\u753b\u50cf\u5727\u7e2e\u6280\u8853\u3068\u306f\u4f55\u304b\u3001\u305d\u306e\u57fa\u672c\u539f\u7406\u306f\u3069\u306e\u3088\u3046\u306b\u6a5f\u80fd\u3059\u308b\u306e\u304b\uff1f
\n\u753b\u50cf\u5727\u7e2e\u6280\u8853\u3068\u306f\u3001\u753b\u50cf\u30c7\u30fc\u30bf\u306e\u5bb9\u91cf\u3092\u524a\u6e1b\u3059\u308b\u305f\u3081\u306e\u624b\u6cd5\u3067\u3059\u3002<\/p>\n
\u3053\u308c\u306b\u3088\u308a\u3001\u4fdd\u5b58\u3084\u8ee2\u9001\u306e\u969b\u306e\u30b9\u30da\u30fc\u30b9\u3084\u6642\u9593\u3092\u7bc0\u7d04\u3067\u304d\u307e\u3059\u3002<\/p>\n
\u5727\u7e2e\u6280\u8853\u306b\u306f\u4e3b\u306b\u300c\u53ef\u9006\u5727\u7e2e\u300d\u3068\u300c\u975e\u53ef\u9006\u5727\u7e2e\u300d\u306e2\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
\u53ef\u9006\u5727\u7e2e\uff08Lossless Compression\uff09<\/p>\n
\u8aac\u660e \u5727\u7e2e\u5f8c\u306e\u30c7\u30fc\u30bf\u304b\u3089\u5b8c\u5168\u306b\u5143\u306e\u753b\u50cf\u3092\u5fa9\u5143\u3067\u304d\u308b\u5727\u7e2e\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n
\u4ee3\u8868\u7684\u306a\u6280\u8853 PNG\u3084GIF\u5f62\u5f0f\u304c\u3053\u308c\u306b\u8a72\u5f53\u3057\u307e\u3059\u3002<\/p>\n
\u57fa\u672c\u539f\u7406 \u30c7\u30fc\u30bf\u306e\u5197\u9577\u6027\u3092\u5229\u7528\u3057\u307e\u3059\u3002<\/p>\n
\u4e00\u4f8b\u3068\u3057\u3066\u306f\u3001\u30e9\u30f3\u30ec\u30f3\u30b0\u30b9\u5727\u7e2e\uff08RLE\uff09\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
\u3053\u308c\u306f\u540c\u3058\u30c7\u30fc\u30bf\u304c\u9023\u7d9a\u3059\u308b\u90e8\u5206\u30921\u3064\u306e\u30c7\u30fc\u30bf\u3068\u305d\u306e\u9023\u7d9a\u56de\u6570\u3067\u8868\u73fe\u3059\u308b\u624b\u6cd5\u3067\u3059\u3002<\/p>\n
\u4ed6\u306b\u3082\u3001\u753b\u50cf\u5185\u306e\u30d1\u30bf\u30fc\u30f3\u3084\u60c5\u5831\u306e\u91cd\u8907\u3092\u5727\u7e2e\u3059\u308bZIP\u306e\u3088\u3046\u306a\u624b\u6cd5\u304c\u542b\u307e\u308c\u307e\u3059\u3002<\/p>\n
\u975e\u53ef\u9006\u5727\u7e2e\uff08Lossy Compression\uff09<\/p>\n
\u8aac\u660e \u30c7\u30fc\u30bf\u306e\u4e00\u90e8\u3092\u524a\u9664\u3057\u3001\u5b8c\u5168\u306b\u306f\u5143\u306e\u753b\u50cf\u3092\u5fa9\u5143\u3067\u304d\u306a\u3044\u5727\u7e2e\u65b9\u6cd5\u3067\u3059\u304c\u3001\u4eba\u9593\u306e\u76ee\u3067\u306f\u6c17\u4ed8\u304d\u306b\u304f\u3044\u3088\u3046\u306b\u60c5\u5831\u3092\u5931\u3046\u5de5\u592b\u304c\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u4ee3\u8868\u7684\u306a\u6280\u8853 JPEG\u5f62\u5f0f\u304c\u4e00\u822c\u7684\u3067\u3059\u3002<\/p>\n
\u57fa\u672c\u539f\u7406 \u4eba\u9593\u306e\u8996\u899a\u7279\u6027\u3092\u5229\u7528\u3057\u3001\u4eba\u9593\u306b\u306f\u611f\u77e5\u3057\u306b\u304f\u3044\u60c5\u5831\u3092\u512a\u5148\u7684\u306b\u524a\u6e1b\u3057\u307e\u3059\u3002<\/p>\n
