5b66\u6a21\u578b&#xff1a;<br \/>\n<span class=\"katex--display\"><span class=\"katex-display\"><span class=\"katex\"><span class=\"katex-mathml\">S&#061;H\u22c5U&#043;NS &#061; H\\\\cdot U &#043; N<\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0576em\">S<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">&#061;<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0813em\">H<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u22c5<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.7667em;vertical-align: -0.0833em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.109em\">U<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">&#043;<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.109em\">N<\/span><\/span><\/span><\/span><\/span><\/span><br \/>\n\u5176\u4e2d S \u662f\u6a21\u7cca&#xff08;\u9000\u5316&#xff09;\u56fe\u50cf\u7684\u5149\u8c31&#xff0c;U \u662f\u539f\u59cb\u771f\u5b9e&#xff08;\u672a\u9000\u5316&#xff09;\u56fe\u50cf\u7684\u5149\u8c31&#xff0c;H \u662f\u70b9\u6269\u6563\u51fd\u6570&#xff08;PSF&#xff09;\u7684\u9891\u7387\u54cd\u5e94&#xff0c;N \u662f\u52a0\u6027\u566a\u58f0&#xff08;\u5e72\u6270&#xff09;\u7684\u9891\u8c31<\/p>\n<p>\u5706\u5f62 PSF \u662f\u5931\u7126\u7578\u53d8\u7684\u826f\u597d\u8fd1\u4f3c\u503c\u3002\u8fd9\u6837\u7684 PSF \u4ec5\u7531\u4e00\u4e2a\u53c2\u6570\u6307\u5b9a &#8211; \u534a\u5f84 R \u3002\u672c\u5de5\u4f5c\u4e2d\u4f7f\u7528\u4e86\u5706\u5f62 PSF<br \/>\n<img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250811223918-689a7116e7f30.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>\u5982\u4f55\u6062\u590d\u6a21\u7cca\u7684\u56fe\u50cf<\/h3>\n<p>\u6062\u590d&#xff08;\u53bb\u6a21\u7cca&#xff09;\u7684\u76ee\u7684\u662f\u83b7\u5f97\u539f\u59cb\u56fe\u50cf\u7684\u4f30\u8ba1\u503c\u3002\u9891\u57df\u4e2d\u7684\u6062\u590d\u516c\u5f0f\u4e3a&#xff1a;<br \/>\n<span class=\"katex--display\"><span class=\"katex-display\"><span class=\"katex\"><span class=\"katex-mathml\">U\u2032&#061;Hw\u22c5SU&#039; &#061; H_w\\\\cdot S<\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.8019em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.109em\">U<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8019em\"><span class=\"\" style=\"top: -3.113em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mtight\">\u2032<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">&#061;<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.8333em;vertical-align: -0.15em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.0813em\">H<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.1514em\"><span class=\"\" style=\"top: -2.55em;margin-left: -0.0813em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.0269em\">w<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.15em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">\u22c5<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0576em\">S<\/span><\/span><\/span><\/span><\/span><\/span><br \/>\n\u5176\u4e2d <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">U\u2032U&#039;<\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.7519em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.109em\">U<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.7519em\"><span class=\"\" style=\"top: -3.063em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mtight\">\u2032<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> \u662f\u539f\u59cb\u56fe\u50cf <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">UU<\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.109em\">U<\/span><\/span><\/span><\/span><\/span> \u7684\u4f30\u8ba1\u5149\u8c31&#xff0c;<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">HwH_w<\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.8333em;vertical-align: -0.15em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.0813em\">H<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.1514em\"><span class=\"\" style=\"top: -2.55em;margin-left: -0.0813em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.0269em\">w<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.15em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> \u662f\u6062\u590d\u8fc7\u6ee4\u5668&#xff0c;\u4f8b\u5982&#xff0c;\u7ef4\u7eb3\u8fc7\u6ee4\u5668<\/p>\n<h3>\u4ec0\u4e48\u662f\u7ef4\u7eb3\u8fc7\u6ee4\u5668<\/h3>\n<p>\u7ef4\u7eb3\u6ee4\u955c\/\u6ee4\u6ce2\u5668\u662f\u4e00\u79cd\u6062\u590d\u6a21\u7cca\u56fe\u50cf\u7684\u65b9\u6cd5\u3002\u5047\u8bbePSF\u662f\u771f\u5b9e\u5bf9\u79f0\u4fe1\u53f7&#xff0c;\u539f\u59cb\u771f\u5b9e\u56fe\u50cf\u7684\u529f\u7387\u8c31\u548c\u566a\u58f0\u672a\u77e5&#xff0c;\u90a3\u4e48\u7b80\u5316\u7684\u7ef4\u7eb3\u516c\u5f0f\u4e3a&#xff1a;<br \/>\n<span class=\"katex--display\"><span class=\"katex-display\"><span class=\"katex\"><span class=\"katex-mathml\">Hw&#061;H\u2223H\u22232&#043;1SNR<br \/>\nH_w &#061; \\\\frac{H}{|H|^2&#043;\\\\frac{1}{SNR}}<br \/>\n<\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.8333em;vertical-align: -0.15em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.0813em\">H<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.1514em\"><span class=\"\" style=\"top: -2.55em;margin-left: -0.0813em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.0269em\">w<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.15em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">&#061;<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 2.4404em;vertical-align: -1.0801em\"><\/span><span class=\"mord\"><span class=\"mopen nulldelimiter\"><\/span><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 1.3603em\"><span class=\"\" style=\"top: -2.2649em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"mord\"><span class=\"mord\">\u2223<\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0813em\">H<\/span><span class=\"mord\"><span class=\"mord\">\u2223<\/span><span class=\"msupsub\"><span class=\"vlist-t\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.7401em\"><span class=\"\" style=\"top: -2.989em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\">2<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mbin\">&#043;<\/span><span class=\"mspace\" style=\"margin-right: 0.2222em\"><\/span><span class=\"mord\"><span class=\"mopen nulldelimiter\"><\/span><span class=\"mfrac\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.8451em\"><span class=\"\" style=\"top: -2.655em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.0077em\">SNR<\/span><\/span><\/span><\/span><span class=\"\" style=\"top: -3.23em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"frac-line\" style=\"border-bottom-width: 0.04em\"><\/span><\/span><span class=\"\" style=\"top: -3.394em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mtight\">1<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.345em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><span class=\"mclose nulldelimiter\"><\/span><\/span><\/span><\/span><span class=\"\" style=\"top: -3.23em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"frac-line\" style=\"border-bottom-width: 0.04em\"><\/span><\/span><span class=\"\" style=\"top: -3.677em\"><span class=\"pstrut\" style=\"height: 3em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.0813em\">H<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 1.0801em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><span class=\"mclose nulldelimiter\"><\/span><\/span><\/span><\/span><\/span><\/span><\/span><br \/>\n\u5176\u4e2d <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">SNRSNR<\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0077em\">SNR<\/span><\/span><\/span><\/span><\/span> \u4e3a\u4fe1\u566a\u6bd4&#xff0c;\u4e3a\u4e86\u901a\u8fc7\u7ef4\u7eb3\u6ee4\u5149\u7247\u6062\u590d\u5931\u7126\u56fe\u50cf&#xff0c;\u5b83\u9700\u8981\u77e5\u9053 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">SNRSNR<\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0077em\">SNR<\/span><\/span><\/span><\/span><\/span> \u548c <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">RR<\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0077em\">R<\/span><\/span><\/span><\/span><\/span>  \u5706\u7684 PSF<\/p>\n<h2>\u6e90\u4ee3\u7801<\/h2>\n<p>  <span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n  <span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&#034;opencv2\/highgui.hpp&#034;<\/span><\/span><br \/>\n  <span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&#034;opencv2\/imgproc.hpp&#034;<\/span><\/span><br \/>\n  <span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&#034;opencv2\/imgcodecs.hpp&#034;<\/span><\/span><\/p>\n<p>  <span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> cv<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token keyword\">void<\/span> <span class=\"token function\">help<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token keyword\">void<\/span> <span class=\"token function\">calcPSF<\/span><span class=\"token punctuation\">(<\/span>Mat<span class=\"token operator\">&amp;<\/span> outputImg<span class=\"token punctuation\">,<\/span> Size filterSize<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> R<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token keyword\">void<\/span> <span class=\"token function\">fftshift<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> Mat<span class=\"token operator\">&amp;<\/span> inputImg<span class=\"token punctuation\">,<\/span> Mat<span class=\"token operator\">&amp;<\/span> outputImg<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token keyword\">void<\/span> <span class=\"token function\">filter2DFreq<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> Mat<span class=\"token operator\">&amp;<\/span> inputImg<span class=\"token punctuation\">,<\/span> Mat<span class=\"token operator\">&amp;<\/span> outputImg<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">const<\/span> Mat<span class=\"token operator\">&amp;<\/span> H<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token keyword\">void<\/span> <span class=\"token function\">calcWnrFilter<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> Mat<span class=\"token operator\">&amp;<\/span> input_h_PSF<span class=\"token punctuation\">,<\/span> Mat<span class=\"token operator\">&amp;<\/span> output_G<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">double<\/span> nsr<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token keyword\">const<\/span> String keys <span class=\"token operator\">&#061;<\/span><br \/>\n    <span class=\"token string\">&#034;{help h usage ? |             | print this message   }&#034;<\/span><br \/>\n    <span class=\"token string\">&#034;{image          |original.jpg | input image name     }&#034;<\/span><br \/>\n    <span class=\"token string\">&#034;{R              |5           | radius               }&#034;<\/span><br \/>\n    <span class=\"token string\">&#034;{SNR            |100         | signal to noise ratio}&#034;<\/span><br \/>\n    <span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> argc<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">char<\/span> <span class=\"token operator\">*<\/span>argv<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><br \/>\n  <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">help<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    CommandLineParser <span class=\"token function\">parser<\/span><span class=\"token punctuation\">(<\/span>argc<span class=\"token punctuation\">,<\/span> argv<span class=\"token punctuation\">,<\/span> keys<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>parser<span class=\"token punctuation\">.