{"id":545,"date":"2019-12-11T19:05:32","date_gmt":"2019-12-11T11:05:32","guid":{"rendered":"http:\/\/luodonggan.com\/wordpress\/?p=545"},"modified":"2019-12-11T19:06:44","modified_gmt":"2019-12-11T11:06:44","slug":"%e8%a7%86%e9%a2%91%e6%8a%80%e6%9c%af","status":"publish","type":"post","link":"http:\/\/8.152.216.154:8081\/?p=545","title":{"rendered":"\u89c6\u9891\u6280\u672f"},"content":{"rendered":"

\u4e00\u3001\u4eba\u4e0e\u4e16\u754c\u7684\u4ea4\u4e92<\/h2>\n

\u4ece\u8fdc\u53e4\u65f6\u4ee3\u4eba\u7c7b\u6587\u660e\u8bde\u751f\u4e4b\u65e5\u8d77\uff0c\u4eba\u7c7b\u5c31\u5728\u4eba\u7c7b\u5c31\u5728\u4e0d\u65ad\u4e3a\u9002\u5e94\u73af\u5883\u3001\u6539\u9020\u73af\u5883\u800c\u8270\u82e6\u6597\u4e89\u3002\u5176\u4e2d\u6700\u4e3a\u57fa\u7840\u7684\u524d\u63d0\u5c31\u662f\u5229\u7528\u611f\u5b98\u5bf9\u5916\u754c\u4fe1\u606f\u7684\u83b7\u53d6\u3002\u5229\u7528\u5404\u79cd\u611f\u5b98\uff0c\u4eba\u7c7b\u53ef\u4ee5\u4e0e\u4e16\u754c\u73af\u5883\u8fdb\u884c\u591a\u79cd\u4e0d\u540c\u7684\u4fe1\u606f\u4ea4\u4e92\uff0c\u4f8b\u5982\uff1a<\/p>\n

\u55c5\u89c9\uff1a\u8bc6\u522b\u5404\u79cd\u6c14\u5473\uff0c\u8fa8\u522b\u73af\u5883\u53d8\u5316\u548c\u98df\u7269\u3001\u996e\u6c34\u7684\u8d28\u91cf\u7b49\uff1b
\u542c\u89c9\uff1a\u8bc6\u522b\u540c\u7c7b\u7684\u8054\u7edc\u4fe1\u606f\u548c\u5929\u654c\u7b49\u5371\u9669\u4fe1\u53f7\u7b49
\u5473\u89c9\uff1a\u6311\u9009\u6700\u9002\u5b9c\u7684\u98df\u7269
\u89e6\u89c9\uff1a\u5236\u4f5c\u4e0e\u4f7f\u7528\u5de5\u5177\u65f6\u975e\u5e38\u91cd\u8981<\/p>\n

\u53e6\u5916\uff0c\u6700\u91cd\u8981\u7684\u4e00\u79cd\u81ea\u7136\u5c31\u662f\u89c6\u89c9\u3002\u636e\u7edf\u8ba1\uff0c\u5728\u4eba\u7684\u5404\u79cd\u611f\u5b98\u4e2d\uff0c\u89c6\u89c9\u5360\u636e\u4e86\u8d85\u8fc77\u6210\u7684\u4fe1\u606f\u83b7\u53d6\u91cf\u3002\u800c\u4e14\u89c6\u89c9\u53ef\u4ee5\u4f7f\u4eba\u5bf9\u73af\u5883\u53d8\u5316\u505a\u51fa\u6700\u76f4\u63a5\u7684\u53cd\u6620\u3002<\/p>\n

\u5728\u6587\u660e\u7684\u53d1\u5c55\u8fc7\u7a0b\u4e2d\uff0c\u4eba\u4eec\u4e0d\u6ee1\u8db3\u4e8e\u4ec5\u4ec5\u9760\u7740\u53e3\u8ff0\u8bb0\u5f55\u6240\u770b\u5230\u7684\u5f71\u50cf\uff0c\u800c\u662f\u5e0c\u671b\u80fd\u7528\u66f4\u52a0\u76f4\u89c2\u7684\u5f62\u5f0f\u5c06\u5176\u8bb0\u5f55\u4e0b\u6765\u3002\u7ecf\u8fc7\u4e86\u591a\u5e74\u7684\u53d1\u5c55\uff0c\u7ecf\u8fc7\u591a\u5e74\u7684\u53d1\u5c55\uff0c\u89c6\u9891\u5df2\u7ecf\u6210\u4e3a\u8bb0\u5f55\u548c\u91cd\u73b0\u4fe1\u606f\u6700\u4e3a\u9ad8\u6548\u7684\u65b9\u5f0f\uff0c\u53ef\u4ee5\u5728\u76f8\u5bf9\u5f88\u77ed\u7684\u65f6\u95f4\u5185\u4f20\u9012\u5927\u91cf\u7684\u4fe1\u606f\u3002<\/p>\n

\u89c6\u9891\u901a\u8fc7\u5176\u4e2d\u6bcf\u4e00\u5e27\u7684\u56fe\u50cf\u8868\u8fbe\u4fe1\u606f\uff1b
\u89c6\u9891\u5305\u542b\u7684\u97f3\u9891\u53ef\u63d0\u4f9b\u5927\u91cf\u4fe1\u606f\uff1b
\u89c6\u9891\u901a\u8fc7\u56fe\u50cf\u7684\u8fd0\u52a8\u3001\u573a\u666f\u7684\u53d8\u6362\u63d0\u4f9b\u4fe1\u606f\uff1b<\/p>\n

\u7efc\u4e0a\u6211\u4eec\u53ef\u77e5\uff0c\u89c6\u9891\u4fe1\u606f\u63d0\u4f9b\u4e86\u6700\u4e3a\u63a5\u8fd1\u4eba\u7684\u76f4\u63a5\u4f53\u9a8c\u7684\u4fe1\u606f\u8868\u793a\u65b9\u5f0f\u3002<\/p>\n

<\/p>\n

\u4e8c\u3001\u89c6\u9891\u4fe1\u53f7\u7684\u8868\u793a\u65b9\u6cd5\uff1aRGB\u4e0eYUV<\/h2>\n

\u771f\u5b9e\u4e16\u754c\u4e2d\u7684\u5f71\u50cf\u4e0e\u65e9\u671f\u7684\u89c6\u9891\u5904\u7406\u4e0e\u4f20\u8f93\u7cfb\u7edf\u6240\u5904\u7406\u7684\u90fd\u662f\u6a21\u62df\u4fe1\u53f7\u3002\u7136\u800c\u4e3a\u4e86\u80fd\u9002\u5e94\u73b0\u4ee3\u7684\u8ba1\u7b97\u673a\u3001\u7f51\u7edc\u4f20\u8f93\u4e0e\u6570\u5b57\u89c6\u9891\u5904\u7406\u7cfb\u7edf\uff0c\u6a21\u62df\u7684\u89c6\u9891\u4fe1\u53f7\u5fc5\u987b\u8f6c\u6362\u6210\u6570\u5b57\u683c\u5f0f\u3002<\/p>\n

RGB\u989c\u8272\u7a7a\u95f4<\/h3>\n

\u76ee\u524d\u7684\u663e\u793a\u8bbe\u5907\u5927\u90fd\u662f\u91c7\u7528\u4e86RGB\u8272\u5f69\u7a7a\u95f4\uff0cRGB\u662f\u4ece\u989c\u8272\u7684\u539f\u7406\u6765\u8bbe\u8ba1\u5b9a\u7684\uff0c\u5b83\u7684\u989c\u8272\u6df7\u5408\u65b9\u5f0f\u5c31\u5982\u6709\u7ea2\u3001\u7eff\u3001\u84dd\u4e09\u76cf\u706f\uff0c\u5f53\u5b83\u4eec\u7684\u5149\u76f8\u4e92\u53e0\u5408\u7684\u65f6\u5019\uff0c\u8272\u5f69\u76f8\u6df7\uff0c\u4eae\u5ea6\u7b49\u4e8e\u4e24\u8005\u4eae\u5ea6\u4e4b\u603b\u548c\uff0c\u5373\u52a0\u6cd5\u6df7\u5408\u3002<\/p>\n

\u5c4f\u5e55\u4e0a\u7684\u4e0d\u540c\u989c\u8272\uff0c\u90fd\u7531\u8fd9\u7ea2\u8272\uff0c\u7eff\u8272\uff0c\u84dd\u8272\u4e09\u79cd\u57fa\u672c\u8272\u5149\u6309\u7167\u4e0d\u540c\u7684\u6bd4\u4f8b\uff08\u6743\u91cd\uff09\u6df7\u5408\u800c\u6210\u7684\u3002\u4e00\u7ec4\u7ea2\u8272\u7eff\u8272\u84dd\u8272\u5c31\u662f\u4e00\u4e2a\u6700\u5c0f\u7684\u663e\u793a\u5355\u4f4d\u3002\u5c4f\u5e55\u4e0a\u7684\u4efb\u4f55\u4e00\u4e2a\u989c\u8272\u90fd\u53ef\u4ee5\u7531\u4e00\u7ec4RGB\u503c\u6765\u8bb0\u5f55\u548c\u8868\u8fbe\u3002\u56e0\u6b64\u8fd9\u7ea2\u8272\u7eff\u8272\u84dd\u8272\u53c8\u79f0\u4e3a\u4e09\u539f\u8272\u5149\uff0c\u7528\u82f1\u6587\u8868\u793a\u5c31\u662fR(red)\u3001G(green)\u3001B(blue)\u3002RGB\u7684\u6240\u8c13\u201c\u591a\u5c11\u201d\u5c31\u662f\u6307\u4eae\u5ea6\uff0c\u5e76\u4f7f\u7528\u6574\u6570\u6765\u8868\u793a\u3002\u5728\u75288\u4f4d\u8868\u793a\u65f6\uff0cRGB\u5404\u6709256\u7ea7\u4eae\u5ea6\uff0c\u7528\u6570\u5b57\u91cf\u5316\u8868\u793a\u4e3a\u4ece0\u30011\u30012…\u76f4\u5230255\u3002\u6ce8\u610f\u867d\u7136\u6570\u5b57\u6700\u9ad8\u662f255\uff0c\u4f460\u4e5f\u662f\u6570\u503c\u4e4b\u4e00\uff0c\u56e0\u6b64\u5171256\u7ea7\u3002<\/p>\n

<\/p>\n

<\/figure>\n

<\/p>\n

\u4f7f\u7528\u8fd9\u79cd\u65b9\u5f0f\u8868\u793a\u5f69\u8272\u56fe\u50cf\u7684\u65b9\u5f0f\u4e3aRGB\u989c\u8272\u7a7a\u95f4\u3002RGB\u989c\u8272\u7a7a\u95f4\u5e38\u7528\u4e8e\u663e\u793a\u5668\u7cfb\u7edf\u3002\u901a\u8fc7\u8fd9\u79cd\u5f62\u5f0f\u8868\u793a\u7684\u56fe\u50cf\uff0c\u6bcf\u4e2a\u50cf\u7d20\u7684\u6bcf\u4e00\u4e2a\u989c\u8272\u5206\u91cf\u75281\u4e2a\u5b57\u8282\u8868\u793a\uff0c\u5219\u53ef\u4ee5\u8868\u793a256\u00d7256\u00d7256\u79cd\u4e0d\u540c\u7684\u989c\u8272\u3002\u5728\u5e38\u89c1\u7684\u56fe\u50cf\u683c\u5f0f\u4e2d\uff0c\u5982\u4f4d\u56fe\uff08bmp\uff09\u683c\u5f0f\u4ee5RGB\u5f62\u5f0f\u4fdd\u5b58\u6570\u636e\u3002<\/p>\n

