{"id":822,"date":"2022-04-14T16:09:20","date_gmt":"2022-04-14T08:09:20","guid":{"rendered":"https:\/\/swordofmorning.com\/?p=822"},"modified":"2025-10-09T13:55:35","modified_gmt":"2025-10-09T05:55:35","slug":"yuv-color-space","status":"publish","type":"post","link":"https:\/\/swordofmorning.com\/index.php\/2022\/04\/14\/yuv-color-space\/","title":{"rendered":"YUV\u8272\u5f69\u7a7a\u95f4"},"content":{"rendered":"<p><div class=\"has-toc have-toc\"><\/div><\/p>\n<h1 >YUV\u8272\u5f69\u7a7a\u95f4<\/h1>\n<h2 >\u4e00\u3001RGB\u548cYUV<\/h2>\n<p>&emsp;&emsp;\u6211\u4eec\u719f\u6089\u7684RGB\u8272\u5f69\u7a7a\u95f4\u6709\u7740\u4e09\u4e2aA\u901a\u9053\uff0c\u4ee58bit\u4e3a\u4f8b\uff0c\u901a\u8fc7{ R[0, 255]\uff0c G[0, 255], B[0, 255] }\u7684\u7ec4\u5408\uff0c\u6211\u4eec\u5f97\u5230\u4e8616M\u91cf\u7ea7\u7684\u8272\u5f69\u7ec4\u5408\u3002\u5bf9\u4e8eRGB\u6765\u8bf4\uff0c\u6bcf\u4e00\u4e2a\u901a\u9053\u7684\u5206\u91cf\u90fd\u4e0d\u80fd\u4e22\u5f03\u3002\u5728\u56fe\u5f62\u5b66\u9886\u57df\uff0c\u56e0\u4e3aRGB\u6a21\u578b\u7684\u539f\u7406\u4e0e\u4eba\u773c\u89c6\u89c9\u7cfb\u7edf\u539f\u7406\u76f8\u4f3c\uff0c\u6240\u4ee5\u5f97\u5230\u4e86\u5e7f\u6cdb\u5e94\u7528\u3002\u4e0b\u9762\u6211\u4eec\u7b80\u5355\u56de\u987e\u4e00\u4e0b\u7070\u5ea6\u56fe\u4e0eRGB\u7684\u7ed3\u6784\uff1a<\/p>\n<pre><code class='language-cpp' lang='cpp'>\/\/ \u7070\u5ea6\u56fe\nMat = {\n    11, 12, \n    21, 22\n};\n\n\/\/ RGB\nMat = {\n    { 111, 112, 113 }, { 121, 122, 123 },\n    { 211, 212, 213 }, { 221, 222, 223 }\n};\n<\/code><\/pre>\n<p>&emsp;&emsp;\u800cYUV\u5219\u662f\u4e00\u79cd\u7528\u4e8e\u89c6\u9891\u3001\u56fe\u7247\u7f16\u7801\u5904\u7406\u7684\u65b9\u6cd5\u3002YUV\u662f\u7f16\u8bd1true-color\u989c\u8272\u7a7a\u95f4\uff08color space\uff09\u7684\u79cd\u7c7b\uff0cY&#39;UV, YUV, YCbCr\uff0cYPbPr\u7b49\u4e13\u6709\u540d\u8bcd\u90fd\u53ef\u4ee5\u79f0\u4e3aYUV\uff0c\u5f7c\u6b64\u6709\u91cd\u53e0\u3002\u201cY\u201d\u8868\u793a\u660e\u4eae\u5ea6\uff08Luminance\u3001Luma\uff09\uff0c\u201cU\u201d\u548c\u201cV\u201d\u5219\u662f\u8272\u5ea6\u3001\u6d53\u5ea6\uff08Chrominance\u3001Chroma\uff09\uff0cY\u2032UV, YUV, YCbCr, YPbPr\u6240\u6307\u6d89\u7684\u8303\u56f4\uff0c\u5e38\u6709\u6df7\u6dc6\u6216\u91cd\u53e0\u7684\u60c5\u51b5\u3002\u4ece\u5386\u53f2\u7684\u6f14\u53d8\u6765\u8bf4\uff0c\u5176\u4e2dYUV\u548cY&#39;UV\u901a\u5e38\u7528\u6765\u7f16\u7801\u7535\u89c6\u7684\u6a21\u62df\u4fe1\u53f7\uff0c\u800cYCbCr\u5219\u662f\u7528\u6765\u63cf\u8ff0\u6570\u5b57\u7684\u5f71\u50cf\u4fe1\u53f7\uff0c\u9002\u5408\u89c6\u9891\u4e0e\u56fe\u7247\u538b\u7f29\u4ee5\u53ca\u4f20\u8f93\uff0c\u4f8b\u5982MPEG\u3001JPEG\u3002 \u4f46\u5728\u73b0\u4eca\uff0cYUV\u901a\u5e38\u5df2\u7ecf\u5728\u7535\u8111\u7cfb\u7edf\u4e0a\u5e7f\u6cdb\u4f7f\u7528\u3002<\/p>\n<figure style=\"width: 305px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\"   class=\"lazyload\" data-src=\"https:\/\/cdn.swordofmorning.com\/SwordofMorning\/Article%20Images\/Vision\/03_YUV\/yuv_introduce_00.png\" src=\"https:\/\/cdn.jsdelivr.net\/gh\/moezx\/cdn@3.0.2\/img\/svg\/loader\/trans.ajax-spinner-preloader.svg\" onerror=\"imgError(this)\"  width=\"305\" height=\"305\" alt=\"\u56fe0\" class=\"size-full\" \/ ><figcaption class=\"wp-caption-text\"><noscript><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cdn.swordofmorning.com\/SwordofMorning\/Article%20Images\/Vision\/03_YUV\/yuv_introduce_00.png\" width=\"305\" height=\"305\" alt=\"\u56fe0\" class=\"size-full\" \/><\/noscript> \u56fe0\uff1aYUV\u8272\u5f69\u7a7a\u95f4<\/figcaption><\/figure>\n<p>&emsp;&emsp;\u548cRGB\u4e0d\u540c\u7684\u662f\uff0cYUV\u4e2d\u7684UV\u901a\u9053\u662f\u53ef\u4ee5\u4e22\u5f03\u7684\uff0c\u5728\u4e22\u5f03UV\u4e4b\u540e\uff0cY\u5c31\u4e0e\u7070\u5ea6\u56fe\u7684\u7070\u9636\u503c\u76f8\u7b49\u3002\u901a\u8fc7\u4e22\u6389\u90e8\u5206\u7684UV\u91c7\u6837\u503c\uff0c\u5c31\u53ef\u4ee5\u505a\u5230\u4f20\u8f93\u5e26\u5bbd\u5c0f\u4e8e24\u4f4d\uff0c\u4e0b\u9762\u4ecb\u7ecd\u51e0\u79cd\u5e38\u89c1\u7684YUV\u683c\u5f0f\u3002<\/p>\n<h2 >\u4e8c\u3001YUV\u91c7\u6837\u683c\u5f0f<\/h2>\n<h3 >2.1 YUV 4:4:4\u91c7\u6837<\/h3>\n<p>&emsp;&emsp;YUV 4:4:4\u91c7\u6837\uff0c\u610f\u5473\u7740Y\u3001U\u3001V\u4e09\u4e2a\u5206\u91cf\u7684\u91c7\u6837\u6bd4\u4f8b\u76f8\u540c\uff0c\u56e0\u6b64\u5728\u751f\u6210\u7684\u56fe\u50cf\u91cc\uff0c\u6bcf\u4e2a\u50cf\u7d20\u7684\u4e09\u4e2a\u5206\u91cf\u4fe1\u606f\u5b8c\u6574\uff0c\u90fd\u662f8\u4f4d\u3002<\/p>\n<figure style=\"width: 170px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\"   class=\"lazyload\" data-src=\"https:\/\/cdn.swordofmorning.com\/SwordofMorning\/Article%20Images\/Vision\/03_YUV\/yuv-444-format.webp\" src=\"https:\/\/cdn.jsdelivr.net\/gh\/moezx\/cdn@3.0.2\/img\/svg\/loader\/trans.ajax-spinner-preloader.svg\" onerror=\"imgError(this)\"  