{"id":123288,"date":"2026-11-06T23:56:52","date_gmt":"2026-11-06T15:56:52","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/123288.html"},"modified":"2026-11-06T23:56:52","modified_gmt":"2026-11-06T15:56:52","slug":"%e9%b8%bf%e8%92%99%e7%ab%af%e4%be%a7ocr%e5%ae%9e%e6%88%98%ef%bc%9acore-vision-kit%e7%a6%bb%e7%ba%bf%e6%96%87%e5%ad%97%e8%af%86%e5%88%ab","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/123288.html","title":{"rendered":"\u9e3f\u8499\u7aef\u4fa7OCR\u5b9e\u6218\uff1aCore Vision Kit\u79bb\u7ebf\u6587\u5b57\u8bc6\u522b"},"content":{"rendered":"<p>        \/* MD \/ \u5bcc\u6587\u672c\u4e2d\u7684 .toc\uff08\u542b\u535a\u5ba2\u56ed\u642c\u5bb6\u7b49\u5d4c\u5957\u7ed3\u6784\uff09\uff1b.toc-box \u5728\u4fa7\u680f\uff0c\u4e0d\u53d7\u5f71\u54cd *\/<br \/>\n        #content_views .toc,<br \/>\n        \/* \u7f16\u8f91\u5668\u5e38\u5728\u76ee\u5f55\u524d\u540e\u63d2\u5165\u7a7a p\uff08:empty \u4ecd\u5360 20px\uff09\uff0c\u4e00\u5e76\u53bb\u6389\u907f\u514d\u9876\u7a7a\u9699 *\/<br \/>\n        #content_views.markdown_views &gt; p:empty:has(+ .toc),<br \/>\n        #content_views.markdown_views &gt; .toc + p:empty,<br \/>\n        \/* \u5bcc\u6587\u672c\u65e7\u7248\u76ee\u5f55\u6807\u8bb0 *\/<br \/>\n        #content_views.htmledit_views #main-toc,<br \/>\n        #content_views.htmledit_views #hr-toc,<br \/>\n        #content_views.htmledit_views p[id*=\\&#8221;-toc\\&#8221;] {<br \/>\n          display: none !important;<br \/>\n        }<br \/>\n        \/* \u76ee\u5f55\u53bb\u6389\u540e\uff0c\u7d27\u8ddf\u7684\u9996\u4e2a\u6807\u9898\u4e0d\u518d\u591a\u51fa\u4e00\u5757\u4e0a\u8fb9\u8ddd *\/<br \/>\n        #content_views.markdown_views &gt; .toc + h1,<br \/>\n        #content_views.markdown_views &gt; .toc + h2,<br \/>\n        #content_views.markdown_views &gt; .toc + h3,<br \/>\n        #content_views.markdown_views &gt; .toc + h4,<br \/>\n        #content_views.markdown_views &gt; .toc + p:empty + h1,<br \/>\n        #content_views.markdown_views &gt; .toc + p:empty + h2,<br \/>\n        #content_views.markdown_views &gt; .toc + p:empty + h3,<br \/>\n        #content_views.markdown_views &gt; .toc + p:empty + h4 {<br \/>\n          margin-top: 0 !important;<br \/>\n        }<\/p>\n<h2>\u9e3f\u8499\u7aef\u4fa7OCR\u5b9e\u6218&#xff1a;Core Vision Kit\u79bb\u7ebf\u6587\u5b57\u8bc6\u522b<\/h2>\n<h3>\u9700\u6c42\u4e0e\u9009\u578b<\/h3>\n<p>\u79fb\u52a8\u7aef\u8981\u505a\u6587\u5b57\u8bc6\u522b&#xff08;OCR&#xff09;&#xff0c;\u7b2c\u4e00\u53cd\u5e94\u5f80\u5f80\u662f\u63a5\u4e91\u7aef API\u3002\u4f46\u5728\u5b9e\u9645\u9879\u76ee\u91cc&#xff0c;\u7aef\u4fa7\u65b9\u6848\u8d8a\u6765\u8d8a\u503c\u5f97\u4f18\u5148\u8003\u8651&#xff0c;\u5c24\u5176\u8fd9\u4e09\u4e2a\u573a\u666f&#xff1a;\u56fe\u7247\u6d89\u53ca\u8bc1\u4ef6\u3001\u7968\u636e\u7b49\u654f\u611f\u4fe1\u606f&#xff0c;\u4e0d\u80fd\u51fa\u8bbe\u5907&#xff1b;\u5f31\u7f51\u6216\u79bb\u7ebf\u73af\u5883&#xff08;\u5de1\u68c0\u3001\u4ed3\u50a8&#xff09;\u5fc5\u987b\u53ef\u7528&#xff1b;\u8c03\u7528\u91cf\u5927\u3001\u6309\u6b21\u8ba1\u8d39\u7684\u4e91 API \u6210\u672c\u538b\u4e0d\u4f4f\u3002<\/p>\n<p>\u4e24\u6761\u8def\u7ebf\u5bf9\u6bd4&#xff1a;<\/p>\n<table>\n<tr>\u7ef4\u5ea6\u4e91\u7aef OCR API\u7aef\u4fa7&#xff08;Core Vision Kit&#xff09;<\/tr>\n<tbody>\n<tr>\n<td>\u7f51\u7edc\u4f9d\u8d56<\/td>\n<td>\u5fc5\u987b<\/td>\n<td>\u65e0&#xff0c;\u79bb\u7ebf\u53ef\u7528<\/td>\n<\/tr>\n<tr>\n<td>\u9690\u79c1<\/td>\n<td>\u56fe\u7247\u4e0a\u4f20\u5230\u670d\u52a1\u7aef<\/td>\n<td>\u6570\u636e\u4e0d\u51fa\u8bbe\u5907<\/td>\n<\/tr>\n<tr>\n<td>\u6210\u672c<\/td>\n<td>\u6309\u6b21\u8ba1\u8d39<\/td>\n<td>\u514d\u8d39<\/td>\n<\/tr>\n<tr>\n<td>\u5ef6\u8fdf<\/td>\n<td>\u7f51\u7edc\u5f80\u8fd4&#xff0c;\u51e0\u767e