{"id":68001,"date":"2017-05-16T04:30:38","date_gmt":"2017-05-16T02:30:38","guid":{"rendered":"https:\/\/www.cined.com\/?p=68001\/"},"modified":"2017-05-16T04:37:31","modified_gmt":"2017-05-16T02:37:31","slug":"chroma-subsampling","status":"publish","type":"post","link":"https:\/\/staging.cined.dev\/jp\/chroma-subsampling\/","title":{"rendered":"\u30af\u30ed\u30de\u30b5\u30d6\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u3092\u77e5\u308b \uff0d \u3044\u307e\u3055\u3089\u805e\u3051\u306a\u3044 4\uff1a2\uff1a2\u3063\u3066\u4f55\uff1f"},"content":{"rendered":"

4<\/strong>\uff1a<\/strong>2<\/strong>\uff1a<\/strong>0<\/strong>\u3001<\/strong>4<\/strong>\uff1a<\/strong>2<\/strong>\uff1a<\/strong>2<\/strong>\u3001<\/strong>4<\/strong>\uff1a<\/strong>4<\/strong>\uff1a<\/strong>4 <\/strong>\u2015\u3000\u3053\u308c\u3089\u306e\u6bd4\u7387\u306f\u3088\u304f\u4f7f\u308f\u308c\u308b\u304c\u3001\u30af\u30ed\u30de\u30b5\u30d6\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u3068\u306f\u4e00\u4f53\u4f55\u304b\u3068\u3044\u3046\u3053\u3068\u306b\u3064\u3044\u3066\u306f\u3001\u660e\u78ba\u306b\u7406\u89e3\u3055\u308c\u3066\u3044\u308b\u3060\u308d\u3046\u304b\u3002\u3053\u306e\u8a18\u4e8b\u304c\u53c2\u8003\u306b\u306a\u308c\u3070\u5e78\u3044\u3060\u3002<\/strong><\/p>\n

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4\uff1a2\uff1a2(Y\/Cb\/Cr)\u306f\u30014\uff1a4\uff1a4(RGB)\u306b\u6bd4\u30792\/3\u306e\u5e2f\u57df\u5e45\u3060\u304c\u3001\u901a\u5e38\u306e\u8996\u8074\u72b6\u6cc1\u3067\u306f\u307b\u3068\u3093\u3069\u753b\u8cea\u306f\u5909\u308f\u3089\u306a\u3044\u3068\u8a00\u3063\u3066\u3088\u3044\u3060\u308d\u3046\u3002<\/p>\n

\u8f1d\u5ea6\u4fe1\u53f7<\/strong><\/h3>\n

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\"chroma<\/p>\n

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\"chroma<\/p>\n

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    \n
  • J\uff1a\u6a2a\u65b9\u5411\u306e\u30b5\u30f3\u30d7\u30eb\u306e\u57fa\u672c\u6570\u3002\u901a\u5e38\u306f\uff14\u3002<\/li>\n
  • a\uff1a1\u30e9\u30a4\u30f3\u76ee\u306eJ\u306b\u73fe\u308c\u308b\u8272\u4fe1\u53f7\u30b5\u30f3\u30d7\u30eb\u306e\u6570\u3002<\/li>\n
  • b\uff1a1\u30e9\u30a4\u30f3\u76ee\u30682\u30e9\u30a4\u30f3\u76ee\u3067\u306e\u5909\u5316\u6570<\/li>\n<\/ul>\n

    \"chromasubsampling<\/p>\n

    \u53c2\u7167\uff1aWikipedia<\/p>\n

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    \u8003\u616e\u3059\u3079\u304d\u70b9<\/strong><\/h3>\n

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    \u3061\u3087\u3063\u3068\u6280\u8853\u7684\u306a\u3053\u3068\u3067\u96e3\u3057\u3044\u304b\u3082\u3057\u308c\u306a\u3044\u304c\u3001\u3054\u81ea\u5206\u306e\u4f5c\u54c1\u306e\u753b\u8cea\u306b\u5f71\u97ff\u3059\u308b\u3053\u3068\u306a\u306e\u3067\u3001\u77e5\u3063\u3066\u304a\u3044\u3066\u640d\u306f\u306a\u3044\u3060\u308d\u3046\u3002<\/p>\n<68001-main-buylinks\/>","protected":false,"clean_render":"