JPEG\u3067\u7528\u3044\u3089\u308c\u308bDCT\uff08\u96e2\u6563\u30b3\u30b5\u30a4\u30f3\u5909\u63db\uff09\u306f\u3001\u753b\u50cf\u3092\u5468\u6ce2\u6570\u6210\u5206\u306b\u5206\u89e3\u3057\u307e\u3059\u3002<\/p>\n
\u9ad8\u5468\u6ce2\u6210\u5206\uff08\u7d30\u304b\u3044\u30c7\u30a3\u30c6\u30fc\u30eb\uff09\u306f\u4eba\u9593\u306e\u8996\u899a\u3067\u6271\u308f\u308c\u306b\u304f\u3044\u305f\u3081\u3001\u3053\u308c\u3089\u3092\u66f4\u306b\u5727\u7e2e\u3057\u307e\u3059\u3002<\/p>\n
\u307e\u305f\u3001\u30d6\u30ed\u30c3\u30af\u5358\u4f4d\u3067\u51e6\u7406\u3092\u884c\u3044\u3001\u91cf\u5b50\u5316\u3068\u3044\u3046\u5de5\u7a0b\u3067\u60c5\u5831\u3092\u5927\u5e45\u306b\u524a\u6e1b\u3057\u307e\u3059\u3002<\/p>\n
\u6839\u62e0\u3068\u5229\u70b9
\n– \u53ef\u9006\u5727\u7e2e\u306e\u5229\u70b9 \u30c7\u30fc\u30bf\u304c\u5b8c\u5168\u306b\u5fa9\u5143\u53ef\u80fd\u3067\u3042\u308b\u3053\u3068\u304c\u91cd\u8981\u306a\u5834\u5408\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n
\u305f\u3068\u3048\u3070\u3001\u533b\u7642\u753b\u50cf\u3084\u6cd5\u5f8b\u6587\u66f8\u306f\u60c5\u5831\u306e\u5b8c\u5168\u6027\u304c\u6c42\u3081\u3089\u308c\u308b\u305f\u3081\u3001\u53ef\u9006\u5727\u7e2e\u304c\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
– \u975e\u53ef\u9006\u5727\u7e2e\u306e\u5229\u70b9 \u5727\u7e2e\u7387\u304c\u9ad8\u304f\u3001\u30c7\u30fc\u30bf\u5bb9\u91cf\u3092\u5927\u5e45\u306b\u524a\u6e1b\u3067\u304d\u307e\u3059\u3002<\/p>\n
\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u3067\u753b\u50cf\u3092\u8fc5\u901f\u306b\u5171\u6709\u3059\u308b\u5834\u5408\u306a\u3069\u306b\u6709\u52b9\u3067\u3059\u3002<\/p>\n
\u8996\u899a\u7684\u306b\u3042\u307e\u308a\u5909\u5316\u304c\u306a\u3044\u3088\u3046\u306b\u898b\u3048\u308b\u305f\u3081\u3001\u591a\u304f\u306e\u4e00\u822c\u7684\u306a\u7528\u9014\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u79d1\u5b66\u7684\u6839\u62e0
\n– \u5fc3\u7406\u7269\u7406\u5b66 \u4eba\u9593\u306e\u8996\u899a\u306f\u9bae\u660e\u3055\u3084\u8272\u5f69\u306b\u5bfe\u3057\u3066\u920d\u611f\u306a\u7279\u6027\u3092\u6301\u3063\u3066\u304a\u308a\u3001\u3053\u308c\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u60c5\u5831\u3092\u524a\u6e1b\u3057\u3066\u3082\u8996\u899a\u7684\u306a\u9055\u3044\u304c\u611f\u3058\u3089\u308c\u306b\u304f\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n
– \u60c5\u5831\u7406\u8ad6 \u30af\u30ed\u30fc\u30c9\u30fb\u30b7\u30e3\u30ce\u30f3\u306b\u3088\u308b\u60c5\u5831\u7406\u8ad6\u3092\u57fa\u306b\u3001\u30c7\u30fc\u30bf\u5727\u7e2e\u306f\u672c\u8cea\u7684\u306b\u60c5\u5831\u306e\u5197\u9577\u6027\u306e\u524a\u6e1b\u3092\u76ee\u6307\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u3064\u307e\u308a\u3001\u4eba\u9593\u306b\u3068\u3063\u3066\u4e0d\u8981\u306a\u60c5\u5831\u3092\u9664\u53bb\u3059\u308b\u3053\u3068\u3067\u52b9\u7387\u7684\u306a\u30c7\u30fc\u30bf\u8