width=\"170\" height=\"170\" alt=\"\u56fe1\" class=\"size-full\" \/ ><figcaption class=\"wp-caption-text\"><noscript><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cdn.swordofmorning.com\/SwordofMorning\/Article%20Images\/Vision\/03_YUV\/yuv-444-format.webp\" width=\"170\" height=\"170\" alt=\"\u56fe1\" class=\"size-full\" \/><\/noscript> \u56fe1\uff1aYUV-444<\/figcaption><\/figure>\n<p>&emsp;&emsp;\u5176\u4e2dY\u5206\u91cf\u7528\u53c9\u8868\u793a\uff0cUV\u5206\u91cf\u7528\u5706\u5708\u8868\u793a\u3002\u4e0b\u9762\u6765\u770b\u4e00\u4e0b\u7f16\u7801\u65b9\u5f0f\uff1a<\/p>\n<pre><code class='language-cpp' lang='cpp'>\/\/ \u5047\u8bbe\u56fe\u50cf\u50cf\u7d20\u4e3a\uff1a\n    Mat = {\n        { Y0, U0, V0 }, { Y1, U1, v1 },\n        { Y2, U2, V2 }, { Y3, U3, V3 }\n    };\n\n\/\/ \u90a3\u4e48\u91c7\u6837\u7684\u7801\u6d41\u4e3a\uff1a\n    \/\/ Y U V \u4ea4\u66ff\n    Stream = { Y0 U0 V0 Y1 U1 V1 Y2 U2 V2 Y3 U3 V3 };\n\n\/\/ \u6700\u540e\u6620\u5c04\u51fa\u7684\u50cf\u7d20\u70b9\u4e3a\uff1a\n    Mat = {\n        { Y0, U0, V0 }, { Y1, U1, v1 },\n        { Y2, U2, V2 }, { Y3, U3, V3 }\n    };\n<\/code><\/pre>\n<h3 >2.2 YUV 4:4:2\u91c7\u6837<\/h3>\n<p>&emsp;&emsp;YUV 4:2:2\u91c7\u6837\uff0c\u610f\u5473\u7740UV\u5206\u91cf\u662fY\u5206\u91cf\u91c7\u6837\u7684\u4e00\u534a\uff0cY\u5206\u91cf\u548cUV\u5206\u91cf\u6309\u71672 : 1\u7684\u6bd4\u4f8b\u91c7\u6837\u3002\u5982\u679c\u6c34\u5e73\u65b9\u5411\u670910\u4e2a\u50cf\u7d20\u70b9\uff0c\u90a3\u4e48\u91c7\u6837\u4e8610\u4e2aY\u5206\u91cf\uff0c\u800c\u53ea\u91c7\u6837\u4e865\u4e2aUV\u5206\u91cf\u3002<\/p>\n<figure style=\"width: 170px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\"   class=\"lazyload\" data-src=\"https:\/\/cdn.swordofmorning.com\/SwordofMorning\/Article%20Images\/Vision\/03_YUV\/yuv-422-format.webp\" src=\"https:\/\/cdn.jsdelivr.net\/gh\/moezx\/cdn@3.0.2\/img\/svg\/loader\/trans.ajax-spinner-preloader.svg\" onerror=\"imgError(this)\"  width=\"170\" height=\"170\" alt=\"\u56fe2\" class=\"size-full\" \/ ><figcaption class=\"wp-caption-text\"><noscript><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cdn.swordofmorning.com\/SwordofMorning\/Article%20Images\/Vision\/03_YUV\/yuv-422-format.webp\" width=\"170\" height=\"170\" alt=\"\u56fe2\" class=\"size-full\" \/><\/noscript> \u56fe2\uff1aYUV-422<\/figcaption><\/figure>\n<p>&emsp;&emsp;\u5176\u4e2dY\u5206\u91cf\u7528\u53c9\u8868\u793a\uff0cUV\u5206\u91cf\u7528\u5706\u5708\u8868\u793a\u3002\u4e0b\u9762\u6765\u770b\u4e00\u4e0b\u7f16\u7801\u65b9\u5f0f\uff1a<\/p>\n<pre><code