YUV\u989c\u8272\u7a7a\u95f4<\/h3>\n

YUV\u662f\u7f16\u7801true-color\u989c\u8272\u7a7a\u95f4\uff08color space\uff09\u7684\u79cd\u7c7b\uff0cY'UV, YUV, YCbCr<\/a>\uff0cYPbPr<\/a>\u7b49\u4e13\u6709\u540d\u8bcd\u90fd\u53ef\u4ee5\u79f0\u4e3aYUV\uff0c\u5f7c\u6b64\u6709\u91cd\u53e0\u3002<\/p>\n

\u201cY\u201d\u8868\u793a\u660e\u4eae\u5ea6<\/span>\uff08Luminance\u3001Luma\uff09\uff0c\u201cU\u201d\u548c\u201cV\u201d\u5219\u662f\u8272\u5ea6<\/a><\/span>\uff08Chrominance\u3001Chroma\uff09\uff0c\u5305\u542b\u4e86\u8272\u8c03<\/span>\u548c\u9971\u548c\u5ea6<\/span>\u3002\u4e0e\u6211\u4eec\u719f\u77e5\u7684RGB\u7c7b\u4f3c\uff0cYUV\u4e5f\u662f\u4e00\u79cd\u989c\u8272\u7f16\u7801\u65b9\u6cd5\uff0c\u4e3b\u8981\u7528\u4e8e\u7535\u89c6\u7cfb\u7edf\u4ee5\u53ca\u6a21\u62df\u89c6\u9891\u9886\u57df\uff0c\u5b83\u5c06\u4eae\u5ea6\u4fe1\u606f\uff08Y\uff09\u4e0e\u8272\u5f69\u4fe1\u606f\uff08UV\uff09\u5206\u79bb\uff0c\u6ca1\u6709UV\u4fe1\u606f\u4e00\u6837\u53ef\u4ee5\u663e\u793a\u5b8c\u6574\u7684\u56fe\u50cf\uff0c\u53ea\u4e0d\u8fc7\u662f\u9ed1\u767d\u7684\uff0c\u8fd9\u6837\u7684\u8bbe\u8ba1\u5f88\u597d\u5730\u89e3\u51b3\u4e86\u5f69\u8272\u7535\u89c6\u673a\u4e0e\u9ed1\u767d\u7535\u89c6\u7684\u517c\u5bb9\u95ee\u9898\u3002\u5e76\u4e14\uff0cYUV\u4e0d\u50cfRGB\u90a3\u6837\u8981\u6c42\u4e09\u4e2a\u72ec\u7acb\u7684\u89c6\u9891\u4fe1\u53f7\u540c\u65f6\u4f20\u8f93\uff0c\u6240\u4ee5\u7528YUV\u65b9\u5f0f\u4f20\u9001\u5360\u7528\u6781\u5c11\u7684\u9891\u5bbd\u3002<\/p>\n

\u5728\u5b9e\u9645\u7684\u7f16\u89e3\u7801\u7b49\u89c6\u9891\u5904\u7406\u7684\u8fc7\u7a0b\u4e2d\uff0cYUV\u683c\u5f0f\u6bd4RGB\u683c\u5f0f\u66f4\u4e3a\u5e38\u7528\u3002\u5728YUV\u683c\u5f0f\u4e2d\uff0c\u4e00\u4e2a\u50cf\u7d20\u7531\u4eae\u5ea6\u5206\u91cf\u548c\u8272\u5ea6\u5206\u91cf\u8868\u793a\uff0c\u6bcf\u4e00\u4e2a\u50cf\u7d20\u7531\u4e00\u4e2a\u4eae\u5ea6\u5206\u91cfY\u548c\u4e24\u4e2a\u8272\u5ea6\u5206\u91cfU\/V\u7ec4\u6210\u3002\u4eae\u5ea6\u5206\u91cf\u53ef\u4ee5\u4e0e\u8272\u5ea6\u5206\u91cf\u4e00\u4e00\u5bf9\u5e94\uff0c\u4e5f\u53ef\u4ee5\u5bf9\u8272\u5ea6\u5206\u91cf\u8fdb\u884c\u91c7\u6837\uff0c\u5373\u8272\u5ea6\u5206\u91cf\u7684\u603b\u91cf\u5c11\u4e8e\u4eae\u5ea6\u5206\u91cf\u3002<\/p>\n

<\/p>\n

<\/figure>\n

<\/p>\n

YCbCr\u989c\u8272\u7a7a\u95f4<\/h3>\n

YUV\u7ec6\u5206\u7684\u8bdd\u6709Y'UV\uff0cYUV\uff0cYCbCr\uff0cYPbPr\u7b49\u7c7b\u578b\uff0c\u5176\u4e2dYCbCr<\/span>\u4e3b\u8981\u7528\u4e8e\u6570\u5b57\u4fe1\u53f7\u3002<\/p>\n

YCbCr\u662f\u88abITU\u5b9a\u4e49\u5728\u6807\u51c6ITU-R BT.601\uff08\u6807\u6e05SDTV\uff09\uff0cITU-R BT.709\uff08\u9ad8\u6e05HDTV\uff09\uff0cITU-R BT.2020\uff08\u8d85\u9ad8\u6e05\uff09\u4e2d\u7684\u4e00\u79cd\u8272\u5f69\u7a7a\u95f4\u3002<\/p>\n

YCbCr (SDTV\uff09\u662f\u5728\u4e16\u754c\u6570\u5b57\u7ec4\u7ec7\u89c6\u9891\u6807\u51c6\u7814\u5236\u8fc7\u7a0b\u4e2d\u4f5c\u4e3aITU – R BT.601<\/span> \u5efa\u8bae\u7684\u4e00\u90e8\u5206, \u5176\u5b9e\u662fYUV\u7ecf\u8fc7Gamma\u7684\u7ffb\u7248\u3002\u5176\u4e2dY\u4e0eYUV \u4e2d\u7684Y\u542b\u4e49\u4e00\u81f4, Cb , Cr \u540c\u6837\u90fd\u6307\u8272\u5f69, \u53ea\u662f\u5728\u8868\u793a\u65b9\u6cd5\u4e0a\u4e0d\u540c\u800c\u5df2\u3002\u5728YUV \u5bb6\u65cf\u4e2d, YCbCr \u662f\u5728\u8ba1\u7b97\u673a\u7cfb\u7edf\u4e2d\u5e94\u7528\u6700\u591a\u7684\u6210\u5458, \u5176\u5e94\u7528\u9886\u57df\u5f88\u5e7f\u6cdb,JPEG\u3001MPEG\uff0cH264\u5747\u91c7\u7528\u6b64\u683c\u5f0f\u3002<\/p>\n

\u5176\u4e2d\uff0cCr\u53cd\u6620\u4e86RGB\u8f93\u5165\u4fe1\u53f7\u7ea2\u8272\u90e8\u5206\u4e0eRGB\u4fe1\u53f7\u4eae\u5ea6\u503c\u4e4b\u95f4\u7684\u5dee\u5f02\uff0c\u800cCb\u53cd\u6620\u7684\u662fRGB\u8f93\u5165\u4fe1\u53f7\u84dd\u8272\u90e8\u5206\u4e0eRGB\u4fe1\u53f7\u4eae\u5ea6\u503c\u4e4b\u95f4\u7684\u5dee\u5f02\uff0c\u6b64\u5373\u6240\u8c13\u7684\u8272\u5dee\u4fe1\u53f7\u3002<\/p>\n

\u5728\u89c6\u9891\u901a\u4fe1\u7cfb\u7edf\u4e2d\uff08\u7279\u522b\u662f\u89c6\u9891\u7f16\u89e3\u7801\uff09\u7684\u201cYUV\u201d\u56fe\u50cf\u5c31\u662fYCbCr\u3002\u5728\u5e73\u5e38\u7684\u5de5\u4f5c\u4ea4\u6d41\u4e2d\uff0c\u6240\u79f0\u7684YUV\u4e5f\u662fYCbCr\u3002\u4ee5\u4e0b\u7528YUV\u6307\u4ee3YCbCr<\/span><\/p>\n

RGB\u683c\u5f0f\u8f6c\u4e3aYUV\u683c\u5f0f<\/h3>\n

Y'= 0.299*R' + 0.587*G' + 0.114*B'
U'= -0.147*R' – 0.289*G' + 0.436*B' = 0.492*(B'- Y')
V'= 0.615*R' – 0.515*G' – 0.100*B' = 0.877*(R'- Y')<\/p>\n

<\/p>\n

<\/figure>\n

<\/p>\n

YUV\u683c\u5f0f\u8f6c\u4e3aRGB\u683c\u5f0f<\/h3>\n

R' = Y' + 1.140*V'
G' = Y' – 0.394*U' – 0.581*V'
B' = Y' + 2.032*U'<\/p>\n

<\/p>\n

<\/figure>\n

<\/p>\n

RGB\u683c\u5f0f\u8f6c\u4e3aYCbCr\u683c\u5f0f<\/h3>\n

\u6309ITU-R BT.601\u6807\u51c6\u3002(\u8fd9\u4e2a\u516c\u5f0f\u5e94\u7528\u6700\u5e7f\u6cdb)
Y = ( ( 66 * R + 129 * G + 25 * B + 128) >> 8) + 16
Cb = ( ( -38 * R – 74 * G + 112 * B + 128) >> 8) + 128
Cr = ( ( 112 * R – 94 * G – 18 * B + 128) >> 8) + 128<\/p>\n

<\/p>\n

<\/figure>\n

<\/p>\n

\u6309ITU-R BT.709\u6807\u51c6\u3002<\/p>\n

Y = 0.183R + 0.614G + 0.062B + 16
Cb = -0.101R – 0.339G + 0.439B + 128
Cr = 0.439R – 0.399G – 0.040B + 128<\/p>\n

<\/p>\n

<\/figure>\n

<\/p>\n

\u6309JPEG\u7684\u5168\u8303\u56f4\u53d6\u503c\u683c\u5f0f
Y = 0.299R + 0.587G + 0.144B + 0
Cb = -0.169R – 0.331G + 0.500B + 128
Cr = 0.500R – 0.419G – 0.081B + 128<\/p>\n

<\/p>\n

<\/figure>\n

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YCbCr\u683c\u5f0f\u8f6c\u4e3aRGB\u683c\u5f0f<\/h3>\n

R' = 1.164*(Y\u2019-16) + 1.596*(Cr'-128)
G' = 1.164*(Y\u2019-16) – 0.813*(Cr'-128) -0.392*(Cb'-128)
B' = 1.164*(Y\u2019-16) + 2.017*(Cb'-128)<\/p>\n

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YUV\u7684\u8272\u5ea6\u91c7\u6837<\/h3>\n

\u5728YUV\u4e2d\u4e4b\u6240\u4ee5\u91c7\u7528\u8fd9\u6837\u7684\u65b9\u5f0f\uff0c\u4e3b\u8981\u662f\u56e0\u4e3a\u4eba\u7684\u611f\u5b98\u5bf9\u4eae\u5ea6\u4fe1\u606f\u7684\u654f\u611f\u5ea6\u8fdc\u9ad8\u4e8e\u5bf9\u8272\u5ea6\u4fe1\u606f\u3002\u56e0\u6b64\u76f8\u5bf9\u4e8e\u5176\u4ed6\u50cf\u7d20\u683c\u5f0f\uff0cYUV\u7684\u6700\u5927\u4f18\u52bf\u662f\u53ef\u4ee5\u9002\u5f53\u964d\u4f4e\u8272\u5ea6\u5206\u91cf\u7684\u91c7\u6837\u7387\uff0c\u5e76\u4fdd\u8bc1\u4e0d\u5bf9\u56fe\u50cf\u9020\u6210\u592a\u5927\u5f71\u54cd\u3002\u800c\u4e14\uff0c\u4f7f\u7528\u8fd9\u79cd\u65b9\u5f0f\u8fd8\u53ef\u4ee5\u517c\u5bb9\u9ed1\u767d\u548c\u5f69\u8272\u663e\u793a\u8bbe\u5907\u3002\u5bf9\u4e8e\u9ed1\u767d\u663e\u793a\u8bbe\u5907\uff0c\u53ea\u9700\u8981\u53bb\u9664\u8272\u5ea6\u5206\u91cf\uff0c\u53ea\u663e\u793a\u4eae\u5ea6\u5206\u91cf\u5373\u53ef\u3002<\/p>\n

