{"id":500,"date":"2026-10-21T00:30:24","date_gmt":"2026-10-20T16:30:24","guid":{"rendered":"http:\/\/chenglixue.top\/?p=500"},"modified":"2026-10-21T00:30:44","modified_gmt":"2026-10-20T16:30:44","slug":"500","status":"publish","type":"post","link":"http:\/\/chenglixue.top\/?p=500","title":{"rendered":"\u81ea\u52a8\u66dd\u5149\u2014\u2014\u57fa\u7840\u7bc7"},"content":{"rendered":"<h1><strong>\u81ea\u52a8\u66dd\u5149\u662f\u4ec0\u4e48\uff1f<\/strong><\/h1>\n<p>\u573a\u666f\u91cc\u6709\u7684\u5730\u65b9\u5f88\u4eae\uff0c\u6709\u7684\u5730\u65b9\u5f88\u6697<\/p>\n<p>\u663e\u793a\u5668\u80fd\u663e\u793a\u7684\u4eae\u5ea6\u8303\u56f4\u5f88\u6709\u9650<\/p>\n<p><strong>\u81ea\u52a8\u66dd\u5149<\/strong>\u5c31\u662f\uff1a\u6bcf\u5e27\u770b\u770b\u753b\u9762\u6574\u4f53\u6709\u591a\u4eae\uff0c\u7b97\u51fa\u4e00\u4e2a\u300c\u66dd\u5149\u500d\u6570\u300d\uff0c\u628a\u6574\u5f20\u56fe\u7edf\u4e00\u8c03\u4eae\u6216\u8c03\u6697\uff0c\u8ba9\u753b\u9762\u770b\u8d77\u6765\u8212\u670d\u2014\u2014\u7c7b\u4f3c\u4eba\u773c\u4ece\u6697\u5904\u8d70\u5230\u4eae\u5904\u4f1a\u772f\u773c\u3001\u4ece\u4eae\u5904\u8fdb\u6697\u5904\u4f1a\u6162\u6162\u770b\u6e05<\/p>\n<p>\u6e38\u620f\u91cc\u4e5f\u53eb\u00a0<strong>Eye Adaptation\uff08\u773c\u775b\u9002\u5e94\uff09<\/strong><\/p>\n<h1><strong>\u4e3a\u4ec0\u4e48\u9700\u8981\uff1f<\/strong><\/h1>\n<p>\u573a\u666f\u4eae\u5ea6\u4f1a\u53d8\uff08\u8fdb\u51fa\u5ba4\u5185\u3001\u663c\u591c\u3001\u52a8\u6001\u5173\u5361\uff09\u3002\u81ea\u52a8\u66dd\u5149\u8981\u6a21\u62df\u773c\u775b\u5bf9\u5149\u7ebf\u53d8\u5316\u7684\u53cd\u5e94\uff0c\u5e76\u9009\u51fa\u300c\u5408\u9002\u300d\u7684\u66dd\u5149\u3002\u96be\u70b9\u5728\u4e8e\uff1a\u4ec0\u4e48\u53eb\u5408\u9002\u2014\u2014\u6309\u592a\u9633\u3001\u6309\u9634\u5f71\uff0c\u8fd8\u662f\u6298\u4e2d\uff1f\u753b\u9762\u8be5\u6b63\u5e38\u3001\u6b20\u66dd\u8fd8\u662f\u8fc7\u66dd\uff1f\u8fd9\u6ca1\u6709\u552f\u4e00\u7b54\u6848\uff0c\u6240\u4ee5\u6709\u4eba\u5e72\u8106\u624b\u52a8\u5b9a\u66dd\u5149<\/p>\n<p><a class=\"wp-editor-md-post-content-link\" href=\"http:\/\/chenglixue.top\/wp-content\/uploads\/2026\/10\/wp_editor_md_4ee5b30d9f66eb8e3c0ae3664f712f59.jpg\" alt=\"\u81ea\u52a8\u66dd\u5149\u2014\u2014\u57fa\u7840\u7bc7\" title=\"\u81ea\u52a8\u66dd\u5149\u2014\u2014\u57fa\u7840\u7bc7\"><img decoding=\"async\"   class=\"lazyload\" data-src=\"http:\/\/chenglixue.top\/wp-content\/uploads\/2026\/10\/wp_editor_md_4ee5b30d9f66eb8e3c0ae3664f712f59.jpg\" src=\"https:\/\/cdn.jsdelivr.net\/gh\/moezx\/cdn@3.0.2\/img\/svg\/loader\/trans.ajax-spinner-preloader.svg\" onerror=\"imgError(this)\"  alt=\"\" \/><\/a><\/p >\n<noscript><img decoding=\"async\" src=\"http:\/\/chenglixue.top\/wp-content\/uploads\/2026\/10\/wp_editor_md_4ee5b30d9f66eb8e3c0ae3664f712f59.jpg\" alt=\"\" \/><\/a><\/p><\/noscript>\n<h1>\u5982\u4f55\u5b9e\u73b0?