ms \u8d77<\/td>\n<td>\u7aef\u4fa7\u63a8\u7406&#xff0c;\u901a\u5e38\u767e ms \u7ea7<\/td>\n<\/tr>\n<tr>\n<td>\u6a21\u578b\u80fd\u529b<\/td>\n<td>\u5f3a&#xff0c;\u573a\u666f\u4e30\u5bcc<\/td>\n<td>\u5370\u5237\u4f53\u4e3a\u4e3b&#xff0c;\u624b\u5199\/\u827a\u672f\u5b57\u662f\u8fb9\u754c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u9e3f\u8499\u4fa7\u7684\u7aef\u9009\u65b9\u6848\u662f Core Vision Kit \u7684 textRecognition&#xff1a;\u6a21\u578b\u8dd1\u5728\u8bbe\u5907\u4e0a&#xff0c;\u652f\u6301\u7b80\u4f53\u4e2d\u6587\u3001\u7e41\u4f53\u4e2d\u6587\u3001\u82f1\u6587\u3001\u65e5\u6587\u3001\u97e9\u6587\u7684\u5370\u5237\u4f53\u8bc6\u522b&#xff0c;\u65e0\u9700\u7533\u8bf7\u4efb\u4f55\u6743\u9650&#xff08;OCR \u672c\u8eab\u4e0d\u6d89\u53ca\u654f\u611f\u6743\u9650&#xff09;&#xff0c;Stage \u6a21\u578b\u4e0b\u5373\u53ef\u76f4\u63a5\u8c03\u7528\u3002\u672c\u6587\u7528&#034;\u9009\u56fe \u2192 \u8bc6\u522b \u2192 \u53d6\u8bcd&#034;\u8fd9\u4e2a\u5c0f\u5de5\u5177&#xff0c;\u628a\u5b8c\u6574\u94fe\u8def\u8d70\u4e00\u904d\u3002<\/p>\n<h3>\u8c03\u7528\u8303\u5f0f&#xff1a;\u4e09\u6b65\u62ff\u5230\u8bc6\u522b\u7ed3\u679c<\/h3>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> textRecognition <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;&#064;kit.CoreVisionKit&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> image <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;&#064;kit.ImageKit&#039;<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">let<\/span> visionInfo<span class=\"token operator\">:<\/span> textRecognition<span class=\"token punctuation\">.<\/span>VisionInfo <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span> pixelMap<span class=\"token operator\">:<\/span> pixelMap <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">let<\/span> result<span class=\"token operator\">:<\/span> textRecognition<span class=\"token punctuation\">.<\/span>TextRecognitionResult <span class=\"token operator\">&#061;<\/span><br \/>\n    <span class=\"token keyword\">await<\/span> textRecognition<span class=\"token punctuation\">.<\/span><span class=\"token function\">recognizeText<\/span><span class=\"token punctuation\">(<\/span>visionInfo<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u8303\u5f0f\u6781\u7b80&#xff1a;\u6784\u9020 VisionInfo&#xff08;\u5305\u4e00\u4e2a PixelMap&#xff09;\u2192 \u8c03 recognizeText \u2192 \u89e3\u6790\u7ed3\u679c\u3002\u4f46\u6709\u51e0\u4e2a\u7ea6\u675f\u8981\u5148\u4ea4\u4ee3\u6e05\u695a&#xff0c;\u90fd\u662f\u5b9e\u9645\u4f1a\u8e29\u7684\u70b9&#xff1a;<\/p>\n<ul>\n<li>\u8f93\u5165\u53ea\u8ba4 PixelMap&#xff0c;\u683c\u5f0f\u5fc5\u987b RGBA_8888\u3002\u76f8\u518c\u3001\u76f8\u673a\u3001\u8d44\u6e90\u6587\u4ef6\u89e3\u51fa\u7684 PixelMap \u9ed8\u8ba4\u5c31\u662f\u8fd9\u4e2a\u683c\u5f0f&#xff0c;\u4e00\u822c\u4e0d\u7528\u624b\u52a8\u8f6c&#xff1b;\u4ece\u7f51\u7edc\u62ff JPEG\/PNG \u89e3\u7801\u540e\u540c\u6837\u6210\u7acb\u3002<\/li>\n<li>\u56fe\u7247\u5efa\u8bae\u4e0d\u8d85\u8fc7 4096\u00d74096\u3002\u8d85\u5927\u56fe\u5148\u7f29\u653e&#xff0c;\u901f\u5ea6\u548c\u7cbe\u5ea6\u90fd\u66f4\u7a33\u3002<\/li>\n<li>\u53ef\u4ee5\u4f20\u7b2c\u4e8c\u4e2a\u53c2\u6570 TextRecognitionConfiguration&#xff0c;\u76ee\u524d\u53ea\u6709\u4e00\u4e2a\u5f00\u5173 isDirectionDetectionSupported&#xff08;\u9ed8\u8ba4 true&#xff09;\u3002\u5982\u679c\u56fe\u7247\u65b9\u5411\u5df2\u77e5&#xff0c;\u5173\u6389\u5b83\u80fd\u7701\u4e00\u6b21\u65b9\u5411\u68c0\u6d4b&#xff0c;\u63d0\u901f\u660e\u663e&#xff1a;<\/li>\n<\/ul>\n<p><span class=\"token keyword\">let<\/span> config<span class=\"token operator\">:<\/span> textRecognition<span class=\"token punctuation\">.