{"id":135574,"date":"2025-11-22T07:36:29","date_gmt":"2025-11-21T22:36:29","guid":{"rendered":"https:\/\/adtechmanagement.com\/minnadepr-column\/?p=135574"},"modified":"2025-11-22T07:36:29","modified_gmt":"2025-11-21T22:36:29","slug":"hosen","status":"publish","type":"post","link":"https:\/\/adtechmanagement.com\/minnadepr-column\/2025\/11\/22\/hosen\/","title":{"rendered":"\u6cd5\u7dda\u3068\u306f\uff1f\u610f\u5473\u30fb\u6570\u5b66\u30fb\u7269\u7406\u30fb3D\u30fb\u5de5\u5b66\u3078\u306e\u5fdc\u7528\u3092\u5fb9\u5e95\u89e3\u8aac"},"content":{"rendered":"

\u300c\u6cd5\u7dda\u300d\u3068\u3044\u3046\u8a00\u8449\u306f\u3001\u6570\u5b66\u3084\u7269\u7406\u3001\u5de5\u5b66\u30013D\u30b0\u30e9\u30d5\u30a3\u30c3\u30af\u30b9\u306a\u3069\u5e45\u5e83\u3044\u5206\u91ce\u3067\u7528\u3044\u3089\u308c\u307e\u3059\u3002\u76f4\u611f\u7684\u306b\u306f\u300c\u9762\u306b\u5bfe\u3057\u3066\u5782\u76f4\u306a\u7dda\u300d\u3068\u3044\u3046\u610f\u5473\u3067\u3059\u304c\u3001\u5fdc\u7528\u7bc4\u56f2\u306f\u5e83\u304f\u3001\u8a2d\u8a08\u3084\u89e3\u6790\u3001CG\u5236\u4f5c\u3001\u65e5\u5e38\u306e\u79d1\u5b66\u7406\u89e3\u306b\u3082\u5f79\u7acb\u3064\u6982\u5ff5\u3067\u3059\u3002\u672c\u8a18\u4e8b\u3067\u306f\u6cd5\u7dda\u306e\u57fa\u672c\u7684\u306a\u610f\u5473\u304b\u3089\u3001\u6570\u5b66\u7684\u5b9a\u7fa9\u3001\u7269\u7406\u7684\u5fdc\u7528\u30013D\u3084\u5de5\u5b66\u3067\u306e\u5229\u7528\u4f8b\u307e\u3067\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n

1. \u6cd5\u7dda\u306e\u57fa\u672c\u7684\u306a\u610f\u5473<\/h2>\n

1-1. \u8a00\u8449\u3068\u3057\u3066\u306e\u5b9a\u7fa9<\/h3>\n

\u6cd5\u7dda\u3068\u306f\u3001\u3042\u308b\u9762\u3084\u66f2\u7dda\u306b\u5bfe\u3057\u3066\u5782\u76f4\u306b\u4ea4\u308f\u308b\u76f4\u7dda\u3092\u6307\u3057\u307e\u3059\u3002
\n\u300c\u6cd5\u300d\u306f\u898f\u7bc4\u3084\u57fa\u6e96\u3001\u300c\u7dda\u300d\u306f\u7dda\u3092\u610f\u5473
\n\u82f1\u8a9e\u3067\u306f\u201cnormal line\u201d\u3068\u8868\u8a18\u3055\u308c\u308b
\n\u7c21\u5358\u306b\u8a00\u3048\u3070\u3001\u9762\u306b\u5bfe\u3057\u306690\u5ea6\u3067\u4ea4\u308f\u308b\u7dda\u306e\u3053\u3068\u3067\u3059\u3002\u65e5\u5e38\u751f\u6d3b\u3067\u306f\u3042\u307e\u308a\u610f\u8b58\u3055\u308c\u307e\u305b\u3093\u304c\u3001\u6570\u5b66\u3084\u7269\u7406\u3001\u30c7\u30b6\u30a4\u30f3\u306e\u4e16\u754c\u3067\u306f\u6975\u3081\u3066\u91cd\u8981\u306a\u6982\u5ff5\u3067\u3059\u3002<\/p>\n