868\u73fe\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u3053\u306e\u3088\u3046\u306a\u5727\u7e2e\u6280\u8853\u306f\u3001\u30b9\u30c8\u30ec\u30fc\u30b8\u306e\u7bc0\u7d04\u3084\u30c7\u30fc\u30bf\u8ee2\u9001\u306e\u52b9\u7387\u5316\u306b\u5bc4\u4e0e\u3057\u3001\u30c7\u30b8\u30bf\u30eb\u6642\u4ee3\u306e\u57fa\u76e4\u6280\u8853\u306e\u4e00\u3064\u3068\u3057\u3066\u6570\u3005\u306e\u5206\u91ce\u3067\u6d3b\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u3055\u307e\u3056\u307e\u306a\u753b\u50cf\u5727\u7e2e\u6280\u8853\u306e\u7a2e\u985e\u3084\u3001\u305d\u308c\u305e\u308c\u306e\u7279\u5fb4\u3068\u9055\u3044\u306f\u4f55\u304b\uff1f
\n\u753b\u50cf\u5727\u7e2e\u6280\u8853\u306f\u3001\u30c7\u30b8\u30bf\u30eb\u753b\u50cf\u306e\u4fdd\u5b58\u304a\u3088\u3073\u4f1d\u9001\u306b\u304a\u3044\u3066\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u4ee5\u4e0b\u306b\u3001\u4e3b\u8981\u306a\u753b\u50cf\u5727\u7e2e\u6280\u8853\u306e\u7a2e\u985e\u3001\u305d\u308c\u305e\u308c\u306e\u7279\u5fb4\u3001\u304a\u3088\u3073\u9055\u3044\u3092\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n
1. \u975e\u53ef\u9006\u5727\u7e2e (Lossy Compression)<\/p>\n
\u975e\u53ef\u9006\u5727\u7e2e\u306f\u3001\u30c7\u30fc\u30bf\u306e\u4e00\u90e8\u3092\u6c38\u4e45\u306b\u524a\u9664\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u5727\u7e2e\u304c\u884c\u308f\u308c\u308b\u624b\u6cd5\u3067\u3059\u3002<\/p>\n
\u3053\u306e\u5727\u7e2e\u306f\u3001\u5727\u7e2e\u5f8c\u306e\u753b\u50cf\u304c\u5143\u306e\u753b\u50cf\u3068\u5b8c\u5168\u306b\u306f\u540c\u4e00\u3067\u306f\u306a\u3044\u70b9\u304c\u7279\u5fb4\u3067\u3059\u304c\u3001\u4e00\u822c\u7684\u306b\u8996\u899a\u7684\u306b\u306f\u307b\u3068\u3093\u3069\u9055\u3044\u3092\u611f\u3058\u307e\u305b\u3093\u3002<\/p>\n
\u4e3b\u306a\u6280\u8853\u3000<\/p>\n
JPEG \u30c7\u30b8\u30bf\u30eb\u5199\u771f\u3067\u5e83\u304f\u4f7f\u7528\u3055\u308c\u308b\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3067\u3001DCT\uff08\u96e2\u6563\u30b3\u30b5\u30a4\u30f3\u5909\u63db\uff09\u3092\u4f7f\u7528\u3057\u3066\u753b\u50cf\u306e\u5468\u6ce2\u6570\u60c5\u5831\u3092\u5727\u7e2e\u3057\u307e\u3059\u3002<\/p>\n
\u5727\u7e2e\u7387\u304c\u9ad8\u304f\u3001\u5199\u771f\u753b\u50cf\u306b\u9069\u3057\u3066\u3044\u308b\u3002<\/p>\n
WebP Google\u304c\u958b\u767a\u3057\u305f\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3067\u3001JPEG\u3088\u308a\u3082\u9ad8\u3044\u5727\u7e2e\u7387\u3092\u63d0\u4f9b\u3057\u306a\u304c\u3089\u3001\u540c\u7b49\u307e\u305f\u306f\u305d\u308c\u4ee5\u4e0a\u306e\u753b\u8cea\u3092\u7dad\u6301\u3057\u307e\u3059\u3002<\/p>\n