    4<\/strong>\uff1a<\/strong>2<\/strong>\uff1a<\/strong>0<\/strong>\u3001<\/strong>4<\/strong>\uff1a<\/strong>2<\/strong>\uff1a<\/strong>2<\/strong>\u3001<\/strong>4<\/strong>\uff1a<\/strong>4<\/strong>\uff1a<\/strong>4 <\/strong>\u2015\u3000\u3053\u308c\u3089\u306e\u6bd4\u7387\u306f\u3088\u304f\u4f7f\u308f\u308c\u308b\u304c\u3001\u30af\u30ed\u30de\u30b5\u30d6\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u3068\u306f\u4e00\u4f53\u4f55\u304b\u3068\u3044\u3046\u3053\u3068\u306b\u3064\u3044\u3066\u306f\u3001\u660e\u78ba\u306b\u7406\u89e3\u3055\u308c\u3066\u3044\u308b\u3060\u308d\u3046\u304b\u3002\u3053\u306e\u8a18\u4e8b\u304c\u53c2\u8003\u306b\u306a\u308c\u3070\u5e78\u3044\u3060\u3002<\/strong><\/p>\n

    \u6620\u50cf\u5727\u7e2e<\/h3>\n

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    \u3054\u5b58\u77e5\u306e\u3088\u3046\u306b\u3001\u6620\u50cf\u4fe1\u53f7\u306fRGB\u3067\u3082\u8868\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u3057\u304b\u3057\u3001\u4eba\u9593\u306e\u76ee\u306f\u8272\u3088\u308a\u3082\u660e\u308b\u3055\u306b\u5bfe\u3057\u3066\u654f\u611f\u306a\u306e\u3067\u3001\u8f1d\u5ea6\u4fe1\u53f7\uff08Y\uff09\u3068\uff12\u3064\u306e\u8272\u4fe1\u53f7\uff08Cb\u3001Cr\uff09\u3092\u5225\u3005\u306b\u6271\u3063\u305f\u307b\u3046\u304c\u52b9\u7387\u304c\u826f\u3044\u3002\u3053\u3046\u3059\u308b\u3053\u3068\u3067\u3001\u8272\u4fe1\u53f7\u306e\u89e3\u50cf\u5ea6\u3092\u843d\u3068\u3057\u3066\u3082\u3001\u8f1d\u5ea6\u4fe1\u53f7\u306e\u89e3\u50cf\u5ea6\u306f\u843d\u3061\u305a\u3001\u7d50\u679c\u7684\u306b\u9ad8\u753b\u8cea\u306e\u6620\u50cf\u304c\u5f97\u3089\u308c\u308b\u306e\u3067\u3042\u308b\u3002<\/p>\n

    4\uff1a2\uff1a2(Y\/Cb\/Cr)\u306f\u30014\uff1a4\uff1a4(RGB)\u306b\u6bd4\u30792\/3\u306e\u5e2f\u57df\u5e45\u3060\u304c\u3001\u901a\u5e38\u306e\u8996\u8074\u72b6\u6cc1\u3067\u306f\u307b\u3068\u3093\u3069\u753b\u8cea\u306f\u5909\u308f\u3089\u306a\u3044\u3068\u8a00\u3063\u3066\u3088\u3044\u3060\u308d\u3046\u3002<\/p>\n

    \u8f1d\u5ea6\u4fe1\u53f7<\/strong><\/h3>\n

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    \"chroma<\/p>\n

    \u8272\u4fe1\u53f7<\/strong><\/p>\n

    \u8272\u4fe1\u53f7\uff08\u30af\u30ed\u30de\u3068\u304bC\u306a\u3069\u3068\u3082\u8868\u8a18\u3059\u308b\uff09\u306f\u6620\u50cf\u306e\u8272\u306e\u307f\u306e\u60c5\u5831\u3060\u3002<\/p>\n