<\/h1>\n<h2>\u6838\u5fc3\u7b97\u6cd5<\/h2>\n<p>\u81ea\u52a8\u66dd\u5149\u76ee\u524d\u5206\u4e3a\u4e24\u79cd\u505a\u6cd5\uff0c\u4f46\u6838\u5fc3\u7b97\u6cd5\u90fd\u662f\u4e00\u6837\u7684\uff0c\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li>\u91cf\uff1a<strong>\u8fd9\u4e00\u5e27\u6709\u591a\u4eae<\/strong>\n<ul>\n<li>\u6bcf\u4e2apixel\u8ba1\u7b97luminance<\/li>\n<li>\u8ba1\u7b97\u6240\u6709luminance\u7684\u5e73\u5747\u503c\uff0c\u5f97\u5230\u4e00\u4e2a\u5e73\u5747\u4eae\u5ea6 <strong>L_avg<\/strong><\/li>\n<\/ul>\n<\/li>\n<li>\u6bd4\uff1a<strong>\u79bb\u201c\u8be5\u6709\u591a\u4eae\u201d\u5dee\u51e0\u6863<\/strong>\n<ul>\n<li>\u6444\u5f71\u91cc\u628a 18% \u7070\uff080.18\uff09\u5f53\u6210\u6b63\u786e\u66dd\u5149\u7684\u4e2d\u7070\uff0c\u9700\u8981\u8ba1\u7b97\u4e00\u4e2a\u7cfb\u6570<strong>ExposureScale<\/strong>\uff0c\u4f7f\u5f97<span class=\"katex math inline\">ExposureScale * L_{avg} = 0.18<\/span><\/li>\n<li>\u4eba\u773c\/\u76f8\u673a\u7528 \u6863\uff08EV\uff09 \u60f3\u8fd9\u4ef6\u4e8b\uff0c\u4e00\u6863\u5c31\u662f\u4e58\/\u9664 2\uff1a<span class=\"katex math inline\">EV = log\u2082(L_{avg})<\/span><\/li>\n<\/ul>\n<\/li>\n<li>\u8c03\uff1a<strong>\u7ed9\u7f8e\u672f\u989d\u5916\u53c2\u6570<\/strong>\n<ul>\n<li>\u5939\u7d27\uff08Min \/ Max\uff09\uff1a\u5e73\u5747\u4eae\u5ea6\u53ea\u5141\u8bb8\u843d\u5728\u4e00\u4e2a\u8303\u56f4\u5185<\/li>\n<li>\u66dd\u5149\u8865\u507f EV\uff08Exposure Compensation\uff09\uff1a\u7f8e\u672f\u624b\u52a8\u8c03\u8282\u4eae\u5ea6\u6863\u4f4d<\/li>\n<\/ul>\n<\/li>\n<li>\u7528\uff1a\u6bcf\u4e2a\u50cf\u7d20\u989c\u8272\u4e58\u4e0a<strong>ExposureScale<\/strong><\/li>\n<\/ul>\n<p>\u65b0\u6d3e\u548c\u8001\u724c\u505a\u6cd5\u53ea\u5728\u201d<strong>\u91cf<\/strong>\u201d\u4e0a\u4e0d\u540c<\/p>\n<h2><strong>\u8001\u6d3e\u505a\u6cd5<\/strong><\/h2>\n<p>\u5728\u201d<strong>\u91cf<\/strong>\u201d\u4e0a\uff0c\u8001\u6d3e\u505a\u6cd5\u5c06\u6240\u6709luminance\u90fd\u7eb3\u5165\u8003\u8651\uff0c\u901a\u8fc7\u4e0d\u65ad\u964d\u91c7\u6837\uff0c\u6700\u7ec8\u964d\u91c7\u6837\u4e00\u4e2a\u6570\uff0c\u8fd9\u4e2a\u6570\u5373\u4e3a<strong>ExposureScale<\/strong><\/p>\n<h2>\u65b0\u5f0f\u505a\u6cd5<\/h2>\n<p>\u5728\u201d<strong>\u91