HEIF\/HEIC Apple\u3084\u305d\u306e\u4ed6\u306e\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3067\u4f7f\u7528\u3055\u308c\u308b\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3067\u3001\u3088\u308a\u52b9\u7387\u7684\u306a\u30b9\u30c8\u30ec\u30fc\u30b8\u3068\u4f1d\u9001\u3092\u53ef\u80fd\u306b\u3057\u3064\u3064\u3001JPEG\u3088\u308a\u3082\u512a\u308c\u305f\u753b\u8cea\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n
2. \u53ef\u9006\u5727\u7e2e (Lossless Compression)<\/p>\n
\u53ef\u9006\u5727\u7e2e\u306f\u3001\u753b\u50cf\u30c7\u30fc\u30bf\u3092\u5b8c\u5168\u306b\u518d\u73fe\u53ef\u80fd\u306a\u72b6\u614b\u3067\u5727\u7e2e\u3059\u308b\u624b\u6cd5\u3067\u3059\u3002<\/p>\n
\u3053\u306e\u5834\u5408\u3001\u5727\u7e2e\u5f8c\u306e\u753b\u50cf\u306f\u3001\u30c7\u30b3\u30fc\u30c9\u3059\u308b\u3068\u5143\u306e\u753b\u50cf\u3068\u5168\u304f\u540c\u3058\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u4e3b\u306a\u6280\u8853\u3000<\/p>\n
PNG \u5727\u7e2e\u52b9\u7387\u306e\u9ad8\u3044\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3067\u3001\u7279\u306b\u30a2\u30a4\u30b3\u30f3\u3084\u56f3\u5f62\u63cf\u753b\u306b\u5229\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n
\u30a2\u30eb\u30d5\u30a1\u30c1\u30e3\u30f3\u30cd\u30eb\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u304a\u308a\u3001\u900f\u660e\u6027\u304c\u5fc5\u8981\u306a\u753b\u50cf\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
GIF \u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3067\u3001\u6700\u5927256\u8272\u3092\u4f7f\u7528\u3059\u308b\u305f\u3081\u3001\u5199\u771f\u3088\u308a\u3082\u5358\u7d14\u306a\u753b\u50cf\u3084\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u5411\u3051\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
TIFF \u4e3b\u306b\u696d\u754c\u3067\u306e\u52a0\u5de5\u3084\u4fdd\u5b58\u306b\u4f7f\u7528\u3055\u308c\u3001\u975e\u53ef\u9006\u5727\u7e2e\u3084\u53ef\u9006\u5727\u7e2e\u3092\u9078\u629e\u53ef\u80fd\u3067\u3001\u9ad8\u54c1\u8cea\u306a\u753b\u50cf\u4fdd\u5b58\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n
\u7279\u5fb4\u3068\u9055\u3044\u306e\u6bd4\u8f03<\/p>\n
\u753b\u8cea<\/p>\n
\u975e\u53ef\u9006\u5727\u7e2e\u306f\u3001\u591a\u304f\u306e\u5834\u5408\u3001\u4eba\u9593\u306e\u8996\u899a\u304c\u611f\u3058\u306b\u304f\u3044\u7bc4\u56f2\u3067\u753b\u8cea\u3092\u72a0\u7272\u306b\u3059\u308b\u304c\u3001\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u306e\u524a\u6e1b\u304c\u5927\u304d\u3044\u3002<\/p>\n
\u53ef\u9006\u5727\u7e2e\u306f\u3001\u753b\u8cea\u3092\u5b8c\u5168\u306b\u4fdd\u6301\u3059\u308b\u304c\u3001\u4e00\u822c\u306b\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u306f\u975e\u53ef\u9006\u5727\u7e2e\u3088\u308a\u3082\u5927\u304d\u3044\u3002<\/p>\n
\u4f7f\u7528\u7528\u9014<\/p>\n