1-2. \u65e5\u5e38\u3067\u306e\u76f4\u611f\u7684\u7406\u89e3<\/h3>\n

\u5e73\u3089\u306a\u30c6\u30fc\u30d6\u30eb\u306b\u7acb\u3066\u308b\u30da\u30f3\u3092\u60f3\u50cf\u3059\u308b\u3068\u3001\u30c6\u30fc\u30d6\u30eb\u9762\u306b\u5782\u76f4\u306a\u7dda\u304c\u6cd5\u7dda
\n\u58c1\u306b\u7acb\u3066\u305f\u68d2\u3082\u3001\u58c1\u306b\u5bfe\u3057\u3066\u5782\u76f4\u306a\u3089\u6cd5\u7dda
\n\u7269\u4f53\u306e\u50be\u304d\u3084\u63a5\u89e6\u306e\u65b9\u5411\u3092\u8003\u3048\u308b\u3068\u304d\u306b\u5f79\u7acb\u3064<\/p>\n

2. \u6570\u5b66\u306b\u304a\u3051\u308b\u6cd5\u7dda<\/h2>\n

2-1. \u5e73\u9762\u306e\u6cd5\u7dda<\/h3>\n

\u5e73\u9762\u4e0a\u306e\u6cd5\u7dda\u306f\u3001\u5e73\u9762\u306b\u5782\u76f4\u306a\u30d9\u30af\u30c8\u30eb\u3068\u3057\u3066\u8868\u73fe\u3055\u308c\u307e\u3059\u3002
\n\u5e73\u9762\u306e\u65b9\u7a0b\u5f0f\uff1aax + by + cz + d = 0
\n\u6cd5\u7dda\u30d9\u30af\u30c8\u30eb\uff1a(a, b, c)
\n\u3053\u306e\u30d9\u30af\u30c8\u30eb\u306b\u6cbf\u3063\u305f\u7dda\u304c\u9762\u306b\u5782\u76f4\u306b\u4ea4\u308f\u308b<\/p>\n

2-2. \u66f2\u7dda\u306e\u6cd5\u7dda<\/h3>\n

\u66f2\u7dda\u306b\u304a\u3051\u308b\u6cd5\u7dda\u306f\u3001\u63a5\u7dda\u306b\u5782\u76f4\u306a\u7dda\u3068\u3057\u3066\u5b9a\u7fa9\u3055\u308c\u307e\u3059\u3002
\n\u66f2\u7dda\u306e\u63a5\u7dda\u306e\u50be\u304d\u3092\u6c42\u3081\u3001\u305d\u306e\u5782\u76f4\u65b9\u5411\u304c\u6cd5\u7dda
\n\u5fae\u5206\u3092\u7528\u3044\u308b\u3053\u3068\u3067\u6cd5\u7dda\u306e\u65b9\u7a0b\u5f0f\u3092\u7b97\u51fa\u53ef\u80fd
\n\u4f8b\uff1ay = f(x) \u306e\u66f2\u7dda\u3067\u306f\u63a5\u7dda\u306e\u50be\u304d f'(x)\u3001\u6cd5\u7dda\u306e\u50be\u304d -1\/f'(x)<\/p>\n

2-3. \u66f2\u9762\u306e\u6cd5\u7dda<\/h3>\n

3\u6b21\u5143\u66f2\u9762\u306b\u5bfe\u3057\u3066\u3082\u6cd5\u7dda\u306f\u5b9a\u7fa9\u3067\u304d\u307e\u3059\u3002
\n\u66f2\u9762 z = f(x, y) \u306b\u5bfe\u3059\u308b\u6cd5\u7dda\u30d9\u30af\u30c8\u30eb\u306f (-\u2202f\/\u2202x, -\u2202f\/\u2202y, 1)
\n\u9762\u306b\u5782\u76f4\u306a\u65b9\u5411\u3092\u793a\u3059\u30d9\u30af\u30c8\u30eb\u3068\u3057\u3066\u89e3\u6790\u3084\u8a2d\u8a08\u306b\u7528\u3044\u3089\u308c\u308b
\n\u591a\u69d8\u306a\u66f2\u9762\u3067\u6cd5\u7dda\u30d9\u30af\u30c8\u30eb\u3092\u6c42\u3081\u308b\u3053\u3068\u306f\u3001\u5149\u306e\u53cd\u5c04\u3084\u529b\u5b66\u8a08\u7b97\u306b\u4e0d\u53ef\u6b20<\/p>\n