    \u8272\u4fe1\u53f7\u306f\u901a\u5e38\u4e8c\u3064\u306e\u6210\u5206\u3001Cb=B-Y\uff08B:Blue\u3001Y:\u8f1d\u5ea6\uff09\u3068Cr=R-Y\uff08R:Red\u3001Y\uff1a\u8f1d\u5ea6\uff09\u304b\u3089\u69cb\u6210\u3055\u308c\u308b\u3002<\/p>\n

    \"chroma<\/p>\n

    Cr\u3068Cb\u306f-1\u304b\u30891\u306e\u7bc4\u56f2\u3067\u8868\u3055\u308c\u308b<\/p>\n

    \u30b5\u30f3\u30d7\u30ea\u30f3\u30b0<\/strong><\/h3>\n

    \u30b5\u30d6\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u306fJ\uff1aa\uff1ab\u306e3\u3064\u306e\u30d1\u30fc\u30c8\u306e\u6bd4\uff08\u4f8b\u3048\u30704\uff1a2\uff1a2\uff09\u3067\u8868\u73fe\u3055\u308c\u308b\u304c\u3001\u3053\u308c\u306f\u6a2a\u65b9\u5411\uff14\u753b\u7d20\u3001\u7e26\u65b9\u5411\uff12\u753b\u7d20\u306e\u7bc4\u56f2\u3067\u3001\u8f1d\u5ea6\u4fe1\u53f7\u3068\u8272\u4fe1\u53f7\u306e\u30b5\u30f3\u30d7\u30eb\u306e\u73fe\u308c\u65b9\u3092\u793a\u3057\u305f\u3082\u306e\u3067\u3042\u308b\u3002<\/p>\n

      \n
    • J\uff1a\u6a2a\u65b9\u5411\u306e\u30b5\u30f3\u30d7\u30eb\u306e\u57fa\u672c\u6570\u3002\u901a\u5e38\u306f\uff14\u3002<\/li>\n
    • a\uff1a1\u30e9\u30a4\u30f3\u76ee\u306eJ\u306b\u73fe\u308c\u308b\u8272\u4fe1\u53f7\u30b5\u30f3\u30d7\u30eb\u306e\u6570\u3002<\/li>\n
    • b\uff1a1\u30e9\u30a4\u30f3\u76ee\u30682\u30e9\u30a4\u30f3\u76ee\u3067\u306e\u5909\u5316\u6570<\/li>\n<\/ul>\n

      \"chromasubsampling<\/p>\n

      \u53c2\u7167\uff1aWikipedia<\/p>\n

      \u5373\u3061\u30014\uff1a2\uff1a2\u3068\u3044\u3046\u306e\u306f\u3001\u6a2a4\u30d4\u30af\u30bb\u30eb\u3001\u7e262\u30d4\u30af\u30bb\u30eb\u306e\u57fa\u672c\u5358\u4f4d\u306e\u4e2d\u3067\u30011\u30e9\u30a4\u30f3\u76ee\u306b\uff12\u3064\u306e\u8272\u60c5\u5831\u304c\u3042\u308a\u30011\u30e9\u30a4\u30f3\u30682\u30e9\u30a4\u30f3\u3067\u306f2\u56de\u5909\u5316\uff08\u6a2a\u65b9\u5411\u306e\u6700\u521d\u306e2\u30d4\u30af\u30bb\u30eb\u30671\u56de\u3001\u5f8c\u308d\u306e2\u30d4\u30af\u30bb\u30eb\u3067\u3082\u3046\uff11\u56de\u3067\u8a08\uff12\u56de\uff09\u304c\u3042\u308b\u3068\u3044\u3046\u610f\u5473\u3002<\/p>\n

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      \u8003\u616e\u3059\u3079\u304d\u70b9<\/strong><\/h3>\n

      \u30b5\u30d6\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u306b\u3088\u3063\u3066\u3001\u975e\u5727\u7e2e\u306e\u6620\u50cf\u30c7\u30fc\u30bf\u91cf\u3092\u3001\u305d\u308c\u307b\u3069\u753b\u8cea\u52a3\u5316\u7121\u3057\u306b50%\u306b\u3059\u308b\u3053\u3068\u3082\u5bb9\u6613\u306b\u3067\u304d\u308b\u3002<\/p>\n