\u5728YUV\u4e2d\u5e38\u89c1\u7684\u8272\u5ea6\u91c7\u6837\u65b9\u5f0f\u67094:4:4\u30014:2:2\u548c4:2:0\u7b49\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n

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YUV\u7684\u5b58\u50a8\u683c\u5f0f<\/h3>\n

YUV\u683c\u5f0f\u6709\u4e09\u5927\u7c7b\uff1aplanar\uff0cpacked\uff0csemi-planar\u3002<\/p>\n

\u5bf9\u4e8eplanar\u7684YUV\u683c\u5f0f\uff0c\u5148\u8fde\u7eed\u5b58\u50a8\u6240\u6709\u50cf\u7d20\u70b9\u7684Y\uff0c\u7d27\u63a5\u7740\u5b58\u50a8\u6240\u6709\u50cf\u7d20\u70b9\u7684U\uff0c\u968f\u540e\u662f\u6240\u6709\u50cf\u7d20\u70b9\u7684V\u3002<\/p>\n

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\u5bf9\u4e8epacked\u7684YUV\u683c\u5f0f\uff0c\u6bcf\u4e2a\u50cf\u7d20\u70b9\u7684Y,U,V\u662f\u8fde\u7eed\u4ea4\u53c9\u5b58\u50a8\u7684\u3002<\/p>\n

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\u5bf9\u4e8esemi-planar\u7684YUV\u683c\u5f0f\uff0c\u5148\u8fde\u7eed\u5b58\u50a8\u6240\u6709\u50cf\u7d20\u70b9\u7684Y\uff0c\u7d27\u63a5\u7740\u8fde\u7eed\u4ea4\u53c9\u5b58\u50a8\u6240\u6709\u50cf\u7d20\u70b9\u7684U,V\u3002<\/p>\n

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ITU-R Recommendation BT.2020<\/h3>\n

2012\u5e74\u4e0b\u534a\u5e74\uff0c\u56fd\u9645\u7535\u4fe1\u8054\u76df\u65e0\u7ebf\u7535\u901a\u4fe1\u90e8\u95e8(ITU-R)\u9881\u5e03\u4e86\u9762\u5411\u65b0\u4e00\u4ee3\u8d85\u9ad8\u6e05UHD(Ultra-high definition)\u89c6\u9891\u5236\u4f5c\u4e0e\u663e\u793a\u7cfb\u7edf\u7684BT.2020\u6807\u51c6\uff0c\u91cd\u65b0\u5b9a\u4e49\u4e86\u7535\u89c6\u5e7f\u64ad\u4e0e\u6d88\u8d39\u7535\u5b50\u9886\u57df\u5173\u4e8e\u8d85\u9ad8\u6e05\u89c6\u9891\u663e\u793a\u7684\u5404\u9879\u53c2\u6570\u6307\u6807\uff0c\u4fc3\u8fdb4K\u8d85\u9ad8\u6e05\u5bb6\u7528\u663e\u793a\u8bbe\u5907\u8fdb\u4e00\u6b65\u8d70\u5411\u89c4\u8303\u5316\u3002\u5176\u4e2d\u6700\u4e3a\u5173\u952e\u7684\u662f\uff0cBT.2020\u6807\u51c6\u6307\u51faUHD\u8d85\u9ad8\u6e05\u89c6\u9891\u663e\u793a\u7cfb\u7edf\u5305\u62ec4K\u4e0e8K\u4e24\u4e2a\u9636\u6bb5\uff0c\u5176\u4e2d4K\u7684\u7269\u7406\u5206\u8fa8\u7387\u4e3a3840\u00d72160\uff0c\u800c8K\u5219\u4e3a7680\u00d74320\u3002\u4e4b\u6240\u4ee5\u8d85\u9ad8\u6e05\u89c6\u9891\u663e\u793a\u7cfb\u7edf\u4f1a\u6709\u4e24\u4e2a\u9636\u6bb5\uff0c\u5b9e\u9645\u4e0a\u662f\u56e0\u4e3a\u5168\u7403\u5404\u4e2a\u5730\u533a\u8d85\u9ad8\u6e05\u89c6\u9891\u663e\u793a\u7cfb\u7edf\u53d1\u5c55\u5dee\u5f02\u6027\u6240\u9020\u6210\u7684\uff0c\u4f8b\u5982\u5728\u7535\u89c6\u5e7f\u64ad\u9886\u57df\u6280\u672f\u9886\u5148\u7684\u65e5\u672c\u5c31\u76f4\u63a5\u53d1\u5c558K\u7535\u89c6\u5e7f\u64ad\u6280\u672f\uff0c\u907f\u514d\u75314K\u8fc7\u6e21\u52308K\u53ef\u80fd\u51fa\u73b0\u7684\u6280\u672f\u6027\u969c\u788d\u3002\u800c\u5728\u4e16\u754c\u7684\u5176\u4ed6\u5730\u533a\uff0c\u591a\u6570\u8fd8\u662f\u4ee54K\u6280\u672f\u4f5c\u4e3a\u4e0b\u4e00\u4ee3\u7684\u7535\u89c6\u5e7f\u64ad\u53d1\u5c55\u6807\u51c6\u3002<\/p>\n

BT.2020\u6807\u51c6\u7684\u91cd\u8981\u6027\u662f\u6bcb\u5eb8\u7f6e\u7591\u7684\uff0c\u6b63\u5982BT.709\u5bf9\u4e8e\u9ad8\u6e05\u89c6\u9891\u4f20\u8f93\u4e0e\u9ad8\u6e05\u663e\u793a\u8bbe\u5907\u5236\u9020\u65b9\u9762\u8d77\u5230\u4e86\u5f15\u5bfc\u6027\u4f5c\u7528\uff0cBT.2020\u6807\u51c6\u540c\u6837\u4e5f\u6df1\u523b\u5730\u5f71\u54cd\u7740\u6d88\u8d39\u9886\u57df\u8d85\u9ad8\u6e05\u663e\u793a\u8bbe\u5907\u7684\u8bbe\u8ba1\u4e0e\u5236\u9020\uff0c\u5c24\u5176\u57284K\u5e73\u677f\u7535\u89c6\u65b9\u9762\u66f4\u4e3a\u7a81\u51fa\u3002\u4f8b\u5982\u76ee\u524d\u7edd\u5927\u90e8\u5206\u76844K\u5e73\u677f\u7535\u89c6\u7684\u7269\u7406\u5206\u8fa8\u7387\u90fd\u662f\u91c7\u7528BT.2020\u6807\u51c6\u76843840\u00d72160\uff0c\u800c\u4e0d\u662fDCI\u6570\u5b57\u7535\u5f71\u6807\u51c6\u76844096\u00d72160\u3002\u4f46\uff0cBT.2020\u6807\u51c6\u7edd\u4e0d\u4ec5\u4ec5\u5728\u5206\u8fa8\u7387\u65b9\u9762\u6709\u6240\u63d0\u5347\uff0c\u5728\u8272\u5f69\u548c\u5237\u65b0\u9891\u7387\u548c\u4fe1\u53f7\u683c\u5f0f\u4e0e\u5206\u6790\u7b49\u65b9\u9762\u4e5f\u8fdb\u884c\u4e86\u76f8\u5173\u7684\u89c4\u5b9a\u3002<\/p>\n

4K\u7535\u89c6\u663e\u793a\u6807\u51c6BT.2020\u5728\u8272\u5f69\u65b9\u9762\u7684\u63d0\u5347\uff1aBT.2020\u6807\u51c6\u76f8\u5bf9\u4e8eBT.709\u6807\u51c6\uff0c\u5927\u5e45\u5ea6\u63d0\u5347\u4e86\u89c6\u9891\u4fe1\u53f7\u7684\u6027\u80fd\u89c4\u8303\u3002\u4f8b\u5982\u8272\u5f69\u6df1\u5ea6\u65b9\u9762\uff0c\u5c31\u7531BT.709<\/span>\u6807\u51c6\u76848bit\u63d0\u5347\u81f310bit\u621612bit\uff0c\u5176\u4e2d10bit\u9488\u5bf9\u7684\u662f4K<\/span>\u7cfb\u7edf\uff0c12bit\u5219\u9488\u5bf98K<\/span>\u7cfb\u7edf\u3002\u8fd9\u4e00\u63d0\u5347\u5bf9\u4e8e\u6574\u4e2a\u5f71\u50cf\u5728\u8272\u5f69\u5c42\u6b21\u4e0e\u8fc7\u6e21\u65b9\u9762\u7684\u589e\u5f3a\u8d77\u5230\u4e86\u5173\u952e\u7684\u4f5c\u7528\u3002\u800c\u8272\u57df\u8303\u56f4\u7684\u9762\u79ef\u4e5f\u8fdc\u8fdc\u5927\u4e8eBT.709\u6807\u51c6\uff0c\u80fd\u591f\u663e\u793a\u66f4\u52a0\u4e30\u5bcc\u7684\u8272\u5f69\uff0c\u53ea\u662f\u76f8\u5bf9\u5e94\u6765\u8bf4\uff0c\u8d8a\u5e7f\u7684\u8272\u57df\u5bf9\u4e8e\u663e\u793a\u8bbe\u5907\u7684\u6027\u80fd\u8981\u6c42\u5c31\u8d8a\u9ad8\uff0c\u6839\u636e\u76ee\u524d4K\u8d85\u9ad8\u6e05\u6295\u5f71\u673a\u7684\u60c5\u51b5\uff0c\u5f80\u5f80\u9700\u8981\u91c7\u7528\u65b0\u4e00\u4ee3\u7684\u6fc0\u5149\u6216LED\u56fa\u6001\u5149\u6e90\u7684\u673a\u578b\u624d\u80fd\u8fbe\u5230\u3002<\/p>\n

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\u4e09\u3001\u89c6\u9891\u538b\u7f29\u7f16\u7801<\/h2>\n

\u7f16\u7801\u8fd9\u4e00\u6982\u5ff5\u5728\u901a\u4fe1\u4e0e\u4fe1\u606f\u5904\u7406\u9886\u57df\u4e2d\u5e7f\u6cdb\u4f7f\u7528\uff0c\u5176\u57fa\u672c\u539f\u7406\u662f\u5c06\u4fe1\u606f\u6309\u7167\u4e00\u5b9a\u89c4\u5219\u4f7f\u7528\u67d0\u79cd\u5f62\u5f0f\u7684\u7801\u6d41\u8868\u793a\u4e0e\u4f20\u8f93\u3002\u5e38\u7528\u7684\u9700\u8981\u7f16\u7801\u7684\u4fe1\u606f\u4e3b\u8981\u6709\uff1a\u6587\u5b57\u3001\u8bed\u97f3\u3001\u89c6\u9891\u548c\u63a7\u5236\u4fe1\u606f\u7b49\u3002<\/p>\n

1. \u4e3a\u4ec0\u4e48\u9700\u8981\u5bf9\u89c6\u9891\u7f16\u7801<\/span><\/p>\n

\u5bf9\u4e8e\u89c6\u9891\u6570\u636e\u800c\u8a00\uff0c\u89c6\u9891\u7f16\u7801\u7684\u6700\u4e3b\u8981\u76ee\u7684\u662f\u6570\u636e\u538b\u7f29\u3002\u8fd9\u662f\u56e0\u4e3a\u52a8\u6001\u56fe\u50cf\u7684\u50cf\u7d20\u5f62\u5f0f\u8868\u793a\u6570\u636e\u91cf\u6781\u4e3a\u5de8\u5927\uff0c\u5b58\u50a8\u7a7a\u95f4\u548c\u4f20\u8f93\u5e26\u5bbd\u5b8c\u5168\u65e0\u6cd5\u6ee1\u8db3\u4fdd\u5b58\u548c\u4f20\u8f93\u7684\u9700\u6c42\u3002\u4f8b\u5982\uff0c\u56fe\u50cf\u7684\u6bcf\u4e2a\u50cf\u7d20\u7684\u4e09\u4e2a\u989c\u8272\u5206\u91cfRGB\u5404\u9700\u8981\u4e00\u4e2a\u5b57\u8282\u8868\u793a\uff0c\u90a3\u4e48\u6bcf\u4e00\u4e2a\u50cf\u7d20\u81f3\u5c11\u9700\u89813\u5b57\u8282\uff0c\u5206\u8fa8\u73871280\u00d7720\u7684\u56fe\u50cf\u7684\u5927\u5c0f\u4e3a2.76M\u5b57\u8282\u3002<\/p>\n