<\/span>TextRecognitionConfiguration <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  isDirectionDetectionSupported<span class=\"token operator\">:<\/span> <span class=\"token boolean\">false<\/span> <span class=\"token comment\">\/\/ \u65b9\u5411\u5df2\u77e5\u65f6\u8df3\u8fc7\u68c0\u6d4b<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">let<\/span> result <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> textRecognition<span class=\"token punctuation\">.<\/span><span class=\"token function\">recognizeText<\/span><span class=\"token punctuation\">(<\/span>visionInfo<span class=\"token punctuation\">,<\/span> config<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<h3>\u7ed3\u679c\u89e3\u6790&#xff1a;\u5757\/\u884c\/\u5b57\u4e09\u7ea7\u6811 &#043; \u5750\u6807<\/h3>\n<p>TextRecognitionResult \u662f\u4e00\u68f5\u4ece\u7c97\u5230\u7ec6\u7684\u4e09\u7ea7\u6811&#xff1a;blocks&#xff08;\u6587\u672c\u5757&#xff09;\u2192 lines&#xff08;\u6587\u672c\u884c&#xff09;\u2192 words&#xff08;\u5355\u8bcd&#xff09;\u3002\u6bcf\u5c42\u90fd\u540c\u65f6\u7ed9\u6587\u672c\u5185\u5bb9\u548c cornerPoints \u8fb9\u754c\u6846\u5750\u6807&#xff08;\u987a\u65f6\u9488\u56db\u70b9&#xff0c;\u7b2c\u4e00\u4e2a\u70b9\u662f\u5de6\u4e0a\u89d2&#xff09;\u3002<\/p>\n<p><span class=\"token comment\">\/\/ \u53ea\u8981\u5168\u6587&#xff1a;\u62fc\u63a5\u5757\u7684\u6587\u672c\u5373\u53ef<\/span><br \/>\n<span class=\"token keyword\">const<\/span> fullText <span class=\"token operator\">&#061;<\/span> result<span class=\"token punctuation\">.<\/span>blocks<span class=\"token punctuation\">.<\/span><span class=\"token function\">map<\/span><span class=\"token punctuation\">(<\/span>b <span class=\"token operator\">&#061;&gt;<\/span> b<span class=\"token punctuation\">.<\/span>value<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">join<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\\\\n&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u8981\u884c\u7ea7\/\u5b57\u7ea7\u4fe1\u606f&#xff08;\u53d6\u8bcd\u3001\u6846\u9009\u3001\u9ad8\u4eae&#xff09;\u65f6\u4e0b\u94bb<\/span><br \/>\n<span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> block <span class=\"token keyword\">of<\/span> result<span class=\"token punctuation\">.<\/span>blocks<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> line <span class=\"token keyword\">of<\/span> block<span class=\"token punctuation\">.<\/span>lines<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token builtin\">console<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">info<\/span><span class=\"token punctuation\">(<\/span><span class=\"token template-string\"><span class=\"token template-punctuation string\">&#096;<\/span><span class=\"token string\">\u884c\u6587\u672c: <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>line<span class=\"token punctuation\">.<\/span>value<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token template-punctuation string\">&#096;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>       <span class=\"token comment\">\/\/ \u884c\u5185\u5bb9<\/span><br \/>\n    <span class=\"token builtin\">console<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">info<\/span><span class=\"token punctuation\">(<\/span><span class=\"token template-string\"><span class=\"token template-punctuation string\">&#096;<\/span><span class=\"token string\">\u884c\u5750\u6807: <\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span><span class=\"token constant\">JSON<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">stringify<\/span><span class=\"token punctuation\">(<\/span>line<span class=\"token punctuation\">.