\u975e\u53ef\u9006\u5727\u7e2e\u306f\u3001Web\u3084\u30b9\u30c8\u30ec\u30fc\u30b8\u5bb9\u91cf\u304c\u9650\u3089\u308c\u308b\u74b0\u5883\u3067\u306e\u5199\u771f\u3084\u52d5\u753b\u306e\u914d\u4fe1\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u53ef\u9006\u5727\u7e2e\u306f\u3001\u3042\u3089\u3086\u308b\u7de8\u96c6\u4f5c\u696d\u3001\u5370\u5237\u696d\u52d9\u3001\u307e\u305f\u306f\u7cbe\u5bc6\u306a\u753b\u50cf\u30c7\u30fc\u30bf\u306e\u4fdd\u5b58\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0<\/p>\n
\u975e\u53ef\u9006\u5727\u7e2e\u306f\u3001\u5468\u6ce2\u6570\u5909\u63db\u3068\u91cf\u5b50\u5316\u3092\u7528\u3044\u3066\u3001\u4eba\u9593\u306e\u76ee\u306b\u306a\u3058\u307f\u306b\u304f\u3044\u60c5\u5831\u3092\u524a\u9664\u3059\u308b\u3002<\/p>\n
\u53ef\u9006\u5727\u7e2e\u306f\u3001\u7e70\u308a\u8fd4\u3057\u3084\u30d1\u30bf\u30fc\u30f3\u3092\u52b9\u7387\u7684\u306b\u30a8\u30f3\u30b3\u30fc\u30c9\u3057\u3001\u5727\u7e2e\u7387\u3092\u5411\u4e0a\u3055\u305b\u308b\u3002<\/p>\n
\u6839\u62e0<\/p>\n
\u8996\u899a\u7279\u6027 \u975e\u53ef\u9006\u5727\u7e2e\u306e\u6280\u8853\u306f\u3001\u4eba\u9593\u306e\u8996\u899a\u7279\u6027\u306b\u57fa\u3065\u3044\u3066\u7d30\u90e8\u3092\u524a\u6e1b\u3059\u308b\u305f\u3081\u3001\u5fc3\u7406\u7684\u8996\u899a\u30e2\u30c7\u30eb\u3092\u5229\u7528\u3057\u307e\u3059\uff08\u4f8b JPEG\uff09\u3002<\/p>\n
\u60c5\u5831\u7406\u8ad6 \u53ef\u9006\u5727\u7e2e\u306e\u57fa\u790e\u306b\u3042\u308b\u3082\u306e\u306f\u60c5\u5831\u7406\u8ad6\u3067\u3042\u308a\u3001\u30c7\u30fc\u30bf\u306e\u30d1\u30bf\u30fc\u30f3\u3068\u898f\u5247\u6027\u3092\u5229\u7528\u3057\u3066\u5727\u7e2e\u3092\u5b9f\u73fe\u3057\u307e\u3059\u3002<\/p>\n
\u753b\u50cf\u5727\u7e2e\u6280\u8853\u306f\u3001\u52b9\u7387\u6027\u3068\u8cea\u306e\u30d0\u30e9\u30f3\u30b9\u3092\u4fdd\u3061\u306a\u304c\u3089\u3001\u7570\u306a\u308b\u30cb\u30fc\u30ba\u306b\u5fdc\u3058\u3066\u4f7f\u3044\u5206\u3051\u3089\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u9078\u629e\u3059\u308b\u6280\u8853\u306f\u3001\u5177\u4f53\u7684\u306a\u4f7f\u7528\u74b0\u5883\u3068\u76ee\u7684\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u3001\u5404\u6280\u8853\u306e\u7279\u6027\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u6700\u9069\u306a\u65b9\u6cd5\u3092\u9078\u3076\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n
\u753b\u50cf\u5727\u7e2e\u6280\u8853\u304c\u5b9f\u969b\u306e\u7528\u9014\u306b\u304a\u3044\u3066\u3069\u306e\u3088\u3046\u306b\u5fdc\u7528\u3055\u308c\u3001\u3069\u306e\u3088\u3046\u306a\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308b\u306e\u304b\uff1f
\n\u753b\u50cf\u5727\u7e2e\u6280\u8853\u306f\u3001\u30c7\u30b8\u30bf\u30eb\u753b\u50cf\u306e\u30c7\u30fc\u30bf\u30b5\u30a4\u30ba\u3092\u5c0f\u3055\u304f\u3059\u308b\u65b9\u6cd5\u3092\u6307\u3057\u3001\u591a\u5c90\u306b\u308f\u305f\u308b\u7528\u9014\u3068\u591a\u304f\u306e\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