\u5982\u679c\u5bf9\u4e8e\u540c\u6837\u5206\u8fa8\u7387\u7684\u89c6\u9891\uff0c\u5982\u679c\u5e27\u7387\u4e3a25\u5e27\/\u79d2\uff0c\u90a3\u4e48\u4f20\u8f93\u6240\u9700\u7684\u7801\u7387\u5c06\u8fbe\u5230553Mb\/s\uff01\u5982\u679c\u5bf9\u4e8e\u66f4\u9ad8\u6e05\u7684\u89c6\u9891\uff0c\u59821080P\u30014k\u30018k\u89c6\u9891\uff0c\u5176\u4f20\u8f93\u7801\u7387\u66f4\u662f\u60ca\u4eba\u3002\u8fd9\u6837\u7684\u6570\u636e\u91cf\uff0c\u65e0\u8bba\u662f\u5b58\u50a8\u8fd8\u662f\u4f20\u8f93\u90fd\u65e0\u6cd5\u627f\u53d7\u3002\u56e0\u6b64\uff0c\u5bf9\u89c6\u9891\u6570\u636e\u8fdb\u884c\u538b\u7f29\u79f0\u4e3a\u4e86\u5fc5\u7136\u4e4b\u9009\u3002<\/p>\n

2. \u89c6\u9891\u4fe1\u606f\u4e3a\u4ec0\u4e48\u53ef\u4ee5\u88ab\u538b\u7f29<\/span><\/p>\n

\u89c6\u9891\u4fe1\u606f\u4e4b\u6240\u4ee5\u5b58\u5728\u5927\u91cf\u53ef\u4ee5\u88ab\u538b\u7f29\u7684\u7a7a\u95f4\uff0c\u662f\u56e0\u4e3a\u5176\u4e2d\u672c\u8eab\u5c31\u5b58\u5728\u5927\u91cf\u7684\u6570\u636e\u5197\u4f59\u3002\u5176\u4e3b\u8981\u7c7b\u578b\u6709\uff1a<\/p>\n

\u65f6\u95f4\u5197\u4f59\uff1a\u89c6\u9891\u76f8\u90bb\u7684\u4e24\u5e27\u4e4b\u95f4\u5185\u5bb9\u76f8\u4f3c\uff0c\u5b58\u5728\u8fd0\u52a8\u5173\u7cfb
\u7a7a\u95f4\u5197\u4f59\uff1a\u89c6\u9891\u7684\u67d0\u4e00\u5e27\u5185\u90e8\u7684\u76f8\u90bb\u50cf\u7d20\u5b58\u5728\u76f8\u4f3c\u6027
\u7f16\u7801\u5197\u4f59\uff1a\u89c6\u9891\u4e2d\u4e0d\u540c\u6570\u636e\u51fa\u73b0\u7684\u6982\u7387\u4e0d\u540c
\u89c6\u89c9\u5197\u4f59\uff1a\u89c2\u4f17\u7684\u89c6\u89c9\u7cfb\u7edf\u5bf9\u89c6\u9891\u4e2d\u4e0d\u540c\u7684\u90e8\u5206\u654f\u611f\u5ea6\u4e0d\u540c<\/p>\n

\u9488\u5bf9\u8fd9\u4e9b\u4e0d\u540c\u7c7b\u578b\u7684\u5197\u4f59\u4fe1\u606f\uff0c\u5728\u5404\u79cd\u89c6\u9891\u7f16\u7801\u7684\u6807\u51c6\u7b97\u6cd5\u4e2d\u90fd\u6709\u4e0d\u540c\u7684\u6280\u672f\u4e13\u95e8\u5e94\u5bf9\uff0c\u4ee5\u901a\u8fc7\u4e0d\u540c\u7684\u89d2\u5ea6\u63d0\u9ad8\u538b\u7f29\u7684\u6bd4\u7387\u3002<\/p>\n

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3. \u89c6\u9891\u7f16\u7801\u6807\u51c6\u5316\u7ec4\u7ec7<\/span><\/p>\n

\u5728\u56fd\u9645\u7ec4\u7ec7\u7684\u72ec\u7acb\u548c\u8054\u5408\u5f00\u53d1\u4e2d\uff0c\u4ea7\u751f\u4e86\u5f88\u591a\u91cd\u8981\u7684\u89c6\u9891\u7f16\u89e3\u7801\u6807\u51c6\u3002\u4e3b\u8981\u56fd\u9645\u7ec4\u7ec7\u5305\u62ecISO\/IEC MPEG\u3001ITU-T\u3001Google\u3001Microsoft\u3001AVS\u5de5\u4f5c\u7ec4\u548cAOM\u8054\u76df\u7b49\u3002<\/p>\n

ITU-T\uff0c\u5168\u79f0International Telecommunications Union – Telecommunication Standardization Sector\uff0c\u5373\u56fd\u9645\u7535\u4fe1\u8054\u76df\u2014\u2014\u7535\u4fe1\u6807\u51c6\u5206\u5c40\u3002\u8be5\u7ec4\u7ec7\u4e0b\u8bbe\u7684VECG(Video Coding Experts Group)\u4e3b\u8981\u8d1f\u8d23\u9762\u5411\u5b9e\u65f6\u901a\u4fe1\u9886\u57df\u7684\u6807\u51c6\u5236\u5b9a\uff0c\u4e3b\u8981\u5236\u5b9a\u4e86H.261\/H263\/H263+\/H263++\u7b49\u6807\u51c6\u3002<\/p>\n

ISO\uff0c\u5168\u79f0International Standards Organization\uff0c\u5373\u56fd\u9645\u6807\u51c6\u5316\u7ec4\u7ec7\u3002\u8be5\u7ec4\u7ec7\u4e0b\u5c5e\u7684MPEG(Motion Picture Experts Group)\uff0c\u5373\u79fb\u52a8\u56fe\u50cf\u4e13\u5bb6\u7ec4\u4e3b\u8981\u8d1f\u8d23\u9762\u5411\u89c6\u9891\u5b58\u50a8\u3001\u5e7f\u64ad\u7535\u89c6\u3001\u7f51\u7edc\u4f20\u8f93\u7684\u89c6\u9891\u6807\u51c6\uff0c\u4e3b\u8981\u5236\u5b9a\u4e86MPEG-1\/MPEG-4\u7b49\u3002<\/p>\n

\u5b9e\u9645\u4e0a\uff0c\u771f\u6b63\u5728\u4e1a\u754c\u4ea7\u751f\u8f83\u5f3a\u5f71\u54cd\u529b\u7684\u6807\u51c6\u5747\u662f\u7531\u4e24\u4e2a\u7ec4\u7ec7\u5408\u4f5c\u4ea7\u751f\u7684\u3002\u6bd4\u5982MPEG-2\u3001H.264\/AVC\u548cH.265\/HEVC\u7b49\u3002<\/p>\n

\u4e3b\u8981\u6807\u51c6\u5305\u62ec\uff1aJPEG\u3001MJPEG\u3001JPEG2000\u3001H.261\u3001MPEG-1\u3001H.262\/MPEG-2\u3001H.263\u3001MPEG-4 (Part2\/ASP)\u3001H.264\/MPEG-4 (Part10\/AVC)\u3001H.265\/MPEG-H (Part2\/HEVC)\u3001H.266\/VVC\u3001VP8\/VP9\u3001AV1\u3001AVS1\/AVS2\u3001SVAC1\/SVAC2\u7b49\u3002<\/p>\n

\u4e0d\u540c\u6807\u51c6\u7ec4\u7ec7\u5236\u5b9a\u7684\u89c6\u9891\u7f16\u7801\u6807\u51c6\u7684\u53d1\u5c55\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n

<\/p>\n

<\/figure>\n
<\/figure>\n

<\/p>\n

<\/p>\n

<\/p>\n

4\u3001\u4e3b\u8981\u89c6\u9891\u7f16\u7801\u6807\u51c6\u4ecb\u7ecd<\/span><\/p>\n

4.1\u3001JPEG<\/span><\/p>\n

\u2002 \u2002 JPEG \u662fJoint Photographic Experts Group(\u8054\u5408\u56fe\u50cf\u4e13\u5bb6\u5c0f\u7ec4)\u7684\u7f29\u5199\uff0c\u662f\u7b2c\u4e00\u4e2a\u56fd\u9645\u56fe\u50cf\u538b\u7f29\u6807\u51c6\u3002JPEG\u56fe\u50cf\u538b\u7f29\u7b97\u6cd5\u80fd\u591f\u5728\u63d0\u4f9b\u826f\u597d\u7684\u538b\u7f29\u6027\u80fd\u7684\u540c\u65f6\uff0c\u5177\u6709\u6bd4\u8f83\u597d\u7684\u91cd\u5efa\u8d28\u91cf\uff0c\u88ab\u5e7f\u6cdb\u5e94\u7528\u4e8e\u56fe\u50cf\u3001\u89c6\u9891\u5904\u7406\u9886\u57df\u3002<\/p>\n

4.2\u3001MJPEG<\/span><\/p>\n

\u2002 \u2002 M-JPEG\uff08Motion- Join Photographic Experts Group\uff09\u6280\u672f\u5373\u8fd0\u52a8\u9759\u6b62\u56fe\u50cf\uff08\u6216\u9010\u5e27\uff09\u538b\u7f29\u6280\u672f\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8e\u975e\u7ebf\u6027\u7f16\u8f91\u9886\u57df\u53ef\u7cbe\u786e\u5230\u5e27\u7f16\u8f91\u548c\u591a\u5c42\u56fe\u50cf\u5904\u7406\uff0c\u628a\u8fd0\u52a8\u7684\u89c6\u9891\u5e8f\u5217\u4f5c\u4e3a\u8fde\u7eed\u7684\u9759\u6b62\u56fe\u50cf\u6765\u5904\u7406\uff0c\u8fd9\u79cd\u538b\u7f29\u65b9\u5f0f\u5355\u72ec\u5b8c\u6574\u5730\u538b\u7f29\u6bcf\u4e00\u5e27\uff0c\u5728\u7f16\u8f91\u8fc7\u7a0b\u4e2d\u53ef\u968f\u673a\u5b58\u50a8\u6bcf\u4e00\u5e27\uff0c\u53ef\u8fdb\u884c\u7cbe\u786e\u5230\u5e27\u7684\u7f16\u8f91\uff0c\u6b64\u5916M-JPEG\u7684\u538b\u7f29\u548c\u89e3\u538b\u7f29\u662f\u5bf9\u79f0\u7684\uff0c\u53ef\u7531\u76f8\u540c\u7684\u786c\u4ef6\u548c\u8f6f\u4ef6\u5b9e\u73b0\u3002\u4f46M-JPEG\u53ea\u5bf9\u5e27\u5185\u7684\u7a7a\u95f4\u5197\u4f59\u8fdb\u884c\u538b\u7f29\u3002\u4e0d\u5bf9\u5e27\u95f4\u7684\u65f6\u95f4\u5197\u4f59\u8fdb\u884c\u538b\u7f29\uff0c\u6545\u538b\u7f29\u6548\u7387\u4e0d\u9ad8\u3002\u91c7\u7528M-JPEG\u6570\u5b57\u538b\u7f29\u683c\u5f0f\uff0c\u5f53\u538b\u7f29\u6bd47:1\u65f6\uff0c\u53ef\u63d0\u4f9b\u76f8\u5f53\u4e8eBetecam SP\u8d28\u91cf\u56fe\u50cf\u7684\u8282\u76ee\u3002<\/p>\n

