SAM2 \u5185\u90e8\u69cb\u9020\u30ec\u30d9\u30eb\u89e3\u8aac<\/title>\n<style>\nbody { font-family: sans-serif; line-height: 1.8; }\nh1, h2, h3 { color: #333; }\ncode { background: #eee; padding: 2px 4px; }\n<\/style>\n<\/head>\n<body>\n\n\n\n<p>\n\u3061\u3087\u3063\u3068\u52d5\u753b\u89e3\u6790\u306e\u4f9d\u983c\u304c\u3042\u3063\u3066\u3001\u7279\u5fb4\u7269\u306e\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0\u304c\u5fc5\u8981\u3060\u3063\u305f\u305f\u3081\u5bfe\u5fdc\u3067\u304d\u305d\u3046\u306aSAM2\u306b\u3064\u3044\u3066\u8a18\u8ff0\u3057\u305f\u3002SAM2 \u306f Meta \u304c\u516c\u958b\u3057\u305f\u300c\u30bb\u30b0\u30e1\u30f3\u30c6\u30fc\u30b7\u30e7\u30f3\u3068\u30de\u30b9\u30af\u8ffd\u8de1\u306e\u57fa\u76e4\u30e2\u30c7\u30eb\u300d\u3067\u3042\u308a\u3001\u52d5\u753b\u5168\u4f53\u306b\u5bfe\u3057\u3066\n<strong>\u9ad8\u7cbe\u5ea6\u30fb\u9ad8\u5b89\u5b9a\u306b\u30de\u30b9\u30af\u3092\u4f1d\u64ad\uff08Mask Propagation\uff09<\/strong> \u3067\u304d\u308b\u70b9\u304c\u6700\u5927\u306e\u7279\u5fb4\u3067\u3042\u308b\u3002\n<\/p>\n\n<p>\nSAM1 \u304c\u300c\u9759\u6b62\u753b\u306e\u4e07\u80fd\u30bb\u30b0\u30e1\u30f3\u30c6\u30fc\u30b7\u30e7\u30f3\u300d\u3067\u3042\u3063\u305f\u306e\u306b\u5bfe\u3057\u3001SAM2 \u306f\n<strong>\u52d5\u753b\u51e6\u7406\u3092\u524d\u63d0\u3068\u3057\u3066\u5185\u90e8\u69cb\u9020\u304c\u5927\u304d\u304f\u518d\u8a2d\u8a08\u3055\u308c\u3066\u3044\u308b<\/strong>\u3002\u7279\u306b\u3001\u69cb\u9020\u7269\u306e\u5fae\u5c0f\u5909\u4f4d\u8a08\u6e2c\u306e\u3088\u3046\u306a\n\u300c\u30d5\u30ec\u30fc\u30e0\u9593\u306e\u4e00\u8cab\u6027\u300d\uff08temporal consistency\uff09\u304c\u91cd\u8981\u306a\u7528\u9014\u306b\u304a\u3044\u3066\u3001\u5f93\u6765\u30e2\u30c7\u30eb\u3092\u5727\u5012\u3059\u308b\u5b89\u5b9a\u6027\u3092\u793a\u3059\u3002\n<\/p>\n\n<hr>\n\n<h2>1. SAM2 \u306e\u5168\u4f53\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u6982\u8981<\/h2>\n\n<p>SAM2 \u306f\u4ee5\u4e0b\u306e 3 \u3064\u306e\u4e3b\u8981\u30e2\u30b8\u30e5\u30fc\u30eb\u3067\u69cb\u6210\u3055\u308c\u308b\uff1a<\/p>\n\n<ol>\n <li><strong>Video Image Encoder<\/strong>\uff08\u52d5\u753b\u7279\u5fb4\u62bd\u51fa\uff09<\/li>\n <li><strong>Memory Mechanism\uff08\u9577\u671f\u77ed\u671f\u30e1\u30e2\u30ea\uff09<\/strong><\/li>\n <li><strong>Mask Decoder\uff08\u30de\u30b9\u30af\u5fa9\u53f7\/\u751f\u6210\uff09<\/strong><\/li>\n<\/ol>\n\n<p>\n\u3053\u308c\u3089\u306f\u52d5\u753b\u5168\u4f53\u3092\u9010\u6b21\u51e6\u7406\u3059\u308b\u305f\u3081\u306e\u30b9\u30c8\u30ea\u30fc\u30e0\u578b\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3092\u53d6\u3063\u3066\u304a\u308a\u3001\u5404\u30d5\u30ec\u30fc\u30e0\u306e\u51e6\u7406\u7d50\u679c\u304c\n\u300c\u30e1\u30e2\u30ea\u30d0\u30f3\u30af\u300d\u306b\u767b\u9332\u3055\u308c\u3001\u6b21\u306e\u30d5\u30ec\u30fc\u30e0\u306e\u63a8\u8ad6\u306b\u6d3b\u7528\u3055\u308c\u308b\u3002\u3053\u306e\u69cb\u9020\u306b\u3088\u308a\u3001\u96a0\u308c\u3084\u906e\u853d\uff08occlusion\uff09\u3001\n\u7167\u660e\u5909\u52d5\u3001\u7269\u4f53\u306e\u90e8\u5206\u5909\u5f62\u306b\u5f37\u304f\u306a\u308b\u3002\n<\/p>\n\n<hr>\n\n<h2>2. Video Image Encoder \u306e\u5f79\u5272<\/h2>\n\n<p>\nVideo Encoder \u306f SAM1 \u306e Image Encoder \u3092\u62e1\u5f35\u3057\u305f\u3082\u306e\u3067\u3001\u9ad8\u89e3\u50cf\u5ea6\u753b\u50cf\u3092\u7279\u5fb4\u30de\u30c3\u30d7\u306b\u5909\u63db\u3059\u308b\u3002\nSAM2 \u306e\u7279\u5fb4\u306f <strong>\u52d5\u753b\u30d5\u30ec\u30fc\u30e0\u9593\u306e\u985e\u4f3c\u6027\u3092\u5229\u7528\u3059\u308b\u8a2d\u8a08<\/strong> \u3092\u63a1\u7528\u3057\u3066\u3044\u308b\u70b9\u3067\u3042\u308b\u3002\n<\/p>\n\n<ul>\n <li>\u9ad8\u7a7a\u9593\u89e3\u50cf\u5ea6\u306e\u7279\u5fb4\uff08\u8a73\u7d30\u5f62\u72b6\uff09<\/li>\n <li>\u4f4e\u7a7a\u9593\u89e3\u50cf\u5ea6\u306e\u7279\u5fb4\uff08\u5927\u57df\u7684\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\uff09<\/li>\n<\/ul>\n\n<p>\n\u3053\u308c\u3089\u306e\u7279\u5fb4\u304c Encoder \u51fa\u529b\u3068\u3057\u3066 Memory \u306b\u6e21\u3055\u308c\u3001\u6642\u9593\u7684\u6574\u5408\u6027\u3092\u4fdd\u3064\u305f\u3081\u306e\u57fa\u76e4\u3068\u306a\u308b\u3002\n<\/p>\n\n<hr>\n\n<h2>3. Memory Mechanism\uff08SAM2 \u6700\u5927\u306e\u9769\u65b0\uff09<\/h2>\n\n<p>\nSAM2 \u306e\u6838\u306f <strong>\u30e1\u30e2\u30ea\u30d0\u30f3\u30af\uff08Memory Bank\uff09<\/strong> \u306b\u3042\u308b\u3002\u3053\u308c\u306f\u52d5\u753b\u306e\u5404\u30d5\u30ec\u30fc\u30e0\u51e6\u7406\u5f8c\u306b\n\u30de\u30b9\u30af\u3068\u7279\u5fb4\u30d9\u30af\u30c8\u30eb\u3092\u4fdd\u5b58\u3057\u3001\u5f8c\u7d9a\u30d5\u30ec\u30fc\u30e0\u3067\u53c2\u7167\u3059\u308b\u3068\u3044\u3046\u4ed5\u7d44\u307f\u3067\u3001\u5f93\u6765\u306e OpticalFlow \u30d9\u30fc\u30b9\u306e\u8ffd\u8de1\u3068\u306f\n\u5168\u304f\u9055\u3046\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u53d6\u308b\u3002\n<\/p>\n\n<h3>3.1 \u30e1\u30e2\u30ea\u306e\u69cb\u9020<\/h3>\n\n<ul>\n <li><strong>Key Memory\uff1a<\/strong> Encoder \u306e\u57cb\u3081\u8fbc\u307f\u7279\u5fb4\u305d\u306e\u3082\u306e<\/li>\n <li><strong>Value Memory\uff1a<\/strong> \u30de\u30b9\u30af\u60c5\u5831\u3092\u57cb\u3081\u8fbc\u3093\u3060\u7279\u5fb4<\/li>\n <li><strong>Temporal Index\uff1a<\/strong> \u6642\u9593\u7684\u8ddd\u96e2\u306b\u57fa\u3065\u304f\u53c2\u7167\u91cd\u307f<\/li>\n<\/ul>\n\n<p>\n\u3053\u308c\u306b\u3088\u308a SAM2 \u306f\n<strong>\u300c\u904e\u53bb\u306e\u3069\u306e\u30d5\u30ec\u30fc\u30e0\u304c\u4eca\u306e\u30d5\u30ec\u30fc\u30e0\u306b\u985e\u4f3c\u3057\u3066\u3044\u308b\u304b\u300d<\/strong>\n\u3092\u5185\u90e8\u3067\u5b66\u7fd2\u3057\u3064\u3064\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u9060\u3044\u904e\u53bb\u306e\u30d5\u30ec\u30fc\u30e0\u3092\u53c2\u7167\u3057\u3066\u30de\u30b9\u30af\u3092\u5fa9\u5143\u3067\u304d\u308b\u3002\n<\/p>\n\n<h3>3.2 \u30aa\u30af\u30eb\u30fc\u30b8\u30e7\u30f3\u8010\u6027\u306e\u7372\u5f97<\/h3>\n\n<p>\n\u5bfe\u8c61\u304c\u4e00\u6642\u7684\u306b\u96a0\u308c\u305f\u5834\u5408\u3067\u3082\u3001\u30e1\u30e2\u30ea\u304c\u904e\u53bb\u306e\u5bfe\u8c61\u306e\u7279\u5fb4\u3092\u4fdd\u6301\u3057\u3066\u3044\u308b\u305f\u3081\u3001\n<strong>\u906e\u853d \u2192 \u5fa9\u5e30<\/strong>\n\u304c\u5bb9\u6613\u306b\u306a\u308b\u3002\u3053\u308c\u306f\u69cb\u9020\u7269\u63fa\u308c\u306e\u8a08\u6e2c\u306e\u3088\u3046\u306a\u5fae\u5c0f\u5909\u4f4d\u30bf\u30b9\u30af\u3067\u6975\u3081\u3066\u6709\u52b9\u3067\u3042\u308b\u3002\n<\/p>\n\n<hr>\n\n<h2>4. Mask Decoder \u306e\u4ed5\u7d44\u307f<\/h2>\n\n<p>\nDecoder \u306f Encoder \u3068 Memory \u304b\u3089\u7279\u5fb4\u3092\u53d6\u308a\u8fbc\u307f\u3001\u73fe\u5728\u30d5\u30ec\u30fc\u30e0\u306e\u30de\u30b9\u30af\u3092\u751f\u6210\u3059\u308b\u3002\nSAM1 \u306e Mask Decoder \u3092\u5927\u5e45\u306b\u52d5\u753b\u5411\u3051\u306b\u518d\u8a2d\u8a08\u3057\u3066\u304a\u308a\u3001\u7279\u5fb4\u7684\u306a\u70b9\u306f\u4ee5\u4e0b\uff1a\n<\/p>\n\n<ul>\n <li>Memory Attention\uff08\u904e\u53bb\u30d5\u30ec\u30fc\u30e0\u3068\u306e\u76f8\u95a2\u578b\u6ce8\u610f\u6a5f\u69cb\uff09<\/li>\n <li>Prompt