<\/span><span class=\"token function\">has<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;help&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n      <span class=\"token punctuation\">{<\/span><br \/>\n        parser<span class=\"token punctuation\">.<\/span><span class=\"token function\">printMessage<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">int<\/span> R <span class=\"token operator\">&#061;<\/span> parser<span class=\"token punctuation\">.<\/span><span class=\"token generic-function\"><span class=\"token function\">get<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;R&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> snr <span class=\"token operator\">&#061;<\/span> parser<span class=\"token punctuation\">.<\/span><span class=\"token generic-function\"><span class=\"token function\">get<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;SNR&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    string strInFileName <span class=\"token operator\">&#061;<\/span> parser<span class=\"token punctuation\">.<\/span><span class=\"token generic-function\"><span class=\"token function\">get<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span>String<span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;image&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    samples<span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">addSamplesDataSearchSubDirectory<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;doc\/tutorials\/imgproc\/out_of_focus_deblur_filter\/images&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>parser<span class=\"token punctuation\">.<\/span><span class=\"token function\">check<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n      <span class=\"token punctuation\">{<\/span><br \/>\n        parser<span class=\"token punctuation\">.<\/span><span class=\"token function\">printErrors<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token punctuation\">}<\/span><\/p>\n<p>    Mat imgIn<span class=\"token punctuation\">;<\/span><br \/>\n    imgIn <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">imread<\/span><span class=\"token punctuation\">(<\/span>samples<span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">findFile<\/span><span class=\"token punctuation\">(<\/span> strInFileName <span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> IMREAD_GRAYSCALE<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>imgIn<span class=\"token punctuation\">.<\/span><span class=\"token function\">empty<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token comment\">\/\/check whether the image is loaded or not<\/span><br \/>\n      <span class=\"token punctuation\">{<\/span><br \/>\n        cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;ERROR : Image cannot be loaded..!!&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token punctuation\">}<\/span><\/p>\n<p>    Mat imgOut<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ it needs to process even image only<\/span><br \/>\n    Rect roi <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">Rect<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> imgIn<span class=\"token punctuation\">.<\/span>cols <span class=\"token operator\">&amp;<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> imgIn<span class=\"token punctuation\">.<\/span>rows <span class=\"token operator\">&amp;<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/Hw calculation (start)<\/span><br \/>\n    Mat Hw<span class=\"token punctuation\">,<\/span> h<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">calcPSF<\/span><span class=\"token punctuation\">(<\/span>h<span class=\"token punctuation\">,<\/span> roi<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> R<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">calcWnrFilter<\/span><span class=\"token punctuation\">(<\/span>h<span class=\"token punctuation\">,<\/span> Hw<span class=\"token punctuation\">,<\/span> <span class=\"token number\">1.0<\/span> <span class=\"token operator\">\/<\/span> <span class=\"token keyword\">double<\/span><span class=\"token punctuation\">(<\/span>snr<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/Hw calculation (stop)<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ filtering (start)<\/span><br \/>\n    <span class=\"token function\">filter2DFreq<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">imgIn<\/span><span class=\"token punctuation\">(<\/span>roi<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> imgOut<span class=\"token punctuation\">,<\/span> Hw<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/ filtering (stop)<\/span><\/p>\n<p>    imgOut<span class=\"token punctuation\">.