\u2002 JPEG\u6807\u51c6\u6240\u6839\u636e\u7684\u7b97\u6cd5\u662f\u57fa\u4e8eDCT\uff08\u79bb\u6563\u4f59\u5f26\u53d8\u6362\uff09\u548c\u53ef\u53d8\u957f\u7f16\u7801\u3002JPEG\u7684\u5173\u952e\u6280\u672f\u6709\u53d8\u6362\u7f16\u7801\u3001\u91cf\u5316\u3001\u5dee\u5206\u7f16\u7801\u3001\u8fd0\u52a8\u8865\u507f\u3001\u970d\u592b\u66fc\u7f16\u7801\u548c\u6e38\u7a0b\u7f16\u7801\u7b49<\/p>\n

\u2002 M-JPEG\u7684\u4f18\u70b9\u662f\uff1a\u53ef\u4ee5\u5f88\u5bb9\u6613\u505a\u5230\u7cbe\u786e\u5230\u5e27\u7684\u7f16\u8f91\u3001\u8bbe\u5907\u6bd4\u8f83\u6210\u719f\u3002\u7f3a\u70b9\u662f\u538b\u7f29\u6548\u7387\u4e0d\u9ad8\u3002<\/p>\n

\u2002 \u6b64\u5916\uff0cM-JPEG\u8fd9\u79cd\u538b\u7f29\u65b9\u5f0f\u5e76\u4e0d\u662f\u4e00\u4e2a\u5b8c\u5168\u7edf\u4e00\u7684\u538b\u7f29\u6807\u51c6\uff0c\u4e0d\u540c\u5382\u5bb6\u7684\u7f16\u89e3\u7801\u5668\u548c\u5b58\u50a8\u65b9\u5f0f\u5e76\u6ca1\u6709\u7edf\u4e00\u7684\u89c4\u5b9a\u683c\u5f0f\u3002\u8fd9\u4e5f\u5c31\u662f\u8bf4\uff0c\u6bcf\u4e2a\u578b\u53f7\u7684\u89c6\u9891\u670d\u52a1\u5668\u6216\u7f16\u7801\u677f\u6709\u81ea\u5df1\u7684M-JPEG\u7248\u672c\uff0c\u6240\u4ee5\u5728\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u6570\u636e\u4f20\u8f93\u3001\u975e\u7ebf\u6027\u5236\u4f5c\u7f51\u7edc\u5411\u670d\u52a1\u5668\u7684\u6570\u636e\u4f20\u8f93\u90fd\u6839\u672c\u662f\u4e0d\u53ef\u80fd\u7684\u3002<\/p>\n

4.3\u3001JPEG2000<\/span><\/p>\n

\u2002 \u2002 JPEG 2000 (JP2) is an image compression standard and coding system. It was created by the Joint Photographic Experts Group committee in 2000 with the intention of superseding their original discrete cosine transform-based JPEG standard (created in 1992) with a newly designed, wavelet-based method. The standardized filename extension is .jp2 for ISO\/IEC 15444-1 conforming files and .jpx for the extended part-2 specifications, published as ISO\/IEC 15444-2. The registered MIME types are defined in RFC 3745. For ISO\/IEC 15444-1 it is image\/jp2.<\/p>\n

4.4\u3001H.261<\/span><\/p>\n

\u2002 \u2002 H.261\u89c6\u9891\u7f16\u7801\u6807\u51c6\u8bde\u751f\u4e8e1988\u5e74\uff0c\u53ef\u8c13\u662f\u89c6\u9891\u538b\u7f29\u7f16\u7801\u53d1\u5c55\u7684\u7b2c\u4e00\u4e2a\u91cc\u7a0b\u7891\u3002\u56e0\u4e3a\u4eceH.261\u5f00\u59cb\uff0c\u89c6\u9891\u7f16\u7801\u65b9\u6cd5\u91c7\u7528\u4e86\u6cbf\u7528\u81f3\u4eca\u7684\u57fa\u4e8e\u6ce2\u5f62\u7684\u6df7\u5408\u7f16\u7801\u65b9\u6cd5\u3002H.261\u6807\u51c6\u4e3b\u8981\u76ee\u6807\u662f\u7528\u4e8e\u89c6\u9891\u4f1a\u8bae\u548c\u53ef\u89c6\u7535\u8bdd\u7b49\u9ad8\u5b9e\u65f6\u6027\u3001\u4f4e\u7801\u7387\u7684\u89c6\u9891\u56fe\u50cf\u4f20\u8f93\u573a\u5408\u3002<\/p>\n

\u2002 \u5728H.261\u6807\u51c6\u4ea7\u751f\u7684\u65f6\u4ee3\uff0c\u7531\u4e8e\u5404\u56fd\u7684\u7535\u89c6\u5236\u5f0f\u4e0d\u4e00\u81f4\uff0c\u56e0\u6b64\u4e0d\u80fd\u76f4\u63a5\u4e92\u901a\u3002\u4e3a\u4e86\u89e3\u51b3\u6570\u636e\u6e90\u683c\u5f0f\u4e0d\u517c\u5bb9\u7684\u95ee\u9898\uff0cH.261\u5b9a\u4e49\u4e86\u4e00\u79cd\u516c\u5171\u4e2d\u95f4\u683c\u5f0fCIF(Common Intermediate Format)\u3002\u7f16\u7801\u7684\u76ee\u6807\u683c\u5f0f\u9996\u9009\u8f6c\u6362\u4e3aCIF\u683c\u5f0f\u8fdb\u884c\u7f16\u7801\u548c\u4f20\u8f93\uff0c\u63a5\u6536\u7aef\u8fdb\u884c\u89e3\u7801\u540e\u518d\u8f6c\u6362\u4e3a\u5404\u81ea\u7684\u683c\u5f0f\u3002H.261\u89c4\u5b9a\u7684CIF\u683c\u5f0f\u89c6\u9891\u7684\u4eae\u5ea6\u5206\u8fa8\u7387\u4e3a352\u00d7288\uff0cQCIF\u683c\u5f0f\u7684\u4eae\u5ea6\u5206\u8fa8\u7387\u4e3a176\u00d7144\u3002<\/p>\n

H.261\u4fe1\u6e90\u7f16\u7801\u6240\u91c7\u7528\u7684\u6280\u672f\uff1a<\/p>\n

\u5e27\u5185\u7f16\u7801\/\u5e27\u95f4\u7f16\u7801\u5224\u5b9a\uff1a\u6839\u636e\u5e27\u4e0e\u5e27\u4e4b\u95f4\u7684\u76f8\u5173\u6027\u5224\u5b9a\u2014\u2014\u76f8\u5173\u6027\u9ad8\u4f7f\u7528\u5e27\u95f4\u7f16\u7801\uff0c\u76f8\u5173\u6027\u4f4e\u4f7f\u7528\u5e27\u5185\u7f16\u7801\u3002
\u5e27\u5185\u7f16\u7801\uff1a\u5bf9\u4e8e\u5e27\u5185\u7f16\u7801\u5e27\uff0c\u76f4\u63a5\u4f7f\u7528DCT\u7f16\u78018\u00d78\u7684\u50cf\u7d20\u5757\u3002
\u5e27\u95f4\u7f16\u7801\/\u8fd0\u52a8\u4f30\u8ba1\uff1a\u4f7f\u7528\u4ee5\u5b8f\u5757\u4e3a\u57fa\u7840\u7684\u8fd0\u52a8\u8865\u507f\u9884\u6d4b\u7f16\u7801\uff1b\u5f53\u524d\u5b8f\u5757\u4ece\u53c2\u8003\u5e27\u4e2d\u67e5\u627e\u6700\u4f73\u5339\u914d\u5b8f\u5757\uff0c\u5e76\u8ba1\u7b97\u5176\u76f8\u5bf9\u504f\u79fb\u91cf(Vx, Vy)\u4f5c\u4e3a\u8fd0\u52a8\u77e2\u91cf\uff1b\u7f16\u7801\u5668\u4f7f\u7528DCT\u3001\u91cf\u5316\u7f16\u7801\u5f53\u524d\u5b8f\u5757\u548c\u9884\u6d4b\u5b8f\u5757\u7684\u6b8b\u5dee\u4fe1\u53f7\uff1b\u5e27\u95f4\u7f16\u7801\/\u8fd0\u52a8\u4f30\u8ba1\uff1a\u4f7f\u7528\u4ee5\u5b8f\u5757\u4e3a\u57fa\u7840\u7684\u8fd0\u52a8\u8865\u507f\u9884\u6d4b\u7f16\u7801\uff1b\u5f53\u524d\u5b8f\u5757\u4ece\u53c2\u8003\u5e27\u4e2d\u67e5\u627e\u6700\u4f73\u5339\u914d\u5b8f\u5757\uff0c\u5e76\u8ba1\u7b97\u5176\u76f8\u5bf9\u504f\u79fb\u91cf(Vx, Vy)\u4f5c\u4e3a\u8fd0\u52a8\u77e2\u91cf\uff1b\u7f16\u7801\u5668\u4f7f\u7528DCT\u3001\u91cf\u5316\u7f16\u7801\u5f53\u524d\u5b8f\u5757\u548c\u9884\u6d4b\u5b8f\u5757\u7684\u6b8b\u5dee\u4fe1\u53f7\uff1b
\u73af\u8def\u6ee4\u6ce2\u5668\uff1a\u5b9e\u9645\u4e0a\u662f\u4e00\u4e2a\u6570\u5b57\u4f4e\u901a\u6ee4\u6ce2\u5668\uff0c\u6ee4\u9664\u4e0d\u5fc5\u8981\u7684\u9ad8\u9891\u4fe1\u606f\uff0c\u4ee5\u6d88\u9664\u65b9\u5757\u6548\u5e94\uff1b\u73af\u8def\u6ee4\u6ce2\u5668\uff1a\u5b9e\u9645\u4e0a\u662f\u4e00\u4e2a\u6570\u5b57\u4f4e\u901a\u6ee4\u6ce2\u5668\uff0c\u6ee4\u9664\u4e0d\u5fc5\u8981\u7684\u9ad8\u9891\u4fe1\u606f\uff0c\u4ee5\u6d88\u9664\u65b9\u5757\u6548\u5e94\uff1b<\/p>\n

4.5\u3001MPEG-1<\/span><\/p>\n

\u2002 \u2002 MPEG-1\u6807\u51c6\u4e8e1993\u5e748\u6708\u516c\u5e03\uff0c\u7528\u4e8e\u4f20\u8f931.5Mbps\u6570\u636e\u4f20\u8f93\u7387\u7684\u6570\u5b57\u5b58\u50a8\u5a92\u4f53\u8fd0\u52a8\u56fe\u50cf\u53ca\u5176\u4f34\u97f3\u7684\u7f16\u7801\u3002\u8be5\u6807\u51c6\u5305\u62ec\u4e94\u4e2a\u90e8\u5206\uff1a<\/p>\n

\u2002\u2002 \u7b2c\u4e00\u90e8\u5206\u8bf4\u660e\u4e86\u5982\u4f55\u6839\u636e\u7b2c\u4e8c\u90e8\u5206\uff08\u89c6\u9891\uff09\u4ee5\u53ca\u7b2c\u4e09\u90e8\u5206\uff08\u97f3\u9891\uff09\u7684\u89c4\u5b9a\uff0c\u5bf9\u97f3\u9891\u548c\u89c6\u9891\u8fdb\u884c\u590d\u5408\u7f16\u7801\u3002\u7b2c\u56db\u90e8\u5206\u8bf4\u660e\u4e86\u68c0\u9a8c\u89e3\u7801\u5668\u6216\u7f16\u7801\u5668\u7684\u8f93\u51fa\u6bd4\u7279\u6d41\u7b26\u5408\u524d\u4e09\u90e8\u5206\u89c4\u5b9a\u7684\u8fc7\u7a0b\u3002\u7b2c\u4e94\u90e8\u5206\u662f\u4e00\u4e2a\u7528\u5b8c\u6574\u7684C\u8bed\u8a00\u5b9e\u73b0\u7684\u7f16\u7801\u548c\u89e3\u7801\u5668\u3002<\/p>\n