<\/span>cornerPoints<span class=\"token punctuation\">)<\/span><span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token template-punctuation string\">&#096;<\/span><\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> word <span class=\"token keyword\">of<\/span> line<span class=\"token punctuation\">.<\/span>words<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token comment\">\/\/ word.value \/ word.cornerPoints&#xff1a;\u5355\u8bcd\u7ea7\u5185\u5bb9\u548c\u5750\u6807<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>cornerPoints \u662f\u6574\u5957 API \u91cc\u6700\u503c\u94b1\u7684\u90e8\u5206\u2014\u2014\u5b83\u610f\u5473\u7740\u4e0d\u4ec5\u80fd\u62ff\u5230&#034;\u56fe\u91cc\u5199\u4e86\u4ec0\u4e48&#034;&#xff0c;\u8fd8\u80fd\u62ff\u5230&#034;\u5199\u5728\u54ea\u91cc&#034;\u3002\u70b9\u51fb\u53d6\u8bcd\u3001\u5212\u9009\u7ffb\u8bd1\u3001\u533a\u57df\u9ad8\u4eae\u3001\u7968\u636e\u5b57\u6bb5\u5b9a\u4f4d&#xff0c;\u5168\u90fd\u5efa\u7acb\u5728\u5750\u6807\u4e4b\u4e0a\u3002<\/p>\n<h3>\u5b8c\u6574\u5b9e\u73b0&#xff1a;\u9009\u56fe\u53d6\u8bcd\u5de5\u5177<\/h3>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u53ef\u4ee5\u76f4\u63a5\u8dd1\u7684\u9875\u9762&#xff1a;\u76f8\u518c\u9009\u56fe \u2192 \u8f6c PixelMap \u2192 \u8bc6\u522b \u2192 \u5c55\u793a\u5168\u6587&#xff0c;\u9519\u8bef\u8def\u5f84\u5168\u90e8\u515c\u4f4f\u3002<\/p>\n<p><span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> textRecognition <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;&#064;kit.CoreVisionKit&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> image <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;&#064;kit.ImageKit&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> fileIo <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;&#064;kit.CoreFileKit&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> photoAccessHelper <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;&#064;kit.MediaLibraryKit&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">import<\/span> <span class=\"token punctuation\">{<\/span> BusinessError <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">from<\/span> <span class=\"token string\">&#039;&#064;kit.BasicServicesKit&#039;<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token decorator\"><span class=\"token at operator\">&#064;<\/span><span class=\"token function\">Entry<\/span><\/span><br \/>\n<span class=\"token decorator\"><span class=\"token at operator\">&#064;<\/span><span class=\"token function\">Component<\/span><\/span><br \/>\nstruct OcrPage <span class=\"token punctuation\">{<\/span><br \/>\n  <span class=\"token decorator\"><span class=\"token at operator\">&#064;<\/span><span class=\"token function\">State<\/span><\/span> resultText<span class=\"token operator\">:<\/span> <span class=\"token builtin\">string<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#039;&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n  <span class=\"token decorator\"><span class=\"token at operator\">&#064;<\/span><span class=\"token function\">State<\/span><\/span> loading<span class=\"token operator\">:<\/span> <span class=\"token builtin\">boolean<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">false<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>  <span class=\"token keyword\">async<\/span> <span class=\"token function\">pickAndRecognize<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">:<\/span> <span class=\"token builtin\">Promise<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">void<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> picker <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">photoAccessHelper<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">PhotoViewPicker<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> res <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> picker<span class=\"token punctuation\">.