<\/span><span class=\"token function\">convertTo<\/span><span class=\"token punctuation\">(<\/span>imgOut<span class=\"token punctuation\">,<\/span> CV_8U<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">normalize<\/span><span class=\"token punctuation\">(<\/span>imgOut<span class=\"token punctuation\">,<\/span> imgOut<span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">255<\/span><span class=\"token punctuation\">,<\/span> NORM_MINMAX<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">imshow<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Original&#034;<\/span><span class=\"token punctuation\">,<\/span> imgIn<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">imshow<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Debluring&#034;<\/span><span class=\"token punctuation\">,<\/span> imgOut<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">imwrite<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;result.jpg&#034;<\/span><span class=\"token punctuation\">,<\/span> imgOut<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">waitKey<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token keyword\">void<\/span> <span class=\"token function\">help<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n  <span class=\"token punctuation\">{<\/span><br \/>\n    cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;2018-07-12&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n    cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;DeBlur_v8&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n    cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;You will learn how to recover an out-of-focus image by Wiener filter&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token keyword\">void<\/span> <span class=\"token function\">calcPSF<\/span><span class=\"token punctuation\">(<\/span>Mat<span class=\"token operator\">&amp;<\/span> outputImg<span class=\"token punctuation\">,<\/span> Size filterSize<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> R<span class=\"token punctuation\">)<\/span><br \/>\n  <span class=\"token punctuation\">{<\/span><br \/>\n    Mat <span class=\"token function\">h<\/span><span class=\"token punctuation\">(<\/span>filterSize<span class=\"token punctuation\">,<\/span> CV_32F<span class=\"token punctuation\">,<\/span> <span class=\"token function\">Scalar<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    Point <span class=\"token function\">point<\/span><span class=\"token punctuation\">(<\/span>filterSize<span class=\"token punctuation\">.<\/span>width <span class=\"token operator\">\/<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> filterSize<span class=\"token punctuation\">.<\/span>height <span class=\"token operator\">\/<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">circle<\/span><span class=\"token punctuation\">(<\/span>h<span class=\"token punctuation\">,<\/span> point<span class=\"token punctuation\">,<\/span> R<span class=\"token punctuation\">,<\/span> <span class=\"token number\">255<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">8<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    Scalar summa <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">sum<\/span><span class=\"token punctuation\">(<\/span>h<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    outputImg <span class=\"token operator\">&#061;<\/span> h <span class=\"token operator\">\/<\/span> summa<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token keyword\">void<\/span> <span class=\"token function\">fftshift<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> Mat<span class=\"token operator\">&amp;<\/span> inputImg<span class=\"token punctuation\">,<\/span> Mat<span class=\"token operator\">&amp;<\/span> outputImg<span class=\"token punctuation\">)<\/span><br \/>\n  <span class=\"token punctuation\">{<\/span><br \/>\n    outputImg <span class=\"token operator\">&#061;<\/span> inputImg<span class=\"token punctuation\">.<\/span><span class=\"token function\">clone<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> cx <span class=\"token operator\">&#061;<\/span> outputImg<span class=\"token punctuation\">.<\/span>cols <span class=\"token operator\">\/<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> cy <span class=\"token operator\">&#061;<\/span> outputImg<span class=\"token punctuation\">.<\/span>rows <span class=\"token operator\">\/<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    Mat <span class=\"token function\">q0<\/span><span class=\"token punctuation\">(<\/span>outputImg<span class=\"token punctuation\">,<\/span> <span class=\"token function\">Rect<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> cx<span class=\"token punctuation\">,<\/span> cy<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    Mat <span class=\"token function\">q1<\/span><span class=\"token punctuation\">(<\/span>outputImg<span class=\"token punctuation\">,<\/span> <span class=\"token function\">Rect<\/span><span class=\"token punctuation\">(<\/span>cx<span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> cx<span class=\"token punctuation\">,<\/span> cy<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    Mat <span class=\"token function\">q2<\/span><span class=\"token punctuation\">(<\/span>outputImg<span class=\"token punctuation\">,<\/span> <span class=\"token function\">Rect<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> cy<span class=\"token punctuation\">,<\/span> cx<span class=\"token punctuation\">,<\/span> cy<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    Mat <span class=\"token function\">q3<\/span><span class=\"token punctuation\">(<\/span>outputImg<span class=\"token punctuation\">,<\/span> <span class=\"token function\">Rect<\/span><span class=\"token punctuation\">(<\/span>cx<span class=\"token punctuation\">,<\/span> cy<span class=\"token punctuation\">,<\/span> cx<span class=\"token punctuation\">,<\/span> cy<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    Mat tmp<span class=\"token punctuation\">;<\/span><br \/>\n    q0<span class=\"token punctuation\">.