\u4ee5\u4e0b\u3067\u306f\u3001\u753b\u50cf\u5727\u7e2e\u6280\u8853\u306e\u5177\u4f53\u7684\u306a\u5fdc\u7528\u4f8b\u3068\u305d\u306e\u5229\u70b9\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n
1. \u5fdc\u7528\u4f8b<\/p>\n
a. \u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3068\u30e2\u30d0\u30a4\u30eb\u30a2\u30d7\u30ea<\/p>\n
\u30a6\u30a7\u30d6\u30da\u30fc\u30b8\u3084\u30e2\u30d0\u30a4\u30eb\u30a2\u30d7\u30ea\u3067\u306f\u3001\u753b\u50cf\u306f\u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u4e3b\u8981\u306a\u90e8\u5206\u3092\u5360\u3081\u3066\u304a\u308a\u3001\u9ad8\u54c1\u8cea\u306a\u753b\u50cf\u3092\u4f7f\u7528\u3057\u306a\u304c\u3089\u3082\u30da\u30fc\u30b8\u306e\u8aad\u307f\u8fbc\u307f\u901f\u5ea6\u3092\u5411\u4e0a\u3055\u305b\u308b\u305f\u3081\u306b\u5727\u7e2e\u304c\u5229\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n
JPEG\u3084Pngquant\u306a\u3069\u306e\u5727\u7e2e\u6280\u8853\u3092\u7528\u3044\u3066\u3001\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u6642\u9593\u3092\u77ed\u7e2e\u3057\u3001\u30e6\u30fc\u30b6\u30fc\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u3092\u5411\u4e0a\u3055\u305b\u307e\u3059\u3002<\/p>\n
b. \u30af\u30e9\u30a6\u30c9\u30b9\u30c8\u30ec\u30fc\u30b8<\/p>\n
Google Photos\u3084iCloud\u306e\u3088\u3046\u306a\u30af\u30e9\u30a6\u30c9\u30b9\u30c8\u30ec\u30fc\u30b8\u30b5\u30fc\u30d3\u30b9\u3067\u306f\u3001\u753b\u50cf\u3092\u5727\u7e2e\u3059\u308b\u3053\u3068\u3067\u30b9\u30c8\u30ec\u30fc\u30b8\u30b9\u30da\u30fc\u30b9\u3092\u7bc0\u7d04\u3057\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u3088\u308a\u591a\u304f\u306e\u753b\u50cf\u3092\u4fdd\u5b58\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u307e\u305f\u3001\u305d\u3093\u306a\u306b\u983b\u7e41\u306b\u30a2\u30af\u30bb\u30b9\u3055\u308c\u306a\u3044\u5927\u304d\u306a\u753b\u50cf\u306e\u5834\u5408\u306f\u3001\u5727\u7e2e\u3068\u6700\u9069\u5316\u3092\u884c\u3046\u3053\u3068\u3067\u3001\u30b3\u30b9\u30c8\u52b9\u7387\u3092\u9ad8\u3081\u3066\u3044\u307e\u3059\u3002<\/p>\n
c. \u30c7\u30b8\u30bf\u30eb\u30ab\u30e1\u30e9\u3068\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3<\/p>\n
\u30c7\u30b8\u30bf\u30eb\u30ab\u30e1\u30e9\u3084\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u306e\u30ab\u30e1\u30e9\u30a2\u30d7\u30ea\u3067\u306f\u3001JPEG\u3092\u6a19\u6e96\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3068\u3057\u3066\u753b\u50cf\u3092\u4fdd\u5b58\u3059\u308b\u3053\u3068\u3067\u3001\u54c1\u8cea\u3092\u7dad\u6301\u3057\u306a\u304c\u3089\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u3092\u6e1b\u3089\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u3053\u308c\u306b\u3088\u308a\u3001\u9650\u3089\u308c\u305f\u30b9\u30c8\u30ec\u30fc\u30b8\u5bb9\u91cf\u3067\u3082\u591a\u304f\u306e\u5199\u771f\u3092\u4fdd\u5b58\u3067\u304d\u307e\u3059\u3002<\/p>\n