class='language-cpp' lang='cpp'>\/\/ \u5047\u8bbe\u56fe\u50cf\u50cf\u7d20\u4e3a\uff1a\n    Mat = {\n        { Y0, U0, V0 }, { Y1, U1, v1 },\n        { Y2, U2, V2 }, { Y3, U3, V3 }\n    };\n\n\/\/ \u90a3\u4e48\u91c7\u6837\u7684\u7801\u6d41\u4e3a\uff1a\n    \/\/ Y U Y V\n    Stream = { Y0 U0 Y1 V1 }, { Y2 U2 Y3 V3 };\n\n\/\/ \u6700\u540e\u6620\u5c04\u51fa\u7684\u50cf\u7d20\u70b9\u4e3a\uff1a\n    Mat = {\n        { Y0, U0, V1 }, { Y1, U0, v1 },\n        { Y2, U2, V3 }, { Y3, U2, V3 }\n    };\n<\/code><\/pre>\n<h3 >2.3 YUV 4:2:0\u91c7\u6837<\/h3>\n<p>&emsp;&emsp;YUV 4:2:0\u91c7\u6837\uff0c\u5e76\u4e0d\u662f\u6307\u53ea\u91c7\u6837U\u5206\u91cf\u800c\u4e0d\u91c7\u6837V\u5206\u91cf\u3002\u800c\u662f\u6307\uff0c\u5728\u6bcf\u4e00\u884c\u626b\u63cf\u65f6\uff0c\u53ea\u626b\u63cf\u4e00\u79cd\u8272\u5ea6\u5206\u91cf\uff08U\u6216\u8005V\uff09\uff0c\u548cY\u5206\u91cf\u6309\u71672:1\u7684\u65b9\u5f0f\u91c7\u6837\u3002\u6bd4\u5982\uff0c\u7b2c\u4e00\u884c\u626b\u63cf\u65f6\uff0cYU\u6309\u71672:1\u7684\u65b9\u5f0f\u91c7\u6837\uff0c\u90a3\u4e48\u7b2c\u4e8c\u884c\u626b\u63cf\u65f6\uff0cYV\u5206\u91cf\u6309\u71672:1\u7684\u65b9\u5f0f\u91c7\u6837\u3002\u5bf9\u4e8e\u6bcf\u4e2a\u8272\u5ea6\u5206\u91cf\u6765\u8bf4\uff0c\u5b83\u7684\u6c34\u5e73\u65b9\u5411\u548c\u7ad6\u76f4\u65b9\u5411\u7684\u91c7\u6837\u548cY\u5206\u91cf\u76f8\u6bd4\u90fd\u662f2:1\u3002<\/p>\n<figure style=\"width: 170px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\"   class=\"lazyload\" data-src=\"https:\/\/cdn.swordofmorning.com\/SwordofMorning\/Article%20Images\/Vision\/03_YUV\/yuv-420-format.jpeg\" src=\"https:\/\/cdn.jsdelivr.net\/gh\/moezx\/cdn@3.0.2\/img\/svg\/loader\/trans.ajax-spinner-preloader.svg\" onerror=\"imgError(this)\"  width=\"170\" height=\"170\" alt=\"\u56fe3\" class=\"size-full\" \/ ><figcaption class=\"wp-caption-text\"><noscript><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cdn.swordofmorning.com\/SwordofMorning\/Article%20Images\/Vision\/03_YUV\/yuv-420-format.jpeg\" width=\"170\" height=\"170\" alt=\"\u56fe3\" class=\"size-full\" \/><\/noscript> \u56fe3\uff1aYUV-420<\/figcaption><\/figure>\n<p>&emsp;&emsp;\u5176\u4e2dY\u5206\u91cf\u7528\u53c9\u8868\u793a\uff0cUV\u5206\u91cf\u7528\u5706\u5708\u8868\u793a\u3002\u4e0b\u9762\u6765\u770b\u4e00\u4e0b\u7f16\u7801\u65b9\u5f0f\uff1a<\/p>\n<pre><code