<\/span><span class=\"token function\">copyTo<\/span><span class=\"token punctuation\">(<\/span>tmp<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    q3<span class=\"token punctuation\">.<\/span><span class=\"token function\">copyTo<\/span><span class=\"token punctuation\">(<\/span>q0<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    tmp<span class=\"token punctuation\">.<\/span><span class=\"token function\">copyTo<\/span><span class=\"token punctuation\">(<\/span>q3<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    q1<span class=\"token punctuation\">.<\/span><span class=\"token function\">copyTo<\/span><span class=\"token punctuation\">(<\/span>tmp<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    q2<span class=\"token punctuation\">.<\/span><span class=\"token function\">copyTo<\/span><span class=\"token punctuation\">(<\/span>q1<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    tmp<span class=\"token punctuation\">.<\/span><span class=\"token function\">copyTo<\/span><span class=\"token punctuation\">(<\/span>q2<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token keyword\">void<\/span> <span class=\"token function\">filter2DFreq<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> Mat<span class=\"token operator\">&amp;<\/span> inputImg<span class=\"token punctuation\">,<\/span> Mat<span class=\"token operator\">&amp;<\/span> outputImg<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">const<\/span> Mat<span class=\"token operator\">&amp;<\/span> H<span class=\"token punctuation\">)<\/span><br \/>\n  <span class=\"token punctuation\">{<\/span><br \/>\n    Mat planes<span class=\"token punctuation\">[<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token generic-function\"><span class=\"token function\">Mat_<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">float<\/span><span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span>inputImg<span class=\"token punctuation\">.<\/span><span class=\"token function\">clone<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Mat<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">zeros<\/span><span class=\"token punctuation\">(<\/span>inputImg<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> CV_32F<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    Mat complexI<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">merge<\/span><span class=\"token punctuation\">(<\/span>planes<span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> complexI<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">dft<\/span><span class=\"token punctuation\">(<\/span>complexI<span class=\"token punctuation\">,<\/span> complexI<span class=\"token punctuation\">,<\/span> DFT_SCALE<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    Mat planesH<span class=\"token punctuation\">[<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token generic-function\"><span class=\"token function\">Mat_<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">float<\/span><span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span>H<span class=\"token punctuation\">.<\/span><span class=\"token function\">clone<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Mat<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">zeros<\/span><span class=\"token punctuation\">(<\/span>H<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> CV_32F<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    Mat complexH<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">merge<\/span><span class=\"token punctuation\">(<\/span>planesH<span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> complexH<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    Mat complexIH<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">mulSpectrums<\/span><span class=\"token punctuation\">(<\/span>complexI<span class=\"token punctuation\">,<\/span> complexH<span class=\"token punctuation\">,<\/span> complexIH<span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token function\">idft<\/span><span class=\"token punctuation\">(<\/span>complexIH<span class=\"token punctuation\">,<\/span> complexIH<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">split<\/span><span class=\"token punctuation\">(<\/span>complexIH<span class=\"token punctuation\">,<\/span> planes<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    outputImg <span class=\"token operator\">&#061;<\/span> planes<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token keyword\">void<\/span> <span class=\"token function\">calcWnrFilter<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> Mat<span class=\"token operator\">&amp;<\/span> input_h_PSF<span class=\"token punctuation\">,<\/span> Mat<span class=\"token operator\">&amp;<\/span> output_G<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">double<\/span> nsr<span class=\"token punctuation\">)<\/span><br \/>\n  <span class=\"token punctuation\">{<\/span><br \/>\n    Mat h_PSF_shifted<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">fftshift<\/span><span class=\"token punctuation\">(<\/span>input_h_PSF<span class=\"token punctuation\">,<\/span> h_PSF_shifted<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    Mat planes<span class=\"token punctuation\">[<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token generic-function\"><span class=\"token function\">Mat_<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">float<\/span><span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span>h_PSF_shifted<span class=\"token punctuation\">.