\u2002 \u2002 \u8be5\u6807\u51c6\u4ece\u9881\u5e03\u7684\u90a3\u4e00\u523b\u8d77\uff0cMPEG-1\u53d6\u5f97\u4e00\u8fde\u4e32\u7684\u6210\u529f\uff0c\u5982VCD\u548cMP3\u7684\u5927\u91cf\u4f7f\u7528\uff0cWindows95\u4ee5\u540e\u7684\u7248\u672c\u90fd\u5e26\u6709\u4e00\u4e2aMPEG-1\u8f6f\u4ef6\u89e3\u7801\u5668\uff0c\u53ef\u643a\u5f0fMPEG-1\u6444\u50cf\u673a\u7b49\u7b49\u3002<\/p>\n

4.6\u3001MPEG-2\/H.262<\/span><\/p>\n

\u2002 \u2002 MPEG\u7ec4\u7ec7\u4e8e1994\u5e74\u63a8\u51faMPEG-2\u538b\u7f29\u6807\u51c6\uff0c\u4ee5\u5b9e\u73b0\u89c6\/\u97f3\u9891\u670d\u52a1\u4e0e\u5e94\u7528\u4e92\u64cd\u4f5c\u7684\u53ef\u80fd\u6027\u3002\u3000MPEG-2\u6807\u51c6\u662f\u9488\u5bf9\u6807\u51c6\u6570\u5b57\u7535\u89c6\u548c\u9ad8\u6e05\u6670\u5ea6\u7535\u89c6\u5728\u5404\u79cd\u5e94\u7528\u4e0b\u7684\u538b\u7f29\u65b9\u6848\u548c\u7cfb\u7edf\u5c42\u7684\u8be6\u7ec6\u89c4\u5b9a\uff0c\u7f16\u7801\u7801\u7387\u4ece\u6bcf\u79d23\u5146\u6bd4\u7279\uff5e100\u5146\u6bd4\u7279\uff0c\u6807\u51c6\u7684\u6b63\u5f0f\u89c4\u8303\u5728ISO\/IEC13818\u4e2d\u3002MPEG-2\u4e0d\u662fMPEG-1\u7684\u7b80\u5355\u5347\u7ea7\uff0cMPEG-2\u5728\u7cfb\u7edf\u548c\u4f20\u9001\u65b9\u9762\u4f5c\u4e86\u66f4\u52a0\u8be6\u7ec6\u7684\u89c4\u5b9a\u548c\u8fdb\u4e00\u6b65\u7684\u5b8c\u5584\u3002MPEG-2\u7279\u522b\u9002\u7528\u4e8e\u5e7f\u64ad\u7ea7\u7684\u6570\u5b57\u7535\u89c6\u7684\u7f16\u7801\u548c\u4f20\u9001\uff0c\u88ab\u8ba4\u5b9a\u4e3aSDTV\u548cHDTV\u7684\u7f16\u7801\u6807\u51c6\u3002<\/p>\n

\u2002\u2002 MPEG-2\u56fe\u50cf\u538b\u7f29\u7684\u539f\u7406\u662f\u5229\u7528\u4e86\u56fe\u50cf\u4e2d\u7684\u4e24\u79cd\u7279\u6027\uff1a\u7a7a\u95f4\u76f8\u5173\u6027\u548c\u65f6\u95f4\u76f8\u5173\u6027\u3002\u8fd9\u4e24\u79cd\u76f8\u5173\u6027\u4f7f\u5f97\u56fe\u50cf\u4e2d\u5b58\u5728\u5927\u91cf\u7684\u5197\u4f59\u4fe1\u606f\u3002\u5982\u679c\u6211\u4eec\u80fd\u5c06\u8fd9\u4e9b\u5197\u4f59\u4fe1\u606f\u53bb\u9664\uff0c\u53ea\u4fdd\u7559\u5c11\u91cf\u975e\u76f8\u5173\u4fe1\u606f\u8fdb\u884c\u4f20\u8f93\uff0c\u5c31\u53ef\u4ee5\u5927\u5927\u8282\u7701\u4f20\u8f93\u9891\u5e26\u3002\u800c\u63a5\u6536\u673a\u5229\u7528\u8fd9\u4e9b\u975e\u76f8\u5173\u4fe1\u606f\uff0c\u6309\u7167\u4e00\u5b9a\u7684\u89e3\u7801\u7b97\u6cd5\uff0c\u53ef\u4ee5\u5728\u4fdd\u8bc1\u4e00\u5b9a\u7684\u56fe\u50cf\u8d28\u91cf\u7684\u524d\u63d0\u4e0b\u6062\u590d\u539f\u59cb\u56fe\u50cf\u3002\u4e00\u4e2a\u597d\u7684\u538b\u7f29\u7f16\u7801\u65b9\u6848\u5c31\u662f\u80fd\u591f\u6700\u5927\u9650\u5ea6\u5730\u53bb\u9664\u56fe\u50cf\u4e2d\u7684\u5197\u4f59\u4fe1\u606f\u3002<\/p>\n

\u2002 \u2002 MPEG-2\u7684\u7f16\u7801\u56fe\u50cf\u88ab\u5206\u4e3a\u4e09\u7c7b\uff0c\u5206\u522b\u79f0\u4e3aI\u5e27\uff0cP\u5e27\u548cB\u5e27\u3002 I\u5e27\u56fe\u50cf\u91c7\u7528\u5e27\u5185\u7f16\u7801\u65b9\u5f0f\uff0c\u5373\u53ea\u5229\u7528\u4e86\u5355\u5e27\u56fe\u50cf\u5185\u7684\u7a7a\u95f4\u76f8\u5173\u6027\uff0c\u800c\u6ca1\u6709\u5229\u7528\u65f6\u95f4\u76f8\u5173\u6027\u3002P\u5e27\u548cB\u5e27\u56fe\u50cf\u91c7\u7528\u5e27\u95f4\u7f16\u7801\u65b9\u5f0f\uff0c\u5373\u540c\u65f6\u5229\u7528\u4e86\u7a7a\u95f4\u548c\u65f6\u95f4\u4e0a\u7684\u76f8\u5173\u6027\u3002P\u5e27\u56fe\u50cf\u53ea\u91c7\u7528\u524d\u5411\u65f6\u95f4\u9884\u6d4b\uff0c\u53ef\u4ee5\u63d0\u9ad8\u538b\u7f29\u6548\u7387\u548c\u56fe\u50cf\u8d28\u91cf\u3002P\u5e27\u56fe\u50cf\u4e2d\u53ef\u4ee5\u5305\u542b\u5e27\u5185\u7f16\u7801\u7684\u90e8\u5206\uff0c\u5373P\u5e27\u4e2d\u7684\u6bcf\u4e00\u4e2a\u5b8f\u5757\u53ef\u4ee5\u662f\u524d\u5411\u9884\u6d4b\uff0c\u4e5f\u53ef\u4ee5\u662f\u5e27\u5185\u7f16\u7801\u3002B\u5e27\u56fe\u50cf\u91c7\u7528\u53cc\u5411\u65f6\u95f4\u9884\u6d4b\uff0c\u53ef\u4ee5\u5927\u5927\u63d0\u9ad8\u538b\u7f29\u500d\u6570\u3002<\/p>\n

\u2002 \u2002 MPEG-2\u7684\u7f16\u7801\u7801\u6d41\u5206\u4e3a\u516d\u4e2a\u5c42\u6b21\u3002\u4e3a\u66f4\u597d\u5730\u8868\u793a\u7f16\u7801\u6570\u636e\uff0cMPEG-2\u7528\u53e5\u6cd5\u89c4\u5b9a\u4e86\u4e00\u4e2a\u5c42\u6b21\u6027\u7ed3\u6784\u3002\u5b83\u5206\u4e3a\u516d\u5c42\uff0c\u81ea\u4e0a\u5230\u4e0b\u5206\u522b\u662f\uff1a\u56fe\u50cf\u5e8f\u5217\u5c42\u3001\u56fe\u50cf\u7ec4(GOP)\u3001\u56fe\u50cf\u3001\u5b8f\u5757\u6761\u3001\u5b8f\u5757\u3001\u5757\u3002<\/p>\n

4.7\u3001H.263<\/span><\/p>\n

\u2002 \u2002 H.263\u662f\u56fd\u9645\u7535\u8054ITU-T\u7684\u4e00\u4e2a\u6807\u51c6\u8349\u6848\uff0c\u662f\u4e3a\u4f4e\u7801\u6d41\u901a\u4fe1\u800c\u8bbe\u8ba1\u7684\u3002\u4f46\u5b9e\u9645\u4e0a\u8fd9\u4e2a\u6807\u51c6\u53ef\u7528\u5728\u5f88\u5bbd\u7684\u7801\u6d41\u8303\u56f4\uff0c\u800c\u975e\u53ea\u7528\u4e8e\u4f4e\u7801\u6d41\u5e94\u7528\uff0c\u5b83\u5728\u8bb8\u591a\u5e94\u7528\u4e2d\u53ef\u4ee5\u8ba4\u4e3a\u88ab\u7528\u4e8e\u53d6\u4ee3H.261\u3002H.263\u7684\u7f16\u7801\u7b97\u6cd5\u4e0eH.261\u4e00\u6837\uff0c\u4f46\u505a\u4e86\u4e00\u4e9b\u6539\u5584\u548c\u6539\u53d8\uff0c\u4ee5\u63d0\u9ad8\u6027\u80fd\u548c\u7ea0\u9519\u80fd\u529b\u3002.263\u6807\u51c6\u5728\u4f4e\u7801\u7387\u4e0b\u80fd\u591f\u63d0\u4f9b\u6bd4H.261\u66f4\u597d\u7684\u56fe\u50cf\u6548\u679c\uff0c\u4e24\u8005\u7684\u533a\u522b\u6709\uff1a(1)H.263\u7684\u8fd0\u52a8\u8865\u507f\u4f7f\u7528\u534a\u8c61\u7d20\u7cbe\u5ea6\uff0c\u800cH.261\u5219\u7528\u5168\u8c61\u7d20\u7cbe\u5ea6\u548c\u5faa\u73af\u6ee4\u6ce2\uff1b(2)\u6570\u636e\u6d41\u5c42\u6b21\u7ed3\u6784\u7684\u67d0\u4e9b\u90e8\u5206\u5728H.263\u4e2d\u662f\u53ef\u9009\u7684\uff0c\u4f7f\u5f97\u7f16\u89e3\u7801\u53ef\u4ee5\u914d\u7f6e\u6210\u66f4\u4f4e\u7684\u6570\u636e\u7387\u6216\u66f4\u597d\u7684\u7ea0\u9519\u80fd\u529b\uff1b(3)H.263\u5305\u542b\u56db\u4e2a\u53ef\u534f\u5546\u7684\u9009\u9879\u4ee5\u6539\u5584\u6027\u80fd\uff1b(4)H.263\u91c7\u7528\u65e0\u9650\u5236\u7684\u8fd0\u52a8\u5411\u91cf\u4ee5\u53ca\u57fa\u4e8e\u8bed\u6cd5\u7684\u7b97\u672f\u7f16\u7801\uff1b(5)\u91c7\u7528\u4e8b\u5148\u9884\u6d4b\u548c\u4e0eMPEG\u4e2d\u7684P-B\u5e27\u4e00\u6837\u7684\u5e27\u9884\u6d4b\u65b9\u6cd5\uff1b(6)H.263\u652f\u63015\u79cd\u5206\u8fa8\u7387\uff0c\u5373\u9664\u4e86\u652f\u6301H.261\u4e2d\u6240\u652f\u6301\u7684QCIF\u548cCIF\u5916\uff0c\u8fd8\u652f\u6301SQCIF\u30014CIF\u548c16CIF\uff0cSQCIF\u76f8\u5f53\u4e8eQCIF\u4e00\u534a\u7684\u5206\u8fa8\u7387\uff0c\u800c4CIF\u548c16CIF\u5206\u522b\u4e3aCIF\u76844\u500d\u548c16\u500d\u3002<\/p>\n