Attention\uff08\u521d\u671f\u30de\u30b9\u30af\u30fb\u30af\u30ea\u30c3\u30af\u30fb\u67a0\u306e\u60c5\u5831\u3092\u7d71\u5408\uff09<\/li>\n <li>Dynamic Convolution \u3092\u4f7f\u3063\u305f\u7cbe\u7dfb\u306a\u30de\u30b9\u30af\u751f\u6210<\/li>\n<\/ul>\n\n<p>\n\u305d\u306e\u7d50\u679c\u3001SAM2 \u306f\u30d5\u30ec\u30fc\u30e0\u5358\u4f4d\u306e\u72ec\u7acb\u3057\u305f\u4e88\u6e2c\u3067\u306f\u306a\u304f\u3001<strong>\u6642\u7cfb\u5217\u3068\u3057\u3066\u6ed1\u3089\u304b\u306a\u30de\u30b9\u30af<\/strong> \u3092\u51fa\u529b\u3067\u304d\u308b\u3002\n<\/p>\n\n<hr>\n\n<h2>5. SAM2 \u304c\u300c\u5fae\u5c0f\u5909\u4f4d\u8a08\u6e2c\u300d\u3068\u76f8\u6027\u304c\u826f\u3044\u7406\u7531<\/h2>\n\n<ol>\n <li><strong>\u30de\u30b9\u30af\u5883\u754c\u306e\u5b89\u5b9a\u6027<\/strong> \n SAM2 \u306f\u52d5\u753b\u5168\u4f53\u3092\u6587\u8108\u3068\u3057\u3066\u6271\u3046\u305f\u3081\u3001\u96a3\u63a5\u30d5\u30ec\u30fc\u30e0\u3067\u30de\u30b9\u30af\u5f62\u72b6\u304c\u5fae\u5999\u306b\u63fa\u3089\u3050\u3053\u3068\u304c\u5c11\u306a\u3044\u3002<\/li>\n\n <li><strong>\u91cd\u5fc3\u306e\u6642\u9593\u7684\u9023\u7d9a\u6027\u304c\u9ad8\u3044<\/strong> \n \u30de\u30b9\u30af\u306e\u5883\u754c\u304c\u5b89\u5b9a\u3059\u308c\u3070\u3001\u91cd\u5fc3\u8a08\u7b97\u306e\u8aa4\u5dee\u3082\u5c0f\u3055\u304f\u306a\u308b\u3002<\/li>\n\n <li><strong>\u660e\u6697\u5909\u52d5\u30fb\u5f71\u30fb\u30ce\u30a4\u30ba\u306b\u9811\u5f37<\/strong> \n \u52d5\u753b\u306e\u6587\u8108\u60c5\u5831\u304c\u3042\u308a\u3001\u5358\u4e00\u30d5\u30ec\u30fc\u30e0\u4f9d\u5b58\u3067\u306f\u306a\u3044\u3002<\/li>\n\n <li><strong>\u906e\u853d\u306b\u5f37\u3044<\/strong> \n \u4e00\u6642\u7684\u306b\u96a0\u308c\u3066\u3082\u5143\u306e\u4f4d\u7f6e\u3092\u5fa9\u5143\u3067\u304d\u308b\u3002<\/li>\n\n <li><strong>\u5149\u5b66\u30d5\u30ed\u30fc\u306e\u3088\u3046\u306b\u9ad8\u5468\u6ce2\u30ce\u30a4\u30ba\u304c\u6df7\u3058\u3089\u306a\u3044<\/strong> \n Pixel-level \u306e\u4e71\u6d41\u3088\u308a\u3082\u3001\u5f62\u72b6\u60c5\u5831\u306b\u57fa\u3065\u304f\u8ffd\u8de1\u304c\u4e2d\u5fc3\u3002<\/li>\n<\/ol>\n\n<p>\n\u3053\u308c\u306b\u3088\u308a\u3001\u69cb\u9020\u7269\u306e\u5909\u4f4d\u62bd\u51fa\u3067\u91cd\u8981\u306a\n<strong>1\uff5e3px \u7a0b\u5ea6\u306e\u5fae\u5c0f\u63fa\u308c<\/strong>\n\u3092\u30d6\u30ec\u306a\u304f\u6271\u3048\u308b\u3002\n<\/p>\n\n<hr>\n\n<h2>6. SAM2 \u306e\u9650\u754c\uff08\u6b63\u76f4\u306a\u8a55\u4fa1\uff09<\/h2>\n\n<ul>\n <li>\u6975\u7aef\u306b\u7d30\u3044\u90e8\u6750\uff08\u5e451\uff5e2px\uff09\u306e\u8ffd\u8de1\u306f\u82e6\u624b<\/li>\n <li>\u52d5\u753b\u304c\u9ad8\u901f\u3067\u63fa\u308c\u308b\u3068 Memory \u304c\u7834\u7dbb\u3059\u308b\u3053\u3068\u304c\u3042\u308b<\/li>\n <li>\u7cbe\u5bc6\u6e2c\u5b9a\u306b\u4f7f\u3046\u524d\u306b\u306f\u30ce\u30a4\u30ba\u9664\u53bb\uff08\u5e73\u6ed1\u5316\uff09\u304c\u5fc5\u9808<\/li>\n <li>Decoder \u306e\u6027\u8cea\u4e0a\u3001\u5c40\u6240\u7684\u306a\u30de\u30b9\u30af\u306e\u63fa\u3089\u304e\u306f\u30bc\u30ed\u306b\u306f\u3067\u304d\u306a\u3044<\/li>\n<\/ul>\n\n<p>\n<strong>\u79fb\u52d5\u5e73\u5747 + \u30d0\u30f3\u30c9\u30d1\u30b9<\/strong>\n\u306b\u3088\u3063\u3066\u6700\u7d42\u7684\u306b\u88dc\u6b63\u3055\u308c\u308b\u3002\n<\/p>\n\n<hr>\n\n<h2>7. \u307e\u3068\u3081<\/h2>\n\n<p>\nSAM2 \u306f\u52d5\u753b\u51e6\u7406\u306e\u305f\u3081\u306b\u6700\u9069\u5316\u3055\u308c\u305f\u5f37\u529b\u306a\u30bb\u30b0\u30e1\u30f3\u30c6\u30fc\u30b7\u30e7\u30f3\u30fb\u30de\u30b9\u30af\u4f1d\u64ad\u30e2\u30c7\u30eb\u3067\u3042\u308a\u3001\n\u5f93\u6765\u306e\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0\u624b\u6cd5\u3088\u308a\u3082\u5727\u5012\u7684\u306b\u5b89\u5b9a\u3057\u305f\u30de\u30b9\u30af\u3092\u751f\u6210\u3059\u308b\u3002\u7279\u306b\u3001\u69cb\u9020\u7269\u306e\n<strong>\u30df\u30ea\u30e1\u30fc\u30c8\u30eb\u7d1a\u306e\u5fae\u5c0f\u5909\u4f4d<\/strong> \u3092\u52d5\u753b\u304b\u3089\u62bd\u51fa\u3059\u308b\u969b\u306b\u306f\u3001\n\u300c\u5f62\u72b6\u306e\u4e00\u8cab\u3057\u305f\u8ffd\u8de1\u300d\u3068\u3044\u3046\u70b9\u3067\u6975\u3081\u3066\u76f8\u6027\u304c\u826f\u3044\u3002\n<\/p>\n\n<p>\n\u5185\u90e8\u3067\u306f Video Encoder \u2192 Memory \u2192 Mask Decoder \u306e\u4e09\u6bb5\u69cb\u9020\u304c\u9023\u52d5\u3057\u3001\n\u904e\u53bb\u30d5\u30ec\u30fc\u30e0\u306e\u6587\u8108\u3092\u6700\u5927\u9650\u5229\u7528\u3057\u3066\u3001\u63fa\u308c\u30fb\u9670\u5f71\u30fb\u906e\u853d\u306b\u3082\u8010\u6027\u3042\u308b\u30de\u30b9\u30af\u3092\u51fa\u529b\u3059\u308b\u3002\n<\/p>\n\n<h2>8. \u8ab2\u984c<\/h2>\n\n<p>\nSAM2 \u306e\u6709\u5229\u306a\u30dd\u30a4\u30f3\u30c8\u3060\u3051\u4e0a\u3052\u305f\u304c\u3001\u56f0\u3063\u305f\u70b9\u304c\u3044\u304f\u3064\u304b\u3042\u308b\u3002\n<strong>\u5927\u91cf\u306e\u30e1\u30e2\u30ea\u55b0\u3044<\/strong> 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\u672a\u6765\u3092\u5275\u308b\u30c7\u30b8\u30bf\u30eb\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u4f01\u696d"},"aioseo_meta_data":{"post_id":"1717","title":null,"description":null,"keywords":null,"keyphrases":{"focus":{"keyphrase":"","score":0,"analysis":{"keyphraseInTitle":{"score":0,"maxScore":9,"error":1}}},"additional":[]},"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":"","og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"Article","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":"-1","robots_max_videopreview":"-1","robots_max_imagepreview":"large","priority":null,"frequency":"default","location":null,"local_seo":null,"breadcrumb_settings":null,"limit_modified_date":false,"ai":{"faqs":[],"keyPoints":[],"titles":[],"descriptions":[],"socialPosts":{"email":[],"linkedin":[],"twitter":[],"facebook":[],"instagram":[]}},"created":"2025-11-30 00:12:48","updated":"2025-11-30 00:53:03","seo_analyzer_scan_date":null},"aioseo_breadcrumb":"<div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/beeknowledge.co.jp\" title=\"Home\">Home<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">»<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/beeknowledge.co.jp\/?cat=5\" title=\"AI\">AI<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">»<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\tSAM2\uff08Segment Anything Model 2\uff09\u6280\u8853\u89e3\u8aac\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/beeknowledge.co.jp"},{"label":"AI","link":"https:\/\/beeknowledge.co.jp\/?cat=5"},{"label":"SAM2\uff08Segment Anything Model 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{"id":1717,"date":"2025-11-30T09:39:33","date_gmt":"2025-11-30T00:39:33","guid":{"rendered":"https:\/\/beeknowledge.co.jp\/?p=1717"},"modified":"2025-11-30T09:39:34","modified_gmt":"2025-11-30T00:39:34","slug":"sam2%ef%bc%88segment-anything-model-2%ef%bc%89%e6%8a%80%e8%a1%93%e8%a7%a3%e8%aa%ac","status":"publish","type":"post","link":"https:\/\/beeknowledge.co.jp\/?p=1717","title":{"rendered":"SAM2\uff08Segment Anything Model 2\uff09\u6280\u8853\u89e3\u8aac"},"content":{"rendered":"\n\n\n\n\nSAM2 \u5185\u90e8\u69cb\u9020\u30ec\u30d9\u30eb\u89e3\u8aac<\/title>\n<style>\nbody { font-family: sans-serif; line-height: 1.8; }\nh1, h2, h3 { color: #333; }\ncode { background: #eee; padding: 2px 4px; }\n<\/style>\n<\/head>\n<body>\n\n\n\n<p>\n\u3061\u3087\u3063\u3068\u52d5\u753b\u89e3\u6790\u306e\u4f9d\u983c\u304c\u3042\u3063\u3066\u3001\u7279\u5fb4\u7269\u306e\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0\u304c\u5fc5\u8981\u3060\u3063\u305f\u305f\u3081\u5bfe\u5fdc\u3067\u304d\u305d\u3046\u306aSAM2\u306b\u3064\u3044\u3066\u8a18\u8ff0\u3057\u305f\u3002SAM2 \u306f Meta \u304c\u516c\u958b\u3057\u305f\u300c\u30bb\u30b0\u30e1\u30f3\u30c6\u30fc\u30b7\u30e7\u30f3\u3068\u30de\u30b9\u30af\u8ffd\u8de1\u306e\u57fa\u76e4\u30e2\u30c7\u30eb\u300d\u3067\u3042\u308a\u3001\u52d5\u753b\u5168\u4f53\u306b\u5bfe\u3057\u3066\n<strong>\u9ad8\u7cbe\u5ea6\u30fb\u9ad8\u5b89\u5b9a\u306b\u30de\u30b9\u30af\u3092\u4f1d\u64ad\uff08Mask Propagation\uff09<\/strong> \u3067\u304d\u308b\u70b9\u304c\u6700\u5927\u306e\u7279\u5fb4\u3067\u3042\u308b\u3002\n<\/p>\n\n<p>\nSAM1 \u304c\u300c\u9759\u6b62\u753b\u306e\u4e07\u80fd\u30bb\u30b0\u30e1\u30f3\u30c6\u30fc\u30b7\u30e7\u30f3\u300d\u3067\u3042\u3063\u305f\u306e\u306b\u5bfe\u3057\u3001SAM2 \u306f\n<strong>\u52d5\u753b\u51e6\u7406\u3092\u524d\u63d0\u3068\u3057\u3066\u5185\u90e8\u69cb\u9020\u304c\u5927\u304d\u304f\u518d\u8a2d\u8a08\u3055\u308c\u3066\u3044\u308b<\/strong>\u3002\u7279\u306b\u3001\u69cb\u9020\u7269\u306e\u5fae\u5c0f\u5909\u4f4d\u8a08\u6e2c\u306e\u3088\u3046\u306a\n\u300c\u30d5\u30ec\u30fc\u30e0\u9593\u306e\u4e00\u8cab\u6027\u300d\uff08temporal consistency\uff09\u304c\u91cd\u8981\u306a\u7528\u9014\u306b\u304a\u3044\u3066\u3001\u5f93\u6765\u30e2\u30c7\u30eb\u3092\u5727\u5012\u3059\u308b\u5b89\u5b9a\u6027\u3092\u793a\u3059\u3002\n<\/p>\n\n<hr>\n\n<h2>1. SAM2 \u306e\u5168\u4f53\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u6982\u8981<\/h2>\n\n<p>SAM2 \u306f\u4ee5\u4e0b\u306e 3 \u3064\u306e\u4e3b\u8981\u30e2\u30b8\u30e5\u30fc\u30eb\u3067\u69cb\u6210\u3055\u308c\u308b\uff1a<\/p>\n\n<ol>\n <li><strong>Video Image Encoder<\/strong>\uff08\u52d5\u753b\u7279\u5fb4\u62bd\u51fa\uff09<\/li>\n <li><strong>Memory Mechanism\uff08\u9577\u671f\u77ed\u671f\u30e1\u30e2\u30ea\uff09<\/strong><\/li>\n <li><strong>Mask Decoder\uff08\u30de\u30b9\u30af\u5fa9\u53f7\/\u751f\u6210\uff09<\/strong><\/li>\n<\/ol>\n\n<p>\n\u3053\u308c\u3089\u306f\u52d5\u753b\u5168\u4f53\u3092\u9010\u6b21\u51e6\u7406\u3059\u308b\u305f\u3081\u306e\u30b9\u30c8\u30ea\u30fc\u30e0\u578b\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3092\u53d6\u3063\u3066\u304a\u308a\u3001\u5404\u30d5\u30ec\u30fc\u30e0\u306e\u51e6\u7406\u7d50\u679c\u304c\n\u300c\u30e1\u30e2\u30ea\u30d0\u30f3\u30af\u300d\u306b\u767b\u9332\u3055\u308c\u3001\u6b21\u306e\u30d5\u30ec\u30fc\u30e0\u306e\u63a8\u8ad6\u306b\u6d3b\u7528\u3055\u308c\u308b\u3002\u3053\u306e\u69cb\u9020\u306b\u3088\u308a\u3001\u96a0\u308c\u3084\u906e\u853d\uff08occlusion\uff09\u3001\n\u7167\u660e\u5909\u52d5\u3001\u7269\u4f53\u306e\u90e8\u5206\u5909\u5f62\u306b\u5f37\u304f\u306a\u308b\u3002\n<\/p>\n\n<hr>\n\n<h2>2. Video Image Encoder \u306e\u5f79\u5272<\/h2>\n\n<p>\nVideo Encoder \u306f SAM1 \u306e Image Encoder \u3092\u62e1\u5f35\u3057\u305f\u3082\u306e\u3067\u3001\u9ad8\u89e3\u50cf\u5ea6\u753b\u50cf\u3092\u7279\u5fb4\u30de\u30c3\u30d7\u306b\u5909\u63db\u3059\u308b\u3002\nSAM2 \u306e\u7279\u5fb4\u306f <strong>\u52d5\u753b\u30d5\u30ec\u30fc\u30e0\u9593\u306e\u985e\u4f3c\u6027\u3092\u5229\u7528\u3059\u308b\u8a2d\u8a08<\/strong> \u3092\u63a1\u7528\u3057\u3066\u3044\u308b\u70b9\u3067\u3042\u308b\u3002\n<\/p>\n\n<ul>\n <li>\u9ad8\u7a7a\u9593\u89e3\u50cf\u5ea6\u306e\u7279\u5fb4\uff08\u8a73\u7d30\u5f62\u72b6\uff09<\/li>\n <li>\u4f4e\u7a7a\u9593\u89e3\u50cf\u5ea6\u306e\u7279\u5fb4\uff08\u5927\u57df\u7684\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\uff09<\/li>\n<\/ul>\n\n<p>\n\u3053\u308c\u3089\u306e\u7279\u5fb4\u304c Encoder \u51fa\u529b\u3068\u3057\u3066 Memory \u306b\u6e21\u3055\u308c\u3001\u6642\u9593\u7684\u6574\u5408\u6027\u3092\u4fdd\u3064\u305f\u3081\u306e\u57fa\u76e4\u3068\u306a\u308b\u3002\n<\/p>\n\n<hr>\n\n<h2>3. Memory Mechanism\uff08SAM2 \u6700\u5927\u306e\u9769\u65b0\uff09<\/h2>\n\n<p>\nSAM2 \u306e\u6838\u306f <strong>\u30e1\u30e2\u30ea\u30d0\u30f3\u30af\uff08Memory Bank\uff09<\/strong> \u306b\u3042\u308b\u3002\u3053\u308c\u306f\u52d5\u753b\u306e\u5404\u30d5\u30ec\u30fc\u30e0\u51e6\u7406\u5f8c\u306b\n\u30de\u30b9\u30af\u3068\u7279\u5fb4\u30d9\u30af\u30c8\u30eb\u3092\u4fdd\u5b58\u3057\u3001\u5f8c\u7d9a\u30d5\u30ec\u30fc\u30e0\u3067\u53c2\u7167\u3059\u308b\u3068\u3044\u3046\u4ed5\u7d44\u307f\u3067\u3001\u5f93\u6765\u306e OpticalFlow \u30d9\u30fc\u30b9\u306e\u8ffd\u8de1\u3068\u306f\n\u5168\u304f\u9055\u3046\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u53d6\u308b\u3002\n<\/p>\n\n<h3>3.1 \u30e1\u30e2\u30ea\u306e\u69cb\u9020<\/h3>\n\n<ul>\n <li><strong>Key Memory\uff1a<\/strong> Encoder \u306e\u57cb\u3081\u8fbc\u307f\u7279\u5fb4\u305d\u306e\u3082\u306e<\/li>\n <li><strong>Value Memory\uff1a<\/strong> \u30de\u30b9\u30af\u60c5\u5831\u3092\u57cb\u3081\u8fbc\u3093\u3060\u7279\u5fb4<\/li>\n <li><strong>Temporal Index\uff1a<\/strong> \u6642\u9593\u7684\u8ddd\u96e2\u306b\u57fa\u3065\u304f\u53c2\u7167\u91cd\u307f<\/li>\n<\/ul>\n\n<p>\n\u3053\u308c\u306b\u3088\u308a SAM2 \u306f\n<strong>\u300c\u904e\u53bb\u306e\u3069\u306e\u30d5\u30ec\u30fc\u30e0\u304c\u4eca\u306e\u30d5\u30ec\u30fc\u30e0\u306b\u985e\u4f3c\u3057\u3066\u3044\u308b\u304b\u300d<\/strong>\n\u3092\u5185\u90e8\u3067\u5b66\u7fd2\u3057\u3064\u3064\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u9060\u3044\u904e\u53bb\u306e\u30d5\u30ec\u30fc\u30e0\u3092\u53c2\u7167\u3057\u3066\u30de\u30b9\u30af\u3092\u5fa9\u5143\u3067\u304d\u308b\u3002\n<\/p>\n\n<h3>3.2 \u30aa\u30af\u30eb\u30fc\u30b8\u30e7\u30f3\u8010\u6027\u306e\u7372\u5f97<\/h3>\n\n<p>\n\u5bfe\u8c61\u304c\u4e00\u6642\u7684\u306b\u96a0\u308c\u305f\u5834\u5408\u3067\u3082\u3001\u30e1\u30e2\u30ea\u304c\u904e\u53bb\u306e\u5bfe\u8c61\u306e\u7279\u5fb4\u3092\u4fdd\u6301\u3057\u3066\u3044\u308b\u305f\u3081\u3001\n<strong>\u906e\u853d \u2192 \u5fa9\u5e30<\/strong>\n\u304c\u5bb9\u6613\u306b\u306a\u308b\u3002\u3053\u308c\u306f\u69cb\u9020\u7269\u63fa\u308c\u306e\u8a08\u6e2c\u306e\u3088\u3046\u306a\u5fae\u5c0f\u5909\u4f4d\u30bf\u30b9\u30af\u3067\u6975\u3081\u3066\u6709\u52b9\u3067\u3042\u308b\u3002\n<\/p>\n\n<hr>\n\n<h2>4. Mask Decoder \u306e\u4ed5\u7d44\u307f<\/h2>\n\n<p>\nDecoder \u306f Encoder \u3068 Memory \u304b\u3089\u7279\u5fb4\u3092\u53d6\u308a\u8fbc\u307f\u3001\u73fe\u5728\u30d5\u30ec\u30fc\u30e0\u306e\u30de\u30b9\u30af\u3092\u751f\u6210\u3059\u308b\u3002\nSAM1 \u306e Mask Decoder \u3092\u5927\u5e45\u306b\u52d5\u753b\u5411\u3051\u306b\u518d\u8a2d\u8a08\u3057\u3066\u304a\u308a\u3001\u7279\u5fb4\u7684\u306a\u70b9\u306f\u4ee5\u4e0b\uff1a\n<\/p>\n\n<ul>\n <li>Memory Attention\uff08\u904e\u53bb\u30d5\u30ec\u30fc\u30e0\u3068\u306e\u76f8\u95a2\u578b\u6ce8\u610f\u6a5f\u69cb\uff09<\/li>\n <li>Prompt Attention\uff08\u521d\u671f\u30de\u30b9\u30af\u30fb\u30af\u30ea\u30c3\u30af\u30fb\u67a0\u306e\u60c5\u5831\u3092\u7d71\u5408\uff09<\/li>\n <li>Dynamic Convolution \u3092\u4f7f\u3063\u305f\u7cbe\u7dfb\u306a\u30de\u30b9\u30af\u751f\u6210<\/li>\n<\/ul>\n\n<p>\n\u305d\u306e\u7d50\u679c\u3001SAM2 \u306f\u30d5\u30ec\u30fc\u30e0\u5358\u4f4d\u306e\u72ec\u7acb\u3057\u305f\u4e88\u6e2c\u3067\u306f\u306a\u304f\u3001<strong>\u6642\u7cfb\u5217\u3068\u3057\u3066\u6ed1\u3089\u304b\u306a\u30de\u30b9\u30af<\/strong> \u3092\u51fa\u529b\u3067\u304d\u308b\u3002\n<\/p>\n\n<hr>\n\n<h2>5. SAM2 \u304c\u300c\u5fae\u5c0f\u5909\u4f4d\u8a08\u6e2c\u300d\u3068\u76f8\u6027\u304c\u826f\u3044\u7406\u7531<\/h2>\n\n<ol>\n <li><strong>\u30de\u30b9\u30af\u5883\u754c\u306e\u5b89\u5b9a\u6027<\/strong> \n SAM2 \u306f\u52d5\u753b\u5168\u4f53\u3092\u6587\u8108\u3068\u3057\u3066\u6271\u3046\u305f\u3081\u3001\u96a3\u63a5\u30d5\u30ec\u30fc\u30e0\u3067\u30de\u30b9\u30af\u5f62\u72b6\u304c\u5fae\u5999\u306b\u63fa\u3089\u3050\u3053\u3068\u304c\u5c11\u306a\u3044\u3002<\/li>\n\n <li><strong>\u91cd\u5fc3\u306e\u6642\u9593\u7684\u9023\u7d9a\u6027\u304c\u9ad8\u3044<\/strong> \n \u30de\u30b9\u30af\u306e\u5883\u754c\u304c\u5b89\u5b9a\u3059\u308c\u3070\u3001\u91cd\u5fc3\u8a08\u7b97\u306e\u8aa4\u5dee\u3082\u5c0f\u3055\u304f\u306a\u308b\u3002<\/li>\n\n <li><strong>\u660e\u6697\u5909\u52d5\u30fb\u5f71\u30fb\u30ce\u30a4\u30ba\u306b\u9811\u5f37<\/strong> \n \u52d5\u753b\u306e\u6587\u8108\u60c5\u5831\u304c\u3042\u308a\u3001\u5358\u4e00\u30d5\u30ec\u30fc\u30e0\u4f9d\u5b58\u3067\u306f\u306a\u3044\u3002<\/li>\n\n <li><strong>\u906e\u853d\u306b\u5f37\u3044<\/strong> \n \u4e00\u6642\u7684\u306b\u96a0\u308c\u3066\u3082\u5143\u306e\u4f4d\u7f6e\u3092\u5fa9\u5143\u3067\u304d\u308b\u3002<\/li>\n\n <li><strong>\u5149\u5b66\u30d5\u30ed\u30fc\u306e\u3088\u3046\u306b\u9ad8\u5468\u6ce2\u30ce\u30a4\u30ba\u304c\u6df7\u3058\u3089\u306a\u3044<\/strong> \n Pixel-level \u306e\u4e71\u6d41\u3088\u308a\u3082\u3001\u5f62\u72b6\u60c5\u5831\u306b\u57fa\u3065\u304f\u8ffd\u8de1\u304c\u4e2d\u5fc3\u3002<\/li>\n<\/ol>\n\n<p>\n\u3053\u308c\u306b\u3088\u308a\u3001\u69cb\u9020\u7269\u306e\u5909\u4f4d\u62bd\u51fa\u3067\u91cd\u8981\u306a\n<strong>1\uff5e3px \u7a0b\u5ea6\u306e\u5fae\u5c0f\u63fa\u308c<\/strong>\n\u3092\u30d6\u30ec\u306a\u304f\u6271\u3048\u308b\u3002\n<\/p>\n\n<hr>\n\n<h2>6. SAM2 \u306e\u9650\u754c\uff08\u6b63\u76f4\u306a\u8a55\u4fa1\uff09<\/h2>\n\n<ul>\n <li>\u6975\u7aef\u306b\u7d30\u3044\u90e8\u6750\uff08\u5e451\uff5e2px\uff09\u306e\u8ffd\u8de1\u306f\u82e6\u624b<\/li>\n <li>\u52d5\u753b\u304c\u9ad8\u901f\u3067\u63fa\u308c\u308b\u3068 Memory \u304c\u7834\u7dbb\u3059\u308b\u3053\u3068\u304c\u3042\u308b<\/li>\n <li>\u7cbe\u5bc6\u6e2c\u5b9a\u306b\u4f7f\u3046\u524d\u306b\u306f\u30ce\u30a4\u30ba\u9664\u53bb\uff08\u5e73\u6ed1\u5316\uff09\u304c\u5fc5\u9808<\/li>\n <li>Decoder \u306e\u6027\u8cea\u4e0a\u3001\u5c40\u6240\u7684\u306a\u30de\u30b9\u30af\u306e\u63fa\u3089\u304e\u306f\u30bc\u30ed\u306b\u306f\u3067\u304d\u306a\u3044<\/li>\n<\/ul>\n\n<p>\n<strong>\u79fb\u52d5\u5e73\u5747 + \u30d0\u30f3\u30c9\u30d1\u30b9<\/strong>\n\u306b\u3088\u3063\u3066\u6700\u7d42\u7684\u306b\u88dc\u6b63\u3055\u308c\u308b\u3002\n<\/p>\n\n<hr>\n\n<h2>7. \u307e\u3068\u3081<\/h2>\n\n<p>\nSAM2 \u306f\u52d5\u753b\u51e6\u7406\u306e\u305f\u3081\u306b\u6700\u9069\u5316\u3055\u308c\u305f\u5f37\u529b\u306a\u30bb\u30b0\u30e1\u30f3\u30c6\u30fc\u30b7\u30e7\u30f3\u30fb\u30de\u30b9\u30af\u4f1d\u64ad\u30e2\u30c7\u30eb\u3067\u3042\u308a\u3001\n\u5f93\u6765\u306e\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0\u624b\u6cd5\u3088\u308a\u3082\u5727\u5012\u7684\u306b\u5b89\u5b9a\u3057\u305f\u30de\u30b9\u30af\u3092\u751f\u6210\u3059\u308b\u3002\u7279\u306b\u3001\u69cb\u9020\u7269\u306e\n<strong>\u30df\u30ea\u30e1\u30fc\u30c8\u30eb\u7d1a\u306e\u5fae\u5c0f\u5909\u4f4d<\/strong> \u3092\u52d5\u753b\u304b\u3089\u62bd\u51fa\u3059\u308b\u969b\u306b\u306f\u3001\n\u300c\u5f62\u72b6\u306e\u4e00\u8cab\u3057\u305f\u8ffd\u8de1\u300d\u3068\u3044\u3046\u70b9\u3067\u6975\u3081\u3066\u76f8\u6027\u304c\u826f\u3044\u3002\n<\/p>\n\n<p>\n\u5185\u90e8\u3067\u306f Video Encoder \u2192 Memory \u2192 Mask Decoder \u306e\u4e09\u6bb5\u69cb\u9020\u304c\u9023\u52d5\u3057\u3001\n\u904e\u53bb\u30d5\u30ec\u30fc\u30e0\u306e\u6587\u8108\u3092\u6700\u5927\u9650\u5229\u7528\u3057\u3066\u3001\u63fa\u308c\u30fb\u9670\u5f71\u30fb\u906e\u853d\u306b\u3082\u8010\u6027\u3042\u308b\u30de\u30b9\u30af\u3092\u51fa\u529b\u3059\u308b\u3002\n<\/p>\n\n<h2>8. \u8ab2\u984c<\/h2>\n\n<p>\nSAM2 \u306e\u6709\u5229\u306a\u30dd\u30a4\u30f3\u30c8\u3060\u3051\u4e0a\u3052\u305f\u304c\u3001\u56f0\u3063\u305f\u70b9\u304c\u3044\u304f\u3064\u304b\u3042\u308b\u3002\n<strong>\u5927\u91cf\u306e\u30e1\u30e2\u30ea\u55b0\u3044<\/strong> \u3067\u3042\u308b\u70b9\u3068\u3001<strong>GPU\u4f9d\u5b58<\/strong>\u3067\u3042\u308b\u3002\u5f8c\u8005\u306b\u95a2\u3057\u3066\u306f\u51e6\u7406\u30d5\u30ed\u30fc\u3092\u898b\u76f4\u305b\u3070\u5bfe\u5fdc\u304c\u3067\u304d\u308b\u3053\u3068\u304c\u5206\u304b\u3063\u305f\u304c\u3001\u524d\u8005\u306e\u8ab2\u984c\u3067\u6b63\u78ba\u6027\u3092\u6c42\u3081\u308b\u8ffd\u8de1\uff08FHD\u3001\uff14K\uff09\u52d5\u753b\u306e\u969b\u3001\u30de\u30b9\u30af\u9818\u57df\u304c\u5927\u304d\u3044\u3068\u901a\u5e38\u306ePC\u3067\u306f\u51e6\u7406\u304c\u3067\u304d\u306a\u3044\u3002\u3053\u306e\u70b9\u3082\u3044\u304f\u3064\u304b\u306e\u30a2\u30d7\u30ed\u30fc\u30c1\u3067\u4e00\u90e8\u89e3\u6c7a\u3067\u304d\u305f\u304c\u3001\u307e\u3060\u307e\u3060\u8003\u3048\u308b\u5fc5\u8981\u304c\u3042\u308a\u305d\u3046\u3060\u3002 \n<\/p>\n\n\n\n\n<\/body>\n<\/html>\n\n","protected":false},"excerpt":{"rendered":"<p>SAM2 \u5185\u90e8\u69cb\u9020\u30ec\u30d9\u30eb\u89e3\u8aac \u3061\u3087\u3063\u3068\u52d5\u753b\u89e3\u6790\u306e\u4f9d\u983c\u304c\u3042\u3063\u3066\u3001\u7279\u5fb4\u7269\u306e\u30c8\u30e9\u30c3\u30ad\u30f3\u30b0\u304c\u5fc5\u8981\u3060\u3063\u305f\u305f\u3081\u5bfe\u5fdc\u3067\u304d\u305d\u3046\u306aSAM2\u306b\u3064\u3044\u3066\u8a18\u8ff0\u3057\u305f\u3002SAM2 \u306f Meta \u304c\u516c\u958b\u3057\u305f\u300c\u30bb\u30b0\u30e1\u30f3\u30c6\u30fc\u30b7\u30e7\u30f3\u3068\u30de\u30b9\u30af\u8ffd\u8de1\u306e\u57fa\u76e4\u30e2\u30c7\u30eb\u300d\u3067 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"saved_in_kubio":false,"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"sns_share_botton_hide":"","vkExUnit_sns_title":"","_vk_print_noindex":"","sitemap_hide":"","vkExUnit_EyeCatch_disable":"","_veu_custom_css":"","veu_display_promotion_alert":"common","vkexunit_cta_each_option":"","_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"_lightning_design_setting":{"layout":"default"},"footnotes":"","jetpack_post_was_ever_published":false},"categories":[5,6,7,64,70],"tags":[26,40,27,51,44],"class_list":["post-1717","post","type-post","status-publish","format-standard","hentry","category-ai","category-programing","category-academic","category-64","category-70","tag-ai","tag-40","tag-27","tag-51","tag-44"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t<meta 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