<\/span><span class=\"token function\">clone<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Mat<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">zeros<\/span><span class=\"token punctuation\">(<\/span>h_PSF_shifted<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> CV_32F<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    Mat complexI<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">merge<\/span><span class=\"token punctuation\">(<\/span>planes<span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> complexI<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">dft<\/span><span class=\"token punctuation\">(<\/span>complexI<span class=\"token punctuation\">,<\/span> complexI<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">split<\/span><span class=\"token punctuation\">(<\/span>complexI<span class=\"token punctuation\">,<\/span> planes<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    Mat denom<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">pow<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">abs<\/span><span class=\"token punctuation\">(<\/span>planes<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> denom<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    denom <span class=\"token operator\">&#043;&#061;<\/span> nsr<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">divide<\/span><span class=\"token punctuation\">(<\/span>planes<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> denom<span class=\"token punctuation\">,<\/span> output_G<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<h2>\u89e3\u91ca\u8bf4\u660e<\/h2>\n<ul>\n<li>\u5931\u7126\u56fe\u50cf\u6062\u590d\u7b97\u6cd5\u5305\u62ecPSF\u751f\u6210\u3001\u7ef4\u7eb3\u6ee4\u6ce2\u5668\u751f\u6210\u548c\u9891\u57df\u6a21\u7cca\u56fe\u50cf\u6ee4\u6ce2&#xff1a;  <span class=\"token comment\">\/\/ it needs to process even image only<\/span><br \/>\n  Rect roi <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">Rect<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> imgIn<span class=\"token punctuation\">.<\/span>cols <span class=\"token operator\">&amp;<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> imgIn<span class=\"token punctuation\">.<\/span>rows <span class=\"token operator\">&amp;<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/Hw calculation (start)<\/span><br \/>\n  Mat Hw<span class=\"token punctuation\">,<\/span> h<span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token function\">calcPSF<\/span><span class=\"token punctuation\">(<\/span>h<span class=\"token punctuation\">,<\/span> roi<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> R<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token function\">calcWnrFilter<\/span><span class=\"token punctuation\">(<\/span>h<span class=\"token punctuation\">,<\/span> Hw<span class=\"token punctuation\">,<\/span> <span class=\"token number\">1.0<\/span> <span class=\"token operator\">\/<\/span> <span class=\"token keyword\">double<\/span><span class=\"token punctuation\">(<\/span>snr<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token comment\">\/\/Hw calculation (stop)<\/span><\/p>\n<p>  <span class=\"token comment\">\/\/ filtering (start)<\/span><br \/>\n  <span class=\"token function\">filter2DFreq<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">imgIn<\/span><span class=\"token punctuation\">(<\/span>roi<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> imgOut<span class=\"token punctuation\">,<\/span> Hw<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token comment\">\/\/ filtering (stop)<\/span><\/p>\n<\/li>\n<li>\u51fd\u6570 calcPSF() \u6839\u636e\u8f93\u5165\u53c2\u6570\u534a\u5f84 R \u5f62\u6210\u5706\u5f62 PSF  <span class=\"token keyword\">void<\/span> <span class=\"token function\">calcPSF<\/span><span class=\"token punctuation\">(<\/span>Mat<span class=\"token operator\">&amp;<\/span> outputImg<span class=\"token punctuation\">,<\/span> Size filterSize<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> R<span class=\"token punctuation\">)<\/span><br \/>\n  <span class=\"token punctuation\">{<\/span><br \/>\n    Mat <span class=\"token function\">h<\/span><span class=\"token punctuation\">(<\/span>filterSize<span class=\"token punctuation\">,<\/span> CV_32F<span class=\"token punctuation\">,<\/span> <span class=\"token function\">Scalar<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    Point <span class=\"token function\">point<\/span><span class=\"token punctuation\">(<\/span>filterSize<span class=\"token punctuation\">.<\/span>width <span class=\"token operator\">\/<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> filterSize<span class=\"token punctuation\">.<\/span>height <span class=\"token operator\">\/<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">circle<\/span><span class=\"token punctuation\">(<\/span>h<span class=\"token punctuation\">,<\/span> point<span class=\"token punctuation\">,<\/span> R<span class=\"token punctuation\">,<\/span> <span class=\"token number\">255<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">8<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    Scalar summa <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">sum<\/span><span class=\"token punctuation\">(<\/span>h<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    outputImg <span class=\"token operator\">&#061;<\/span> h <span class=\"token operator\">\/<\/span> summa<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<\/li>\n<li>\u6839\u636e\u4e0a\u8ff0\u516c\u5f0f&#xff0c;\u51fd\u6570 