3. \u7269\u7406\u5b66\u306b\u304a\u3051\u308b\u6cd5\u7dda<\/h2>\n

3-1. \u529b\u5b66\u3067\u306e\u6cd5\u7dda<\/h3>\n

\u7269\u4f53\u3068\u9762\u306e\u63a5\u89e6\u70b9\u306b\u304a\u3051\u308b\u5782\u76f4\u6297\u529b\u3092\u8003\u3048\u308b\u969b\u306b\u6cd5\u7dda\u306f\u91cd\u8981\u3067\u3059\u3002
\n\u6cd5\u7dda\u65b9\u5411\uff1a\u7269\u4f53\u304c\u9762\u306b\u62bc\u3055\u308c\u308b\u529b\u306e\u5782\u76f4\u6210\u5206
\n\u63a5\u7dda\u65b9\u5411\uff1a\u6469\u64e6\u529b\u306e\u65b9\u5411
\n\u4f8b\uff1a\u7bb1\u3092\u50be\u659c\u9762\u3067\u62bc\u3059\u3068\u3001\u5782\u76f4\u65b9\u5411\u306e\u529b\u306f\u6cd5\u7dda\u306b\u6cbf\u3063\u3066\u4f5c\u7528<\/p>\n

3-2. \u885d\u7a81\u3068\u53cd\u5c04<\/h3>\n

\u53cd\u5c04\u89d2\u306e\u8a08\u7b97\u3084\u5f3e\u9053\u8a08\u7b97\u3067\u6cd5\u7dda\u306f\u4e0d\u53ef\u6b20
\n\u5149\u3084\u97f3\u306e\u53cd\u5c04\u3067\u306f\u3001\u5165\u5c04\u89d2 = \u53cd\u5c04\u89d2\u304c\u6cd5\u7dda\u3092\u57fa\u6e96\u306b\u8a08\u7b97\u3055\u308c\u308b
\n\u65e5\u5e38\u3067\u306f\u93e1\u3084\u6c34\u9762\u306b\u5149\u304c\u53cd\u5c04\u3059\u308b\u969b\u306b\u6cd5\u7dda\u304c\u57fa\u6e96\u306b\u306a\u308b<\/p>\n

3-3. \u6d41\u4f53\u529b\u5b66\u3068\u5727\u529b<\/h3>\n

\u9762\u306b\u5782\u76f4\u306b\u4f5c\u7528\u3059\u308b\u5727\u529b\u306f\u6cd5\u7dda\u65b9\u5411
\n\u8239\u8236\u3084\u822a\u7a7a\u6a5f\u306e\u8a2d\u8a08\u3067\u306f\u3001\u6cd5\u7dda\u65b9\u5411\u306e\u529b\u3092\u89e3\u6790\u3059\u308b\u3053\u3068\u3067\u69cb\u9020\u5b89\u5168\u6027\u3092\u78ba\u4fdd
\n\u7269\u4f53\u306e\u8868\u9762\u306b\u5bfe\u3059\u308b\u5727\u529b\u5206\u5e03\u89e3\u6790\u306b\u4e0d\u53ef\u6b20<\/p>\n

4. 3D\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fc\u30b0\u30e9\u30d5\u30a3\u30c3\u30af\u30b9\u306b\u304a\u3051\u308b\u6cd5\u7dda<\/h2>\n