      \u3057\u304b\u3057\u3001\u30dd\u30b9\u30c8\u30d7\u30ed\u30c0\u30af\u30b7\u30e7\u30f3\u3067\u51e6\u7406\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u8272\u4fe1\u53f7\u306e\u60c5\u5831\u306f\u3067\u304d\u308b\u3060\u3051\u591a\u3044\u65b9\u304c\u826f\u3044\u3002\u4f8b\u3048\u3070\u9ad8\u753b\u8cea\u306e\u30af\u30ed\u30de\u30ad\u30fc\u3092\u884c\u3046\u5834\u5408\u306b\u306f\u3001\u8272\u4fe1\u53f7\u306e\u30d5\u30eb\u5e2f\u57df\u304c\u5fc5\u8981\u3060\u3057\u3001\u8272\u306e\u51e6\u7406\u3092\u3059\u308b\u5834\u5408\u306b\u306f\u3001\u5e38\u306b\u5e83\u5e2f\u57df\u306e\u8272\u60c5\u5831\u304c\u6c42\u3081\u3089\u308c\u308b\u3002<\/p>\n

      \u306a\u304a\u3001\u6620\u50cf\u5727\u7e2e\u306e\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306b\u3088\u3063\u3066\u306f\u3001\u8272\u4fe1\u53f7\u304c\u5931\u308f\u308c\u308b\u5834\u5408\u3082\u3042\u308b\u3002\u6620\u50cf\u5727\u7e2e\u306e\u524d\u306b\u30af\u30ed\u30de\u30b5\u30d6\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u3092\u884c\u3046\u3068\u3001\u6620\u50cf\u5727\u7e2e\u3067\u4f7f\u308f\u308c\u308b\u3079\u304d\u8272\u60c5\u5831\u304c\u5931\u308f\u308c\u3066\u3057\u307e\u3044\u3001\u9ad8\u753b\u8cea\u306e\u5727\u7e2e\u304c\u3067\u304d\u306a\u304f\u306a\u3063\u3066\u3057\u307e\u3046\u5834\u5408\u304c\u3042\u308b\u306e\u3060\u3002<\/p>\n

      \u91cd\u8981\u306a\u3053\u3068\u306f\u3001\u7528\u9014\u306b\u5408\u3063\u305f\u30b5\u30d6\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u65b9\u5f0f\u3092\u9078\u3076\u5fc5\u8981\u304c\u3042\u308b\u3068\u3044\u3046\u3053\u3068\u3060\u3002<\/p>\n

      DSLR\u3092\u4f7f\u3046\u3088\u3046\u306a\u7c21\u5358\u306a\u64ae\u5f71\u306a\u3089\u3001\u5834\u5408\u306b\u3088\u3063\u30664\uff1a1\uff1a1\u30844\uff1a2\uff1a0\u3067\u3082\u5341\u5206\u3060\u3057\u3001\u30dd\u30b9\u30c8\u30d7\u30ed\u30c0\u30af\u30b7\u30e7\u30f3\u3067\u8272\u51e6\u7406\u3092\u3059\u308b\u306e\u306a\u3089\u30014\uff1a2\uff1a2\u304c\u5fc5\u8981\u3060\u3002\u3042\u308b\u3044\u306f\u3082\u3063\u3068\u9ad8\u5ea6\u306a\u8272\u51e6\u7406\u3092\u3059\u308b\u5834\u5408\u306f\u3001\u30d5\u30eb\u5e2f\u57df\u306e\u8272\u60c5\u5831\u304c\u5fc5\u8981\u3060\u308d\u3046\u3002<\/p>\n