calcWnrFilter() \u5408\u6210\u7b80\u5316\u7684\u7ef4\u7eb3\u6ee4\u6ce2\u5668 <span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\">HwH_w<\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.8333em;vertical-align: -0.15em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\" style=\"margin-right: 0.0813em\">H<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.1514em\"><span class=\"\" style=\"top: -2.55em;margin-left: -0.0813em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.0269em\">w<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.15em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>  <span class=\"token keyword\">void<\/span> <span class=\"token function\">calcWnrFilter<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> Mat<span class=\"token operator\">&amp;<\/span> input_h_PSF<span class=\"token punctuation\">,<\/span> Mat<span class=\"token operator\">&amp;<\/span> output_G<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">double<\/span> nsr<span class=\"token punctuation\">)<\/span><br \/>\n  <span class=\"token punctuation\">{<\/span><br \/>\n    Mat h_PSF_shifted<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">fftshift<\/span><span class=\"token punctuation\">(<\/span>input_h_PSF<span class=\"token punctuation\">,<\/span> h_PSF_shifted<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    Mat planes<span class=\"token punctuation\">[<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token generic-function\"><span class=\"token function\">Mat_<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">float<\/span><span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span>h_PSF_shifted<span class=\"token punctuation\">.<\/span><span class=\"token function\">clone<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Mat<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">zeros<\/span><span class=\"token punctuation\">(<\/span>h_PSF_shifted<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> CV_32F<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    Mat complexI<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">merge<\/span><span class=\"token punctuation\">(<\/span>planes<span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> complexI<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">dft<\/span><span class=\"token punctuation\">(<\/span>complexI<span class=\"token punctuation\">,<\/span> complexI<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">split<\/span><span class=\"token punctuation\">(<\/span>complexI<span class=\"token punctuation\">,<\/span> planes<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    Mat denom<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">pow<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">abs<\/span><span class=\"token punctuation\">(<\/span>planes<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> denom<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    denom <span class=\"token operator\">&#043;&#061;<\/span> nsr<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">divide<\/span><span class=\"token punctuation\">(<\/span>planes<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> denom<span class=\"token punctuation\">,<\/span> output_G<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<\/li>\n<li>\u51fd\u6570 fftshift() \u91cd\u65b0\u6392\u5217 PSF\u3002\u8fd9\u6bb5\u4ee3\u7801\u53ea\u662f\u4ece\u79bb\u6563\u5085\u91cc\u53f6\u53d8\u6362\u6559\u7a0b\u4e2d\u590d\u5236\u7684&#xff1a;  <span class=\"token keyword\">void<\/span> <span class=\"token function\">fftshift<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> Mat<span class=\"token operator\">&amp;<\/span> inputImg<span class=\"token punctuation\">,<\/span> Mat<span class=\"token operator\">&amp;<\/span> outputImg<span class=\"token punctuation\">)<\/span><br \/>\n  <span class=\"token punctuation\">{<\/span><br \/>\n    outputImg <span class=\"token operator\">&#061;<\/span> inputImg<span class=\"token punctuation\">.<\/span><span class=\"token function\">clone<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> cx <span class=\"token operator\">&#061;<\/span> outputImg<span class=\"token punctuation\">.<\/span>cols <span class=\"token operator\">\/<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> cy <span class=\"token operator\">&#061;<\/span> outputImg<span class=\"token punctuation\">.<\/span>rows <span class=\"token operator\">\/<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    Mat <span class=\"token function\">q0<\/span><span class=\"token punctuation\">(<\/span>outputImg<span class=\"token punctuation\">,<\/span> <span class=\"token function\">Rect<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> cx<span class=\"token punctuation\">,<\/span> cy<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    Mat <span class=\"token function\">q1<\/span><span class=\"token punctuation\">(<\/span>outputImg<span class=\"token punctuation\">,<\/span> <span class=\"token function\">Rect<\/span><span class=\"token punctuation\">(<\/span>cx<span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> cx<span class=\"token punctuation\">,<\/span> cy<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    Mat <span class=\"token function\">q2<\/span><span class=\"token punctuation\">(<\/span>outputImg<span class=\"token punctuation\">,<\/span> <span class=\"token function\">Rect<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> cy<span class=\"token punctuation\">,<\/span> cx<span class=\"token punctuation\">,<\/span> cy<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    Mat <span class=\"token function\">q3<\/span><span class=\"token punctuation\">(<\/span>outputImg<span class=\"token punctuation\">,<\/span> <span class=\"token function\">Rect<\/span><span class=\"token punctuation\">(<\/span>cx<span class=\"token punctuation\">,<\/span> cy<span class=\"token punctuation\">,<\/span> cx<span class=\"token punctuation\">,<\/span> cy<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    Mat tmp<span class=\"token punctuation\">;<\/span><br \/>\n    q0<span class=\"token punctuation\">.