<\/span><span class=\"token function\">select<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span><br \/>\n      MIMEType<span class=\"token operator\">:<\/span> photoAccessHelper<span class=\"token punctuation\">.<\/span>PhotoViewMIMETypes<span class=\"token punctuation\">.<\/span><span class=\"token constant\">IMAGE_TYPE<\/span><span class=\"token punctuation\">,<\/span><br \/>\n      maxSelectNumber<span class=\"token operator\">:<\/span> <span class=\"token number\">1<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> uri <span class=\"token operator\">&#061;<\/span> res<span class=\"token punctuation\">.<\/span>photoUris<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\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>uri<span class=\"token punctuation\">)<\/span> <span class=\"token keyword\">return<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>loading <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">try<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token comment\">\/\/ 1. URI \u2192 PixelMap<\/span><br \/>\n      <span class=\"token keyword\">const<\/span> file <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> fileIo<span class=\"token punctuation\">.<\/span><span class=\"token function\">open<\/span><span class=\"token punctuation\">(<\/span>uri<span class=\"token punctuation\">,<\/span> fileIo<span class=\"token punctuation\">.<\/span>OpenMode<span class=\"token punctuation\">.<\/span><span class=\"token constant\">READ_ONLY<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token keyword\">const<\/span> source <span class=\"token operator\">&#061;<\/span> image<span class=\"token punctuation\">.<\/span><span class=\"token function\">createImageSource<\/span><span class=\"token punctuation\">(<\/span>file<span class=\"token punctuation\">.<\/span>fd<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token keyword\">const<\/span> pixelMap <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> source<span class=\"token punctuation\">.<\/span><span class=\"token function\">createPixelMap<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>      <span class=\"token comment\">\/\/ 2. \u7aef\u4fa7\u8bc6\u522b<\/span><br \/>\n      <span class=\"token keyword\">const<\/span> visionInfo<span class=\"token operator\">:<\/span> textRecognition<span class=\"token punctuation\">.<\/span>VisionInfo <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span> pixelMap <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token keyword\">const<\/span> result <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> textRecognition<span class=\"token punctuation\">.<\/span><span class=\"token function\">recognizeText<\/span><span class=\"token punctuation\">(<\/span>visionInfo<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>      <span class=\"token comment\">\/\/ 3. \u89e3\u6790\u7ed3\u679c<\/span><br \/>\n      <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>resultText <span class=\"token operator\">&#061;<\/span> result<span class=\"token punctuation\">.<\/span>blocks<span class=\"token punctuation\">.<\/span><span class=\"token function\">map<\/span><span class=\"token punctuation\">(<\/span>b <span class=\"token operator\">&#061;&gt;<\/span> b<span class=\"token punctuation\">.<\/span>value<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">join<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\\\\n&#039;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>resultText<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>resultText <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#039;\u672a\u8bc6\u522b\u5230\u6587\u5b57&#xff0c;\u8bf7\u6362\u4e00\u5f20\u66f4\u6e05\u6670\u7684\u56fe\u7247&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token punctuation\">}<\/span><\/p>\n<p>      pixelMap<span class=\"token punctuation\">.