d. \u533b\u7642\u753b\u50cf<\/p>\n
\u533b\u7642\u73fe\u5834\u3067\u306f\u3001MRI\u3084CT\u30b9\u30ad\u30e3\u30f3\u306a\u3069\u306e\u753b\u50cf\u304c\u5de8\u5927\u306a\u30c7\u30fc\u30bf\u3092\u751f\u6210\u3057\u307e\u3059\u3002<\/p>\n
\u5727\u7e2e\u6280\u8853\u3092\u7528\u3044\u308b\u3053\u3068\u3067\u3001\u3053\u308c\u3089\u306e\u753b\u50cf\u3092\u52b9\u7387\u7684\u306b\u4fdd\u5b58\u30fb\u8ee2\u9001\u3057\u3001\u8fc5\u901f\u306a\u8a3a\u65ad\u306b\u5f79\u7acb\u3066\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u53ef\u9006\u5727\u7e2e\u6280\u8853\u304c\u7528\u3044\u3089\u308c\u308b\u3053\u3068\u304c\u591a\u304f\u3001\u30c7\u30fc\u30bf\u306e\u7cbe\u5ea6\u304c\u4fdd\u305f\u308c\u307e\u3059\u3002<\/p>\n
2. \u30e1\u30ea\u30c3\u30c8<\/p>\n
a. \u30c7\u30fc\u30bf\u8ee2\u9001\u901f\u5ea6\u306e\u5411\u4e0a<\/p>\n
\u5727\u7e2e\u3092\u884c\u3046\u3053\u3068\u3067\u3001\u753b\u50cf\u30d5\u30a1\u30a4\u30eb\u306e\u30b5\u30a4\u30ba\u304c\u5c0f\u3055\u304f\u306a\u308a\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7d4c\u7531\u3067\u306e\u8ee2\u9001\u901f\u5ea6\u304c\u5927\u5e45\u306b\u5411\u4e0a\u3057\u307e\u3059\u3002<\/p>\n
\u3053\u306e\u305f\u3081\u3001\u7279\u306b\u901a\u4fe1\u901f\u5ea6\u304c\u4f4e\u901f\u306a\u72b6\u6cc1\u3084\u3001\u5e2f\u57df\u5e45\u304c\u9650\u5b9a\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306b\u52b9\u679c\u7684\u3067\u3059\u3002<\/p>\n
b. \u30b9\u30c8\u30ec\u30fc\u30b8\u30b3\u30b9\u30c8\u306e\u524a\u6e1b<\/p>\n
\u5727\u7e2e\u3055\u308c\u305f\u753b\u50cf\u306f\u3001\u30b9\u30c8\u30ec\u30fc\u30b8\u30b9\u30da\u30fc\u30b9\u306e\u5727\u8feb\u3092\u8efd\u6e1b\u3057\u307e\u3059\u3002<\/p>\n
\u3053\u308c\u306b\u3088\u308a\u3001\u4f01\u696d\u3084\u500b\u4eba\u306f\u30c7\u30fc\u30bf\u30b9\u30c8\u30ec\u30fc\u30b8\u306e\u30b3\u30b9\u30c8\u3092\u524a\u6e1b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
\u7279\u306b\u5927\u91cf\u306e\u753b\u50cf\u3092\u6271\u3046\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306f\u3001\u5727\u7e2e\u306f\u7d4c\u6e08\u7684\u306a\u5229\u70b9\u304c\u5927\u304d\u3044\u3067\u3059\u3002<\/p>\n
c. \u54c1\u8cea\u3068\u30b5\u30a4\u30ba\u306e\u30d0\u30e9\u30f3\u30b9<\/p>\n
\u753b\u50cf\u5727\u7e2e\u306f\u3001\u54c1\u8cea\u3092\u3042\u308b\u7a0b\u5ea6\u7dad\u6301\u3057\u3064\u3064\u30c7\u30fc\u30bf\u30b5\u30a4\u30ba\u3092\u524a\u6e1b\u3059\u308b\u3088\u3046\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u975e\u53ef\u9006\u5727\u7e2e\uff08JPEG\u306a\u3069\uff09\u306f\u3001\u54c1\u8cea\u3092\u591a\u5c11\u640d\u306a\u3046\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u4e00\u822c\u7684\u306a\u7528\u9014\u3067\u306f\u8996\u899a\u7684\u306b\u6e80\u8db3\u306e\u3044\u304f\u7d50\u679c\u3092\u3082\u305f\u3089\u3057\u307e\u3059\u3002<\/p>\n
d. \u30d0\u30c3\u30c6\u30ea\u30fc\u6d88\u8cbb\u306e\u524a\u6e1b<\/p>\n