4-1. \u6cd5\u7dda\u306e\u5f79\u5272<\/h3>\n

\u9762\u306e\u5411\u304d\u3084\u5149\u306e\u53cd\u5c04\u65b9\u5411\u3092\u6c7a\u5b9a
\n\u30b7\u30a7\u30fc\u30c7\u30a3\u30f3\u30b0\u3084\u30e9\u30a4\u30c6\u30a3\u30f3\u30b0\u306e\u8a08\u7b97\u306b\u5fc5\u8981
\n\u6cd5\u7dda\u3092\u9069\u5207\u306b\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u7acb\u4f53\u611f\u3084\u9670\u5f71\u304c\u30ea\u30a2\u30eb\u306b\u306a\u308b<\/p>\n

4-2. \u9802\u70b9\u6cd5\u7dda\u3068\u9762\u6cd5\u7dda<\/h3>\n

\u9762\u6cd5\u7dda\uff1a\u30dd\u30ea\u30b4\u30f3\u9762\u306b\u5782\u76f4\u306a\u65b9\u5411
\n\u9802\u70b9\u6cd5\u7dda\uff1a\u9802\u70b9\u5468\u56f2\u306e\u9762\u3092\u5e73\u5747\u5316\u3057\u3066\u6ed1\u3089\u304b\u306b\u8868\u793a
\n\u30b2\u30fc\u30e0\u3084CG\u3067\u306e\u30ea\u30a2\u30eb\u8868\u73fe\u306b\u306f\u9802\u70b9\u6cd5\u7dda\u304c\u91cd\u8981<\/p>\n

4-3. \u6cd5\u7dda\u30de\u30c3\u30d7\uff08Normal Map\uff09<\/h3>\n

\u30c6\u30af\u30b9\u30c1\u30e3\u3067\u6cd5\u7dda\u30d9\u30af\u30c8\u30eb\u60c5\u5831\u3092\u683c\u7d0d
\n\u51f9\u51f8\u611f\u3092\u30ea\u30a2\u30eb\u306b\u8868\u73fe\u3067\u304d\u308b
\n\u5b9f\u969b\u306e\u5f62\u72b6\u3092\u5909\u3048\u305a\u306b\u5149\u306e\u5f53\u305f\u308a\u65b9\u3092\u5909\u5316\u3055\u305b\u308b\u6280\u8853<\/p>\n

5. \u5de5\u5b66\u30fb\u8a2d\u8a08\u3067\u306e\u6cd5\u7dda\u306e\u5fdc\u7528<\/h2>\n

5-1. CAD\u8a2d\u8a08<\/h3>\n

\u6cd5\u7dda\u30d9\u30af\u30c8\u30eb\u3092\u57fa\u6e96\u306b\u7a74\u3042\u3051\u3084\u5207\u524a\u65b9\u5411\u3092\u6c7a\u5b9a
\n\u66f2\u9762\u306e\u6cd5\u7dda\u3092\u8a08\u7b97\u3057\u3001\u52a0\u5de5\u6a5f\u68b0\u306e\u5de5\u5177\u8ecc\u8de1\u3092\u8a2d\u8a08<\/p>\n

5-2. \u5efa\u7bc9\u30fb\u571f\u6728<\/h3>\n

\u5efa\u7269\u3084\u6a4b\u306e\u9762\u306b\u5782\u76f4\u306a\u8377\u91cd\u3084\u98a8\u5727\u3092\u89e3\u6790
\n\u9762\u6cd5\u7dda\u3092\u57fa\u6e96\u306b\u69cb\u9020\u5b89\u5168\u6027\u3092\u8a55\u4fa1
\n\u5730\u5f62\u89e3\u6790\u3084\u6392\u6c34\u8a08\u7b97\u3067\u3082\u6cd5\u7dda\u306f\u5229\u7528\u3055\u308c\u308b<\/p>\n

5-3. \u30ed\u30dc\u30c6\u30a3\u30af\u30b9\u30fb\u81ea\u52d5\u904b\u8ee2<\/h3>\n

\u30bb\u30f3\u30b5\u30fc\u3084\u30ec\u30fc\u30b6\u30fc\u8a08\u6e2c\u3067\u53d6\u5f97\u3057\u305f\u70b9\u7fa4\u306e\u6cd5\u7dda\u3092\u89e3\u6790
\n\u5730\u5f62\u3084\u7269\u4f53\u306e\u5411\u304d\u3092\u8a8d\u8b58\u3057\u3001\u79fb\u52d5\u3084\u64cd\u4f5c\u306b\u5229\u7528
\n\u30ed\u30dc\u30c3\u30c8\u306e\u628a\u6301\u3084\u63a5\u89e6\u5236\u5fa1\u3067\u3082\u6cd5\u7dda\u306f\u91cd\u8981<\/p>\n