<\/span><span class=\"token function\">release<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n      source<span class=\"token punctuation\">.<\/span><span class=\"token function\">release<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">catch<\/span> <span class=\"token punctuation\">(<\/span>err<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token keyword\">const<\/span> e <span class=\"token operator\">&#061;<\/span> err <span class=\"token keyword\">as<\/span> BusinessError<span class=\"token punctuation\">;<\/span><br \/>\n      <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>resultText <span class=\"token operator\">&#061;<\/span> <span class=\"token template-string\"><span class=\"token template-punctuation string\">&#096;<\/span><span class=\"token string\">\u8bc6\u522b\u5931\u8d25&#xff08;code&#061;<\/span><span class=\"token interpolation\"><span class=\"token interpolation-punctuation punctuation\">${<\/span>e<span class=\"token punctuation\">.<\/span>code<span class=\"token interpolation-punctuation punctuation\">}<\/span><\/span><span class=\"token string\">&#xff09;&#xff0c;\u8bf7\u91cd\u8bd5<\/span><span class=\"token template-punctuation string\">&#096;<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">finally<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>loading <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">false<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><\/p>\n<p>  <span class=\"token function\">build<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">Column<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">{<\/span> space<span class=\"token operator\">:<\/span> <span class=\"token number\">16<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n      <span class=\"token function\">Button<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;\u9009\u62e9\u56fe\u7247\u5e76\u8bc6\u522b&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">onClick<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">pickAndRecognize<\/span><span class=\"token punctuation\">(<\/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 keyword\">this<\/span><span class=\"token punctuation\">.<\/span>loading<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">LoadingProgress<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">width<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">40<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">height<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">40<\/span><span class=\"token punctuation\">)<\/span><br \/>\n      <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">Scroll<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n          <span class=\"token function\">Text<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">.<\/span>resultText<span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token punctuation\">.<\/span><span class=\"token function\">fontSize<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">16<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token punctuation\">.<\/span><span class=\"token function\">copyOption<\/span><span class=\"token punctuation\">(<\/span>CopyOptions<span class=\"token punctuation\">.<\/span>InApp<span class=\"token punctuation\">)<\/span> <span class=\"token comment\">\/\/ \u8bc6\u522b\u7ed3\u679c\u53ef\u76f4\u63a5\u957f\u6309\u590d\u5236<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">layoutWeight<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">.