      \u305d\u3057\u3066\u4e0b\u304b\u3089\u4e0a\u3078\u306e\u5909\u63db\u3067\u3001\u753b\u8cea\u304c\u5411\u4e0a\u3059\u308b\u3068\u3044\u3046\u3053\u3068\u306f\u6c7a\u3057\u3066\u7121\u3044\u3001\u3068\u3044\u3046\u3053\u3068\u3082\u982d\u306b\u5165\u308c\u3066\u304a\u3053\u3046\u3002\u4e00\u65e64\uff1a1\uff1a1\u30844\uff1a2\uff1a0\u3067\u53ce\u9332\u3057\u305f\u3082\u306e\u306f4\uff1a2\uff1a2\u306b\u5909\u63db\u3067\u304d\u305f\u3068\u3057\u3066\u3082\u3001\u5931\u308f\u308c\u305f\u60c5\u5831\u306f\u8ffd\u52a0\u3055\u308c\u306a\u3044\u306e\u3060\u3002<\/p>\n

      \u30ab\u30e1\u30e9\u3092\u8cfc\u5165\u3059\u308b\u3068\u304d\u306f\u3001\u81ea\u5206\u306e\u7528\u9014\u3092\u8003\u3048\u305f\u3046\u3048\u3067\u3001\u5fc5\u305a\u3069\u306e\u3088\u3046\u306a\u8a18\u9332\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u304c\u4f7f\u308f\u308c\u3066\u3044\u308b\u306e\u304b\u30c1\u30a7\u30c3\u30af\u3057\u3088\u3046\u3002<\/p>\n

      \u3061\u3087\u3063\u3068\u6280\u8853\u7684\u306a\u3053\u3068\u3067\u96e3\u3057\u3044\u304b\u3082\u3057\u308c\u306a\u3044\u304c\u3001\u3054\u81ea\u5206\u306e\u4f5c\u54c1\u306e\u753b\u8cea\u306b\u5f71\u97ff\u3059\u308b\u3053\u3068\u306a\u306e\u3067\u3001\u77e5\u3063\u3066\u304a\u3044\u3066\u640d\u306f\u306a\u3044\u3060\u308d\u3046\u3002<\/p>\n<68001-main-buylinks\/>"},"excerpt":{"rendered":"

      4\uff1a2\uff1a0\u30014\uff1a2\uff1a2\u30014\uff1a4\uff1a4 \u2015\u3000\u3053\u308c\u3089\u306e\u6bd4\u7387\u306f\u3088\u304f\u4f7f\u308f\u308c\u308b\u304c\u3001\u30af\u30ed\u30de\u30b5\u30d6\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u3068\u306f\u4e00\u4f53\u4f55\u304b\u3068\u3044\u3046\u3053\u3068\u306b\u3064\u3044\u3066\u306f\u3001\u660e\u78ba\u306b\u7406\u89e3\u3055\u308c\u3066\u3044\u308b\u3060\u308d\u3046\u304b\u3002\u3053\u306e\u8a18\u4e8b\u304c\u53c2\u8003\u306b\u306a\u308c\u3070\u5e78\u3044\u3060\u3002 \u6620\u50cf\u5727\u7e2e 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to Grips with Chroma Sub Sampling<\/title>\n<meta name=\"description\" content=\"\u30af\u30ed\u30de\u30b5\u30d6\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u3092\u77e5\u308b \uff0d \u3044\u307e\u3055\u3089\u805e\u3051\u306a\u3044 4\uff1a2\uff1a2\u3063\u3066\u4f55\uff1f 4\uff1a2\uff1a0\u30014\uff1a2\uff1a2\u30014\uff1a4\uff1a4 \u2015\u3000\u3053\u308c\u3089\u306e\u6bd4\u7387\u306f\u3088\u304f\u4f7f\u308f\u308c\u308b\u304c\u3001\u30af\u30ed\u30de\u30b5\u30d6\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u3068\u306f\u4e00\u4f53\u4f55\u304b\u3068\u3044\u3046\u3053\u3068\u306b\u3064\u3044\u3066\u306f\u3001\u660e\u78ba\u306b\u7406\u89e3\u3055\u308c\u3066\u3044\u308b\u3060\u308d\u3046\u304b\u3002\u3053\u306e\u8a18\u4e8b\u304c\u53c2\u8003\u306b\u306a\u308c\u3070\u5e78\u3044\u3060\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/staging.cined.dev\/jp\/chroma-subsampling\/\" \/>\n<meta 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