6. \u6cd5\u7dda\u306e\u8a08\u7b97\u65b9\u6cd5<\/h2>\n

6-1. 2D\u66f2\u7dda\u306e\u5834\u5408<\/h3>\n

\u66f2\u7dda y = f(x) \u306b\u5bfe\u3057\u3066
\n\u63a5\u7dda\u306e\u50be\u304d = f'(x)
\n\u6cd5\u7dda\u306e\u50be\u304d = -1 \/ f'(x)
\n\u70b9(x0, y0)\u3067\u6cd5\u7dda\u306e\u65b9\u7a0b\u5f0f\uff1ay - y0 = -1\/f'(x0) * (x - x0)<\/p>\n

6-2. 3D\u66f2\u9762\u306e\u5834\u5408<\/h3>\n

\u66f2\u9762 z = f(x, y) \u306b\u5bfe\u3057\u3066\u6cd5\u7dda\u30d9\u30af\u30c8\u30eb\uff1a(-\u2202f\/\u2202x, -\u2202f\/\u2202y, 1)
\n\u5358\u4f4d\u30d9\u30af\u30c8\u30eb\u5316\u3057\u3066\u65b9\u5411\u3060\u3051\u5229\u7528\u3059\u308b\u3053\u3068\u3082\u591a\u3044<\/p>\n

6-3. \u5916\u7a4d\u306b\u3088\u308b\u6cd5\u7dda<\/h3>\n

\u4e09\u89d2\u5f62\u306e3\u9802\u70b9 A, B, C \u304b\u3089
\nAB = B - A, AC = C - A
\n\u6cd5\u7dda\u30d9\u30af\u30c8\u30eb = AB \u00d7 AC\uff08\u5916\u7a4d\uff09
\n\u9762\u6cd5\u7dda\u30843D\u30e2\u30c7\u30eb\u306e\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u306b\u5fdc\u7528<\/p>\n

7. \u307e\u3068\u3081\uff1a\u6cd5\u7dda\u306e\u91cd\u8981\u6027\u3068\u5fdc\u7528<\/h2>\n

\u6cd5\u7dda\u306f\u3001\u9762\u3084\u66f2\u7dda\u306b\u5782\u76f4\u306a\u7dda\u3084\u30d9\u30af\u30c8\u30eb\u3068\u3057\u3066\u3001\u6570\u5b66\u30fb\u7269\u7406\u30fb\u5de5\u5b66\u30fb3D\u30b0\u30e9\u30d5\u30a3\u30c3\u30af\u30b9\u306a\u3069\u5e45\u5e83\u3044\u5206\u91ce\u3067\u91cd\u8981\u306a\u5f79\u5272\u3092\u6301\u3064\u6982\u5ff5\u3067\u3059\u3002
\n\u6570\u5b66\u3067\u306f\u63a5\u7dda\u3084\u66f2\u9762\u306e\u89e3\u6790\u306b\u4e0d\u53ef\u6b20
\n\u7269\u7406\u3067\u306f\u529b\u5b66\u30fb\u53cd\u5c04\u30fb\u6d41\u4f53\u89e3\u6790\u3067\u57fa\u6e96\u7dda\u3068\u306a\u308b
\nCG\u3067\u306f\u5149\u306e\u5f53\u305f\u308a\u65b9\u3084\u9670\u5f71\u30013D\u8868\u73fe\u306b\u5fc5\u9808
\n\u5de5\u5b66\u3084\u8a2d\u8a08\u3067\u306f\u8377\u91cd\u89e3\u6790\u3001\u52a0\u5de5\u65b9\u5411\u3001\u30ed\u30dc\u30c6\u30a3\u30af\u30b9\u306b\u5fdc\u7528
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