class='language-cpp' lang='cpp'>\/\/ \u5047\u8bbe\u56fe\u50cf\u50cf\u7d20\u4e3a\uff1a\n    Mat = {\n        { Y0, U0, V0 }, { Y1, U1, v1 }, { Y2, U2, V2 }, { Y3, U3, V3 },\n        { Y4, U4, V4 }, { Y5, U5, V5 }, { Y6, U6, V6 }, { Y7, U7, V7 }\n    };\n\n\/\/ \u90a3\u4e48\u91c7\u6837\u7684\u7801\u6d41\u4e3a\uff1a\n    \/*\n        \u5047\u8bbe\u5947\u6570\u884c\u91c7\u96c6 U\uff0c\u90a3\u4e48\u5076\u6570\u884c\u5c31\u91c7\u96c6 V\n        { Y0 U0 Y1 }, { Y2 U2 Y3 }\n        { Y4 V4 Y5 }, { Y6 V6 Y7 }\n    *\/\n    Stream = { Y0 U0 Y1 }, { Y2 U2 Y3 }, { Y4 V4 Y5 }, { Y6 V6 Y7 }\n\n\/\/ \u6700\u540e\u6620\u5c04\u51fa\u7684\u50cf\u7d20\u70b9\u4e3a\uff1a\n    Mat = {\n        { Y0, U0, V4 }, { Y1, U0, v4 }, { Y2, U2, V6 }, { Y3, U2, V6 },\n        { Y4, U0, V4 }, { Y5, U0, V4 }, { Y6, U2, V6 }, { Y7, U2, V6 }\n    };\n<\/code><\/pre>\n<h2 >\u4e09\u3001\u8272\u5f69\u7a7a\u95f4\u8f6c\u6362<\/h2>\n<h3 >3.1 RGB2YUV<\/h3>\n<div contenteditable=\"true\" spellcheck=\"false\" class=\"mathjax-block md-end-block md-math-block md-rawblock\" id=\"mathjax-n26\" cid=\"n26\" mdtype=\"math_block\" data-math-tag-before=\"0\" data-math-tag-after=\"0\" data-math-labels=\"[]\">\n<div class=\"md-rawblock-container md-math-container\" tabindex=\"-1\"><mjx-container class=\"MathJax\" jax=\"SVG\" display=\"true\" style=\"position: relative;\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"43.025ex\" height=\"8.597ex\" role=\"img\" focusable=\"false\" viewBox=\"0 -2150 19017.2 3800\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" aria-hidden=\"true\" style=\"vertical-align: -3.733ex;\" class=\"in-text-selection\"><defs><path id=\"MJX-2-TEX-I-1D44C\" d=\"M66 637Q54 637 49 637T39 638T32 641T30 647T33 664T42 682Q44 683 56 683Q104 680 165 680Q288 680 306 683H316Q322 677 322 674T320 656Q316 643 310 637H298Q242 637 242 624Q242 619 292 477T343 333L346 336Q350 340 358 349T379 373T411 410T454 461Q546 568 561 587T577 618Q577 634 545 637Q528 637 528 647Q528 649 530 661Q533 676 535 679T549 683Q551 683 578 682T657 680Q684 680 713 681T746 682Q763 682 763 673Q763 669 760 657T755 643Q753 637 734 637Q662 632 617 587Q608 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