\u2002 \u2002 1998\u5e74IUT-T\u63a8\u51fa\u7684H.263\uff0b\u662fH.263\u5efa\u8bae\u7684\u7b2c2\u7248\uff0c\u5b83\u63d0\u4f9b\u4e8612\u4e2a\u65b0\u7684\u53ef\u534f\u5546\u6a21\u5f0f\u548c\u5176\u4ed6\u7279\u5f81\uff0c\u8fdb\u4e00\u6b65\u63d0\u9ad8\u4e86\u538b\u7f29\u7f16\u7801\u6027\u80fd\u3002\u5982H.263\u53ea\u67095\u79cd\u89c6\u9891\u6e90\u683c\u5f0f\uff0cH.263\uff0b\u5141\u8bb8\u4f7f\u7528\u66f4\u591a\u7684\u6e90\u683c\u5f0f\uff0c\u56fe\u50cf\u65f6\u949f\u9891\u7387\u4e5f\u6709\u591a\u79cd\u9009\u62e9\uff0c\u62d3\u5bbd\u5e94\u7528\u8303\u56f4\uff1b\u53e6\u4e00\u91cd\u8981\u7684\u6539\u8fdb\u662f\u53ef\u6269\u5c55\u6027\uff0c\u5b83\u5141\u8bb8\u591a\u663e\u793a\u7387\u3001\u591a\u901f\u7387\u53ca\u591a\u5206\u8fa8\u7387\uff0c\u589e\u5f3a\u4e86\u89c6\u9891\u4fe1\u606f\u5728\u6613\u8bef\u7801\u3001\u6613\u4e22\u5305\u5f02\u6784\u7f51\u7edc\u73af\u5883\u4e0b\u7684\u4f20\u8f93\u3002\u53e6\u5916\uff0cH.263\uff0b\u5bf9H.263\u4e2d\u7684\u4e0d\u53d7\u9650\u8fd0\u52a8\u77e2\u91cf\u6a21\u5f0f\u8fdb\u884c\u4e86\u6539\u8fdb\uff0c\u52a0\u4e0a12\u4e2a\u65b0\u589e\u7684\u53ef\u9009\u6a21\u5f0f\uff0c\u4e0d\u4ec5\u63d0\u9ad8\u4e86\u7f16\u7801\u6027\u80fd\uff0c\u800c\u4e14\u589e\u5f3a\u4e86\u5e94\u7528\u7684\u7075\u6d3b\u6027\u3002H.263\u5df2\u7ecf\u57fa\u672c\u4e0a\u53d6\u4ee3\u4e86H.261\u3002<\/p>\n

4.8\u3001MPEG-4 (Part2\/ASP)<\/span><\/p>\n

\u2002 \u2002 \u8fd0\u52a8\u56fe\u50cf\u4e13\u5bb6\u7ec4MPEG \u4e8e1999\u5e742\u6708\u6b63\u5f0f\u516c\u5e03\u4e86MPEG-4\uff08ISO\/IEC14496\uff09\u6807\u51c6\u7b2c\u4e00\u7248\u672c\u3002\u540c\u5e74\u5e74\u5e95MPEG-4\u7b2c\u4e8c\u7248\u4ea6\u544a\u5e95\u5b9a\uff0c\u4e14\u4e8e2000\u5e74\u5e74\u521d\u6b63\u5f0f\u6210\u4e3a\u56fd\u9645\u6807\u51c6\u3002<\/p>\n

\u2002 \u2002 MPEG-4\u4e0eMPEG-1\u548cMPEG-2\u6709\u5f88\u5927\u7684\u4e0d\u540c\u3002MPEG-4\u4e0d\u53ea\u662f\u5177\u4f53\u538b\u7f29\u7b97\u6cd5\uff0c\u5b83\u662f\u9488\u5bf9\u6570\u5b57\u7535\u89c6\u3001\u4ea4\u4e92\u5f0f\u7ed8\u56fe\u5e94\u7528\uff08\u5f71\u97f3\u5408\u6210\u5185\u5bb9\uff09\u3001\u4ea4\u4e92\u5f0f\u591a\u5a92\u4f53\uff08WWW\u3001\u8d44\u6599\u64b7\u53d6\u4e0e\u5206\u6563\uff09\u7b49\u6574\u5408\u53ca\u538b\u7f29\u6280\u672f\u7684\u9700\u6c42\u800c\u5236\u5b9a\u7684\u56fd\u9645\u6807\u51c6\u3002MPEG-4\u6807\u51c6\u5c06\u4f17\u591a\u7684\u591a\u5a92\u4f53\u5e94\u7528\u96c6\u6210\u4e8e\u4e00\u4e2a\u5b8c\u6574\u7684\u6846\u67b6\u5185\uff0c\u65e8\u5728\u4e3a\u591a\u5a92\u4f53\u901a\u4fe1\u53ca\u5e94\u7528\u73af\u5883\u63d0\u4f9b\u6807\u51c6\u7684\u7b97\u6cd5\u53ca\u5de5\u5177\uff0c\u4ece\u800c\u5efa\u7acb\u8d77\u4e00\u79cd\u80fd\u88ab\u591a\u5a92\u4f53\u4f20\u8f93\u3001\u5b58\u50a8\u3001\u68c0\u7d22\u7b49\u5e94\u7528\u9886\u57df\u666e\u904d\u91c7\u7528\u7684\u7edf\u4e00\u6570\u636e\u683c\u5f0f\u3002<\/p>\n

4.9\u3001H.264\/MPEG4 (Part10 AVC)<\/span><\/p>\n

\u2002 \u2002 H.264\u662f\u7531ISO\/IEC\u4e0eITU-T\u7ec4\u6210\u7684\u8054\u5408\u89c6\u9891\u7ec4(JVT)\u5236\u5b9a\u7684\u65b0\u4e00\u4ee3\u89c6\u9891\u538b\u7f29\u7f16\u7801\u6807\u51c6\u3002\u5728ISO\/IEC\u4e2d\u8be5\u6807\u51c6\u547d\u540d\u4e3aAVC (Advanced Video Coding)\uff0c\u4f5c\u4e3aMPEG-4\u6807\u51c6\u7684\u7b2c10\u4e2a\u9009\u9879\uff1b\u5728ITU-T\u4e2d\u6b63\u5f0f\u547d\u540d\u4e3aH.264\u6807\u51c6\u3002<\/p>\n

4.10\u3001H.265\/HEVC<\/span><\/p>\n

\u2002 \u2002 H.265\u662fITU-T VCEG \u7ee7H.264\u4e4b\u540e\u6240\u5236\u5b9a\u7684\u65b0\u7684\u89c6\u9891\u7f16\u7801\u6807\u51c6\u3002H.265\u6807\u51c6\u56f4\u7ed5\u7740\u73b0\u6709\u7684\u89c6\u9891\u7f16\u7801\u6807\u51c6H.264\uff0c\u4fdd\u7559\u539f\u6765\u7684\u67d0\u4e9b\u6280\u672f\uff0c\u540c\u65f6\u5bf9\u4e00\u4e9b\u76f8\u5173\u7684\u6280\u672f\u52a0\u4ee5\u6539\u8fdb\u3002\u65b0\u6280\u672f\u4f7f\u7528\u5148\u8fdb\u7684\u6280\u672f\u7528\u4ee5\u6539\u5584\u7801\u6d41\u3001\u7f16\u7801\u8d28\u91cf\u3001\u5ef6\u65f6\u548c\u7b97\u6cd5\u590d\u6742\u5ea6\u4e4b\u95f4\u7684\u5173\u7cfb\uff0c\u8fbe\u5230\u6700\u4f18\u5316\u8bbe\u7f6e\u3002\u5177\u4f53\u7684\u7814\u7a76\u5185\u5bb9\u5305\u62ec:\u63d0\u9ad8\u538b\u7f29\u6548\u7387\u3001\u63d0\u9ad8\u9c81\u68d2\u6027\u548c\u9519\u8bef\u6062\u590d\u80fd\u529b\u3001\u51cf\u5c11\u5b9e\u65f6\u7684\u65f6\u5ef6\u3001\u51cf\u5c11\u4fe1\u9053\u83b7\u53d6\u65f6\u95f4\u548c\u968f\u673a\u63a5\u5165\u65f6\u5ef6\u3001\u964d\u4f4e\u590d\u6742\u5ea6\u7b49\u3002H264\u7531\u4e8e\u7b97\u6cd5\u4f18\u5316\uff0c\u53ef\u4ee5\u4f4e\u4e8e1Mbps\u7684\u901f\u5ea6\u5b9e\u73b0\u6807\u6e05\u6570\u5b57\u56fe\u50cf\u4f20\u9001;H265\u5219\u53ef\u4ee5\u5b9e\u73b0\u5229\u75281~2Mbps\u7684\u4f20\u8f93\u901f\u5ea6\u4f20\u9001720P(\u5206\u8fa8\u73871280*720)\u666e\u901a\u9ad8\u6e05\u97f3\u89c6\u9891\u4f20\u9001\u3002<\/p>\n

4.11\u3001VP8\/VP9<\/span><\/p>\n

https:\/\/<\/span>en.wikipedia.org\/wiki\/V<\/span>P8<\/span><\/span><\/a><\/p>\n

4.12\u3001AV1<\/span><\/p>\n

\u2002 \u2002 AV1\uff08AOMedia Video Codec 1.0\uff09:
\u2002 \u2002\u76f8\u5173\u7f51\u5740\uff1a
http:\/\/audiovisualone.com<\/a> \uff1a AV1\u516c\u53f8\u7f51\u7ad9
http:\/\/audio-video1.com<\/a> \uff1a\u4e3b\u8981\u9762\u5411\u5bb6\u5ead\u63d0\u4f9b\u89c6\u97f3\u9891\u5e94\u7528\u7684\u4f9b\u5e94\u5546
http:\/\/www.<\/span>ctolib.com\/learndromore<\/span>ira-digital<\/span><\/span><\/a> video introdution.html \uff1a\u76f8\u5173\u5b66\u4e60\u8d44\u6599
https:\/\/<\/span>xiph.org\/daala<\/span><\/span><\/a> \uff1aXiph\uff08Mozilla\u57fa\u91d1\u4f1a\uff09\u7684\u89c6\u9891\u538b\u7f29\u6280\u672f\uff0c\u5373Daala(\u8fbe\u62c9)
http:\/\/aomedia.org<\/a> : \u5f00\u653e\u5a92\u4f53\u8054\u76df\u5b98\u7f51\uff0c\u4e3b\u8981\u7531\u4e00\u4e9b\u786c\u4ef6\u5236\u9020\u5546\u5171\u540c\u5efa\u7acb\uff0c\u662f\u53d1\u5e03AV1\u7684\u4e3b\u8981\u7ec4\u7ec7
http:\/\/<\/span>aomanalyzer.org\/<\/span><\/span><\/a> : AV1\u7f16\u89e3\u7801\u5668\u5bf9\u5e94\u7684\u7801\u6d41\u5206\u6790\u5de5\u5177\u7f51\u7ad9<\/p>\n