<\/span><span class=\"token function\">padding<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">16<\/span><span class=\"token punctuation\">)<\/span><br \/>\n      <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span><span class=\"token function\">width<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;100%&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span><span class=\"token function\">height<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#039;100%&#039;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">.<\/span><span class=\"token function\">padding<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">16<\/span><span class=\"token punctuation\">)<\/span><br \/>\n  <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u4e24\u4e2a\u5de5\u7a0b\u7ec6\u8282&#xff1a;loading \u6001\u8ba9\u8bc6\u522b\u671f\u95f4 UI \u6709\u660e\u786e\u53cd\u9988&#xff08;\u7aef\u4fa7\u63a8\u7406\u867d\u5feb&#xff0c;\u5927\u56fe\u4e5f\u8981\u51e0\u767e ms&#xff09;&#xff1b;pixelMap \u548c ImageSource \u7528\u5b8c\u5373 release()&#xff0c;\u5217\u8868\u9875\u53cd\u590d\u8bc6\u522b\u7684\u573a\u666f\u6f0f\u91ca\u653e\u4f1a\u6301\u7eed\u6da8\u5185\u5b58\u3002<\/p>\n<h3>\u8e29\u5751\u4e0e\u8c03\u4f18<\/h3>\n<p>\u9519\u8bef\u7801\u8981\u9010\u4e2a\u515c\u3002recognizeText \u7684 Promise \u91cc\u4f1a\u629b\u4e1a\u52a1\u9519\u8bef&#xff0c;\u5b9e\u9645\u9047\u5230\u6700\u591a\u7684\u662f\u8fd9\u51e0\u4e2a&#xff1a;<\/p>\n<ul>\n<li>200 \u8bc6\u522b\u8d85\u65f6\u2014\u2014\u5927\u56fe\u6216\u540e\u53f0\u8d1f\u8f7d\u65f6\u5076\u53d1&#xff0c;\u63d0\u793a\u91cd\u8bd5\u5373\u53ef&#xff1b;<\/li>\n<li>401 \u53c2\u6570\u6821\u9a8c\u5931\u8d25\u2014\u2014\u4e5d\u6210\u662f PixelMap \u65e0\u6548\u6216\u5df2 release&#xff1b;<\/li>\n<li>1001400001 \u8fd0\u884c\u5931\u8d25\u2014\u2014\u53ef\u91cd\u8bd5\u4e00\u6b21&#xff1b;<\/li>\n<li>1001400002 \u670d\u52a1\u5f02\u5e38\u2014\u2014\u5f15\u5bfc\u91cd\u542f\u5e94\u7528\u3002<\/li>\n<\/ul>\n<p>\u8bc6\u522b\u6548\u679c\u5dee\u7684\u6392\u67e5\u987a\u5e8f\u3002\u7aef\u4fa7\u6a21\u578b\u5bf9&#034;\u6e05\u6670\u3001\u6b63\u5bf9\u3001\u80cc\u666f\u7b80\u5355&#034;\u7684\u5370\u5237\u4f53\u6548\u679c\u6700\u597d&#xff0c;\u6548\u679c\u5dee\u65f6\u6309\u8fd9\u4e2a\u987a\u5e8f\u67e5&#xff1a;<\/p>\n<li>\u56fe\u7247\u662f\u5426\u8fc7\u5c0f\u6216\u8fc7\u6a21\u7cca&#xff08;\u5148\u770b\u5206\u8fa8\u7387&#xff0c;\u4f4e\u4e8e\u51e0\u5341\u50cf\u7d20\u9ad8\u7684\u6587\u672c\u884c\u57fa\u672c\u6ca1\u620f&#xff09;&#xff1b;<\/li>\n<li>\u6587\u5b57\u662f\u5426\u503e\u659c\u4e25\u91cd\u2014\u2014\u65b9\u5411\u68c0\u6d4b\u53ea\u7ba1 90\u00b0\/180\u00b0 \u7ea7\u522b\u7684\u65cb\u8f6c&#xff0c;\u4e0d\u7ba1\u5c0f\u89d2\u5ea6\u7ea0\u504f&#xff1b;<\/li>\n<li>\u80cc\u666f\u662f\u5426\u6742\u4e71\u3001\u6587\u5b57\u662f\u5426\u88ab\u906e\u6321\u3002<\/li>\n<p>\u624b\u5199\u4f53\u548c\u827a\u672f\u5b57\u662f\u80fd\u529b\u8fb9\u754c&#xff0c;\u9700\u8981\u8fd9\u7c7b\u8bc6\u522b\u65f6\u518d\u8003\u8651\u4e91\u7aef\u65b9\u6848&#xff0c;\u7aef\u4fa7\u522b\u786c\u625b\u3002<\/p>\n<h3>\u5c0f\u7ed3<\/h3>\n<p>Core Vision Kit \u7684 textRecognition \u7528\u6781\u4f4e\u7684\u96c6\u6210\u6210\u672c\u6362\u6765\u4e86\u514d\u8d39\u3001\u79bb\u7ebf\u3001\u9690\u79c1\u5b89\u5168\u7684\u7aef\u4fa7 OCR&#xff1a;\u4e00\u6b21 Promise \u8c03\u7528&#xff0c;\u62ff\u5230\u5e26\u5750\u6807\u7684\u4e09\u7ea7\u6587\u672c\u6811\u3002\u5b83\u9002\u5408\u5370\u5237\u4f53\u8bc6\u522b\u7684\u4e3b\u6d41\u573a\u666f&#xff08;\u7968\u636e\u3001\u540d\u7247\u3001\u622a\u56fe\u53d6\u8bcd\u3001\u65e0\u7f51\u5f55\u5165&#xff09;&#xff0c;\u8c03\u7528\u8303\u5f0f\u4e5f\u662f Core Vision Kit 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