\u7279\u306b\u30e2\u30d0\u30a4\u30eb\u74b0\u5883\u3067\u306f\u3001\u30d0\u30c3\u30c6\u30ea\u30fc\u6d88\u8cbb\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n
\u5727\u7e2e\u3055\u308c\u305f\u753b\u50cf\u306f\u3001\u305d\u306e\u8ee2\u9001\u3068\u51e6\u7406\u306b\u5fc5\u8981\u306a\u30ea\u30bd\u30fc\u30b9\u304c\u5c11\u306a\u304f\u3001\u30c7\u30d0\u30a4\u30b9\u306e\u30d0\u30c3\u30c6\u30ea\u30fc\u30e9\u30a4\u30d5\u3092\u5ef6\u3070\u3059\u3053\u3068\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002<\/p>\n
3. \u6839\u62e0<\/p>\n
\u753b\u50cf\u5727\u7e2e\u6280\u8853\u306e\u5b9f\u7528\u6027\u3068\u52b9\u679c\u306f\u3001\u5b9f\u969b\u306e\u8a66\u9a13\u3068\u5927\u91cf\u306e\u7814\u7a76\u306b\u3088\u308a\u691c\u8a3c\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u753b\u50cf\u5727\u7e2e\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u591a\u304f\u306f\u3001\u60c5\u5831\u7406\u8ad6\u3084\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30d3\u30b8\u30e7\u30f3\u306e\u9818\u57df\u3067\u958b\u767a\u3055\u308c\u3001\u5b66\u8853\u7684\u306b\u5e83\u304f\u7814\u7a76\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u307e\u305f\u3001\u5927\u624b\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u4f01\u696d\u306b\u3088\u308b\u30a8\u30f3\u30c9\u30e6\u30fc\u30b6\u30fc\u5411\u3051\u306e\u5b9f\u88c5\u4f8b\u304b\u3089\u3001\u305d\u306e\u6709\u52b9\u6027\u306f\u5e83\u304f\u78ba\u7acb\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u4f8b\u3048\u3070\u3001Google\u306e\u300cGuetzli\u300d\u5727\u7e2e\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306f\u3001JPEG\u6a19\u6e96\u306b\u6e96\u62e0\u3057\u306a\u304c\u3089\u753b\u50cf\u30b5\u30a4\u30ba\u3092\u3055\u3089\u306b\u7e2e\u5c0f\u3059\u308b\u624b\u6cd5\u3092\u63d0\u4f9b\u3057\u3001\u9ad8\u54c1\u8cea\u3092\u7dad\u6301\u3059\u308b\u3053\u3068\u306e\u91cd\u8981\u6027\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u3053\u308c\u3089\u306e\u6280\u8853\u306e\u9032\u5316\u306f\u3001\u591a\u6570\u306e\u79d1\u5b66\u4f1a\u8b70\u3084\u30b8\u30e3\u30fc\u30ca\u30eb\u3067\u5831\u544a\u3055\u308c\u3001\u591a\u304f\u306e\u88fd\u54c1\u306b\u7d44\u307f\u8fbc\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u3053\u306e\u3088\u3046\u306b\u3001\u753b\u50cf\u5727\u7e2e\u6280\u8853\u306f\u3001\u30c7\u30b8\u30bf\u30eb\u30e1\u30c7\u30a3\u30a2\u306e\u52b9\u7387\u7684\u306a\u5229\u7528\u306e\u305f\u3081\u306b\u6b20\u304b\u3059\u3053\u3068\u306e\u3067\u304d\u306a\u3044\u6280\u8853\u3068\u3057\u3066\u3001\u305d\u306e\u5fdc\u7528\u7bc4\u56f2\u3092\u5e83\u3052\u3064\u3064\u3001\u3055\u307e\u3056\u307e\u306a\u9762\u3067\u306e\u30e1\u30ea\u30c3\u30c8\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u3010\u8981\u7d04\u3011
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