\u2002 \u2002AV1\u80cc\u666f\uff1a
\u2002 \u20022015\u5e74\u5e74\u521d\uff0cGoogle\u6b63\u81f4\u529b\u4e8eVP10\u7684\u7814\u7a76\uff0cXiph\u5728\u7ee7\u7eedDaala\u89c6\u9891\u538b\u7f29\u6280\u672f\u7684\u7814\u7a76\uff0cCisco\u5f00\u6e90\u4e86\u514d\u7248\u7a0e\u7684\u89c6\u9891\u7f16\u89e3\u7801\u5668\uff0c\u5373\u96f7\u795e\uff08Thor\uff09\u3002 \u4e4b\u540e\uff0cMPEG-LA\u516c\u53f8\u9996\u6b21\u5ba3\u5e03H265\u7684\u4f7f\u7528\u5e74\u8d39\uff08\u662f\u4f7f\u7528H264\u76848\u500d\u591a\uff09\u3002\u7531\u4e8eH265\u4f7f\u7528\u5e74\u8d39\u592a\u9ad8\uff0c\u4e00\u4e9b\u786c\u4ef6\u5236\u9020\u5546\uff08Amozon\u3001Cisco\u3001Google\u3001Intel\u3001Microsoft\u3001Mozilla\u3001Netflix\uff09\u4e8e2015\u5e749\u6708\u8054\u5408\u6210\u7acb\u4e86\u201c\u5f00\u653e\u5a92\u4f53\u8054\u76df\u201d\uff0c\u5176\u4e2d\u5185\u5bb9\u7684\u53d1\u5e03\u7531Google\u3001Netflix\u548cAmozon\u8d1f\u8d23\uff0c\u7f51\u7ad9\u7684\u7ef4\u62a4\u7531Google\u548cMozilla\u8d1f\u8d23\u30022016\u5e744\u67085\u65e5\uff0cAMD\u3001ARM\u548cNVIDIA\u4e5f\u52a0\u5165\u4e86\u8be5\u8054\u76df\uff0c\u8fd9\u4e9b\u52a0\u5165\u8054\u76df\u7684\u516c\u53f8\u90fd\u6709\u4e00\u4e2a\u5171\u540c\u7684\u76ee\u6807\uff0c\u5373\u5f00\u53d1\u51fa\u4e00\u4e2a\u514d\u7248\u7a0e\u7684\u89c6\u9891\u7f16\u89e3\u7801\u5668\uff0c\u6b64\u65f6AV1\u987a\u52bf\u800c\u8d77\u3002<\/p>\n

\u2002 \u2002AV1\u7b80\u4ecb\uff1a
\u2002 \u2002 AV1\u662f\u4e00\u79cd\u514d\u7248\u7a0e\u3001\u5f00\u6e90\u7684\u65b0\u89c6\u9891\u7f16\u7801\u6807\u51c6\uff0c\u96c6\u6210Daala\u3001Thor\u548cVPx\u90e8\u5206\u6700\u4f18\u79c0\u7684\u7f16\u7801\u601d\u60f3\uff0c\u7531\u5f00\u653e\u5a92\u4f53\u8054\u76df\uff08AOMedia\uff09\u53d1\u5e03\uff0c\u76ee\u524d\u7b2c\u4e00\u7248Version0.1.0\u5df2\u7ecf\u57282016\u5e744\u67087\u65e5\u53d1\u5e03\u3002AV1\u73b0\u9636\u6bb5\u7684\u4e3b\u8981\u76ee\u6807\u662f\u5728\u7f16\u89e3\u7801\u590d\u6742\u5ea6\u5408\u7406\u589e\u52a0\u7684\u524d\u63d0\u4e0b\uff0c\u7f16\u7801\u6027\u80fd\u9ad8\u4e8eVP9\/HEVC\u768450%\u3002
\u2002 \u2002 AOMedia\u58f0\u79f0\uff0c\u9884\u8ba1\u57282016\u5e74\u5e74\u5e95\u81f32017\u5e743\u6708\u6700\u7ec8\u786e\u5b9aAV1\u7801\u6d41\u76f8\u5173\u4fe1\u606f\uff0c\u5e76\u4e8e2018\u5e743\u6708\u9996\u6b21\u5728\u786c\u4ef6\u4e0a\u652f\u6301\u3002\u9700\u8981\u8bf4\u660e\u7684\u662f\uff0cAV1\u4e0e\u4ee5\u5f80\u89c6\u9891\u7f16\u7801\u6807\u51c6\u8f83\u5927\u7684\u533a\u522b\u4e4b\u4e00\u662f\u66f4\u52a0\u504f\u5411\u4e8e\u786c\u4ef6\u7f16\u89e3\u7801\u7684\u652f\u6301\uff0c\u8fd9\u4e5f\u662fAV1\u53d1\u8d77\u8005\uff08\u5927\u591a\u6570\u4e3a\u786c\u4ef6\u8bbe\u5907\u5236\u9020\u5382\u5546\uff09\u7684\u4e2a\u4eba\u5229\u76ca\u89d2\u5ea6\u6240\u8003\u8651\u7684\u3002<\/p>\n

\u2002 \u2002AV1\u8d44\u6e90\u4e0b\u8f7d\uff1a
AV1\u6e90\u7801\u4e0b\u8f7d\u5730\u5740\uff1ahttps:\/\/<\/span>aomedia.googlesource.com<\/span>\/aom<\/span><\/span><\/a>
AV1\u6d4b\u8bd5\u89c6\u9891\u5e8f\u5217\uff1ahttp:\/\/<\/span>media.xipha.org\/video\/d<\/span>erf\/<\/span><\/span><\/a>
AV1\u7801\u6d41\u5206\u6790\u5de5\u5177\u6e90\u7801\uff1ahttps:\/\/<\/span>github.com\/mbebenita\/ao<\/span>manalyzer<\/span><\/span><\/a>
AV1\u7801\u6d41\u5206\u6790\u5de5\u5177\uff1ahttps:\/\/<\/span>people.xiph.org\/~mbeben<\/span>ita\/analyzer\/<\/span><\/span><\/a><\/p>\n

4.13\u3001AVS1\/AVS2<\/span><\/p>\n

\u2002 \u2002 AVS1\u6807\u51c6\u662f\u4e2d\u56fd\u81ea\u4e3b\u7814\u53d1\u7684\u97f3\u89c6\u9891\u7f16\u89e3\u7801\u6807\u51c6\uff0c\u4e3b\u8981\u7528\u4e8e\u56fd\u5185\u536b\u661f\u7535\u89c6\u7684\u538b\u7f29\u4f20\u8f93\uff0c\u5176\u538b\u7f29\u7387\u76f8\u8f83\u4e8eH.264\u8981\u4f4e\u4e00\u4e9b\uff0c\u5728\u4f7f\u7528\u8303\u56f4\u548c\u63a8\u5e7f\u4e0a\u4e5f\u4e0d\u5982H.264\u3002<\/p>\n

4.14\u3001SVAC1\/SVAC2<\/span><\/p>\n

\u2002 \u2002 SVAC(Surveillance Video and Audio Coding)\uff0c\u5b89\u5168\u9632\u8303\u76d1\u63a7\u97f3\u89c6\u9891\u7f16\u89e3\u7801\u6280\u672f\uff0c\u8be5\u6280\u672f\u6807\u51c6\u662f\u6709\u4e2d\u661f\u5fae\u548c\u516c\u5b89\u4e00\u6240\u9488\u5bf9\u89c6\u9891\u76d1\u63a7\u5e94\u7528\u63d0\u51fa\u7684\u97f3\u89c6\u9891\u7f16\u7801\u6807\u51c6\uff0c\u8be5\u6807\u51c62010\u5e7412\u670823\u65e5\u53d1\u5e03\uff0c\u4e8e2011\u5e745\u67081\u65e5\u5f00\u59cb\u5b9e\u65bd\u3002<\/p>\n

SVAC\u6807\u51c6\u7684\u4e3b\u8981\u6280\u672f\u7279\u70b9\u6709\u4ee5\u4e0b\u51e0\u70b9\uff1a<\/p>\n

1\uff09\u9ad8\u7cbe\u5ea6\uff0c\u652f\u63018bit~10bit\uff1b
2\uff09\u652f\u6301\u5e27\u51854×4\u9884\u6d4b\u4e0e\u53d8\u6362\u91cf\u5316\uff0c\u652f\u6301\u81ea\u9002\u5e94\u5e27-\u573a\u7f16\u7801\uff08AFF\uff09\u548cCABAC\u7b49\u6280\u672f\u3002
3\uff09\u652f\u6301ROI\u53d8\u8d28\u91cf\u7f16\u7801\u548cSVC\u53ef\u4f38\u7f29\u7f16\u7801\u3002
4\uff09\u652f\u6301\u76d1\u63a7\u4e13\u7528\u4fe1\u606f\uff0c\u6570\u636e\u5b89\u5168\u4fdd\u62a4\u548c\u52a0\u5bc6\u8ba4\u8bc1\u3002<\/p>\n

4.15\u3001H.266\/VVC<\/span><\/p>\n

\u2002 \u2002 JVET was founded as the Joint Video Exploration Team (on Future Video coding) of ITU-T VCEG and ISO\/IEC MPEG in October 2015. After a successful call for proposals, it transitioned into the Joint Video Experts Team (also abbreviated to JVET) in April 2018 with the task to develop a new video coding standard.
The new video coding standard was named Versatile Video Coding (VVC).<\/p>\n

\u56db\u3001\u89c6\u9891\u538b\u7f29\u7f16\u7801\u7684\u57fa\u672c\u6280\u672f<\/h2>\n

\u89c6\u9891\u4fe1\u53f7\u7684\u5197\u4f59\u4fe1\u606f<\/h3>\n

\u4ee5\u8bb0\u5f55\u6570\u5b57\u89c6\u9891\u7684YUV\u5206\u91cf\u683c\u5f0f\u4e3a\u4f8b\uff0cYUV\u5206\u522b\u4ee3\u8868\u4eae\u5ea6\u4e0e\u4e24\u4e2a\u8272\u5dee\u4fe1\u53f7\u3002\u4f8b\u5982\u5bf9\u4e8e\u73b0\u6709\u7684PAL\u5236\u7535\u89c6\u7cfb\u7edf\uff0c\u5176\u4eae\u5ea6\u4fe1\u53f7\u91c7\u6837\u9891\u7387\u4e3a13.5MHz\uff1b\u8272\u5ea6\u4fe1\u53f7\u7684\u9891\u5e26\u901a\u5e38\u4e3a\u4eae\u5ea6\u4fe1\u53f7\u7684\u4e00\u534a\u6216\u66f4\u5c11\uff0c\u4e3a6.75MHz\u62163.375MHz\u3002\u4ee54\uff1a2\uff1a2\u7684\u91c7\u6837\u9891\u7387\u4e3a\u4f8b\uff0cY\u4fe1\u53f7\u91c7\u752813.5MHz\uff0c\u8272\u5ea6\u4fe1\u53f7U\u548cV\u91c7\u75286.75MHz\u91c7\u6837\uff0c\u91c7\u6837\u4fe1\u53f7\u4ee58bit\u91cf\u5316\uff0c\u5219\u53ef\u4ee5\u8ba1\u7b97\u51fa\u6570\u5b57\u89c6\u9891\u7684\u7801\u7387\u4e3a\uff1a<\/p>\n

13.5*8 + 6.75*8 + 6.75*8= 216Mbit\/s<\/p>\n

\u5982\u6b64\u5927\u7684\u6570\u636e\u91cf\u5982\u679c\u76f4\u63a5\u8fdb\u884c\u5b58\u50a8\u6216\u4f20\u8f93\u5c06\u4f1a\u9047\u5230\u5f88\u5927\u56f0\u96be\uff0c\u56e0\u6b64\u5fc5\u987b\u91c7\u7528\u538b\u7f29\u6280\u672f\u4ee5\u51cf\u5c11\u7801\u7387\u3002\u6570\u5b57\u5316\u540e\u7684\u89c6\u9891\u4fe1\u53f7\u80fd\u8fdb\u884c\u538b\u7f29\u4e3b\u8981\u4f9d\u636e\u4e24\u4e2a\u57fa\u672c\u6761\u4ef6\uff1a<\/p>\n