<\/span><span class=\"token function\">copyTo<\/span><span class=\"token punctuation\">(<\/span>tmp<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    q3<span class=\"token punctuation\">.<\/span><span class=\"token function\">copyTo<\/span><span class=\"token punctuation\">(<\/span>q0<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    tmp<span class=\"token punctuation\">.<\/span><span class=\"token function\">copyTo<\/span><span class=\"token punctuation\">(<\/span>q3<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    q1<span class=\"token punctuation\">.<\/span><span class=\"token function\">copyTo<\/span><span class=\"token punctuation\">(<\/span>tmp<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    q2<span class=\"token punctuation\">.<\/span><span class=\"token function\">copyTo<\/span><span class=\"token punctuation\">(<\/span>q1<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    tmp<span class=\"token punctuation\">.<\/span><span class=\"token function\">copyTo<\/span><span class=\"token punctuation\">(<\/span>q2<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<\/li>\n<li>\u51fd\u6570filter2DFreq() \u8fc7\u6ee4\u9891\u57df\u4e2d\u7684\u6a21\u7cca\u56fe\u50cf&#xff1a;  <span class=\"token keyword\">void<\/span> <span class=\"token function\">filter2DFreq<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> Mat<span class=\"token operator\">&amp;<\/span> inputImg<span class=\"token punctuation\">,<\/span> Mat<span class=\"token operator\">&amp;<\/span> outputImg<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">const<\/span> Mat<span class=\"token operator\">&amp;<\/span> H<span class=\"token punctuation\">)<\/span><br \/>\n  <span class=\"token punctuation\">{<\/span><br \/>\n    Mat planes<span class=\"token punctuation\">[<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token generic-function\"><span class=\"token function\">Mat_<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">float<\/span><span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span>inputImg<span class=\"token punctuation\">.<\/span><span class=\"token function\">clone<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Mat<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">zeros<\/span><span class=\"token punctuation\">(<\/span>inputImg<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> CV_32F<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    Mat complexI<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">merge<\/span><span class=\"token punctuation\">(<\/span>planes<span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> complexI<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">dft<\/span><span class=\"token punctuation\">(<\/span>complexI<span class=\"token punctuation\">,<\/span> complexI<span class=\"token punctuation\">,<\/span> DFT_SCALE<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    Mat planesH<span class=\"token punctuation\">[<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token generic-function\"><span class=\"token function\">Mat_<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">float<\/span><span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span>H<span class=\"token punctuation\">.<\/span><span class=\"token function\">clone<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">Mat<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">zeros<\/span><span class=\"token punctuation\">(<\/span>H<span class=\"token punctuation\">.<\/span><span class=\"token function\">size<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> CV_32F<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    Mat complexH<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">merge<\/span><span class=\"token punctuation\">(<\/span>planesH<span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> complexH<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    Mat complexIH<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">mulSpectrums<\/span><span class=\"token punctuation\">(<\/span>complexI<span class=\"token punctuation\">,<\/span> complexH<span class=\"token punctuation\">,<\/span> complexIH<span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token function\">idft<\/span><span class=\"token punctuation\">(<\/span>complexIH<span class=\"token punctuation\">,<\/span> complexIH<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">split<\/span><span class=\"token punctuation\">(<\/span>complexIH<span class=\"token punctuation\">,<\/span> planes<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    outputImg <span class=\"token operator\">&#061;<\/span> planes<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<\/li>\n<\/ul>\n<h2>\u7ed3\u679c<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250811223919-689a71171af36.jpg\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><br \/>\n<img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250811223919-689a71173a87e.jpg\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" 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