cf<\/strong>\u201d\u4e0a\uff0c\u65b0\u5f0f\u505a\u6cd5\u4e5f\u5c06\u6240\u6709luminance\u90fd\u7eb3\u5165\u8003\u8651\uff0c\u4f46\u8fd9\u4e9bluminance\u4f1a\u653e\u5165\u76f4\u65b9\u56fe\u6309\u6321\u4f4d\u5212\u5206\uff0c\u6321\u4f4d\u5916\u7684(\u6781\u4eae\u3001\u6781\u6697)\u6392\u9664\uff0c\u5269\u4e0b\u7684\u52a0\u6743\u5e73\u5747\uff0c\u5f97\u5230<strong>ExposureScale<\/strong><\/p>\n<ul>\n<li><strong>\u4e2d\u5fc3\u52a0\u6743<\/strong>\n<p>\u753b\u9762\u4e2d\u5fc3\u66f4\u91cd\u8981\uff0c\u53ef\u53ea\u6d4b\u4e2d\u5fc3\u5706\uff0c\u6216\u7ed9\u4e2d\u5fc3\u50cf\u7d20\u66f4\u5927\u6743\u91cd<\/p>\n<\/li>\n<li>\n<p><strong>\u76f4\u65b9\u56fe<\/strong><\/p>\n<p>\u5c0f\u5757\u6781\u4eae\/\u6781\u6697\u4f1a\u62d6\u57ae\u7b80\u5355\u5e73\u5747\uff1b\u76f4\u65b9\u56fe\u53ef\u8fd1\u4f3c\u6309\u300c\u4e3b\u5bfc\u4eae\u5ea6\u300d\u6216\u4e2d\u4f4d\u6570\u6765\u9002\u5e94\u300264 \u4e2a log2 \u6863\u53ef\u76d6\u7ea6 16 EV\uff0c128 \u6863\u53ef\u76d6\u73b0\u5b9e\u51e0\u4e4e\u5168\u90e8\u66dd\u5149\u8303\u56f4\u3002\u5efa\u5b8c\u540e\u53ef\u4e22\u6389\u5927\u91cf\u6700\u6697\u50cf\u7d20\uff08\u7ea6 50%\u201380%\uff09\u548c\u5c11\u91cf\u6700\u4eae\u50cf\u7d20\uff08\u7ea6 2%\u201320%\uff09\uff0c\u7528\u4e2d\u95f4\u90e8\u5206\u6c42\u5e73\u5747\uff0c\u66dd\u5149\u66f4\u7a33<\/p>\n<\/li>\n<li>\n<p><strong>\u6ed1\u52a8\u76f4\u65b9\u56fe \/ \u9884\u66dd\u5149<\/strong><\/p>\n<p>\u7528\u4e0a\u4e00\u5e27\u66dd\u5149\u5148\u4e58\u56de HDR \u7f13\u51b2\uff0c\u65b9\u4fbf\u7528 R11G11B10 \u7b49\u683c\u5f0f\u5b58 HDR \u800c\u4e0d\u4e22\u7cbe\u5ea6\uff08Valve \u4e5f\u505a\u8fc7\u7c7b\u4f3c\u9884\u66dd\u5149\uff09<\/p>\n<\/li>\n<li>\n<p><strong>\u66dd\u5149\u8865\u507f\u66f2\u7ebf<\/strong><\/p>\n<p>\u7eaf\u81ea\u52a8\u4f1a\u628a\u6697\u5ba4\u548c\u5f00\u7a97\u540e\u7684\u4eae\u5ba4\u90fd\u62c9\u6210\u5dee\u4e0d\u591a\u4eae\uff0c\u4f46\u6211\u4eec\u66f4\u5e0c\u671b\uff1a\u6697\u73af\u5883\u6700\u7ec8\u753b\u9762\u504f\u6697\uff0c\u4eae\u73af\u5883\u504f\u4eae<\/p>\n<p>\u56e0\u6b64 Krawczyk \u62df\u5408\u8fc7 key \u968f\u4eae\u5ea6\u53d8\u5316\u7684\u66f2\u7ebf\uff1b\u6e38\u620f\u91cc\u53ef\u4ee5\u81ea\u5df1\u5b9a\u51fd\u6570\uff0c\u6216\u8ba9\u7f8e\u672f\u8c03 1D \u67e5\u627e\u8868<\/p>\n<\/li>\n<li>\n<p><strong>\u6309\u7167\u5ea6\u9002\u5e94\uff0c\u800c\u4e0d\u662f\u6309\u6700\u7ec8\u50cf\u7d20\u4eae\u5ea6<\/strong><\/p>\n<p>\u53ea\u770b\u6700\u7ec8\u4eae\u5ea6\u65f6\uff0c\u767d\u5899\u548c\u9ed1\u5899\u7ecf\u66dd\u5149\u540e\u53ef\u80fd\u770b\u8d77\u6765\u5dee\u4e0d\u591a\u3002Hoffmann \u5efa\u8bae\u6309\u300c\u7167\u5230\u8868\u9762\u7684\u5149\u300d\uff08illuminance\uff09\u9002\u5e94\uff0c\u6750\u8d28\u53cd\u5c04\u7387\u5c31\u4e0d\u63ba\u548c\u8fdb\u6765\uff1b\u955c\u9762\u4e5f\u80fd\u5c11\u5e72\u6270\u3002\u5929\u7a7a\u76d2\u600e\u4e48\u8fdb\u6d4b\u5149\u8981\u5355\u72ec\u5b9a\uff0c\u5e76\u5e38\u7ed9\u5929\u7a7a\u624b\u5de5\u66dd\u5149\u8865\u507f<\/p>\n<\/li>\n<\/ul>\n<h2>\u81ea\u52a8\u66dd\u5149\u7ba1\u7ebf<\/h2>\n<p>\u8bb0\u4f4f\uff0c\u9700\u8981\u5728Tonemap\u524d\uff0c\u8fdb\u884c\u81ea\u52a8\u66dd\u5149<\/p>\n<p><a class=\"wp-editor-md-post-content-link\" href=\"http:\/\/chenglixue.top\/wp-content\/uploads\/2026\/10\/wp_editor_md_d5229f31d1a4cd1947c0c59517f38263.jpg\" alt=\"\u81ea\u52a8\u66dd\u5149\u2014\u2014\u57fa\u7840\u7bc7\" title=\"\u81ea\u52a8\u66dd\u5149\u2014\u2014\u57fa\u7840\u7bc7\"><img decoding=\"async\"   class=\"lazyload\" data-src=\"http:\/\/chenglixue.top\/wp-content\/uploads\/2026\/10\/wp_editor_md_d5229f31d1a4cd1947c0c59517f38263.jpg\" src=\"https:\/\/cdn.jsdelivr.net\/gh\/moezx\/cdn@3.0.2\/img\/svg\/loader\/trans.ajax-spinner-preloader.svg\" onerror=\"imgError(this)\"  alt=\"\" \/><\/a><\/p >\n<noscript><img decoding=\"async\" src=\"http:\/\/chenglixue.top\/wp-content\/uploads\/2026\/10\/wp_editor_md_d5229f31d1a4cd1947c0c59517f38263.jpg\" alt=\"\" \/><\/a><\/p><\/noscript>\n<h1>\u9884\u66dd\u5149<\/h1>\n<ul>\n<li>\u4ec0\u4e48\u662f\u9884\u66dd\u5149\n<p>\u5728\u540e\u5904\u7406\u524d\uff0c\u8ba1\u7b97Scene Color\u5149\u7167\u65f6\uff0c\u4e58\u4e0a\u9884\u66dd\u5149\u7f29\u653e\u7cfb\u6570<\/p>\n<\/li>\n<li>\n<p>\u4e3a\u4ec0\u4e48\u9700\u8981\u9884\u66dd\u5149<\/p>\n<p>Scene Color RT\u683c\u5f0f\u4e00\u822c\u4e3a<strong>R16G16B16A16_FLOAT<\/strong>\uff0c\u8fd9\u6837\u7684\u7cbe\u5ea6\u770b\u4f3c\u8f83\u9ad8\uff0c\u4f46\u5bf9\u4e8e\u81ea\u52a8\u66dd\u5149\u6765\u8bf4\u662f\u6709\u4e0d\u8db3\u7684\uff0c\u56e0\u4e3aR16G16B16A16_FLOAT\u7684\u7cbe\u5ea6<strong>\u53ea\u652f\u63013-4\u4f4d\u6709\u6548\u6570\u5b57<\/strong><\/p>\n<ul>\n<li>R16G16B16A16_FLOAT\u5982\u4f55\u8868\u793a\u6570\u5b57\uff1f\n<p>\u518d\u7ee7\u7eed\u4e0b\u53bb\u4e4b\u524d\uff0c\u5148\u770b\u770b\u534a\u7cbe\u5ea6\u662f\u5982\u4f55\u8868\u793a\u6570\u5b57\u7684<\/p>\n<ul>\n<li>R16G16B16A16_FLOAT\u4f7f\u7528<strong>\u00b1 1.xxxx<\/strong>xxxxxx \u00d7 2^\u6863\u6765\u8868\u793a\uff08\u6ce8\u610f\uff0c<strong>\u5c0f\u6570\u70b9\u540e\u7684\u662f\u4e8c\u8fdb\u5236<\/strong>\uff09\uff0c\u5176\u4e2d\u5c0f\u6570\u70b9\u540e\u6709\u5341\u4f4d\uff0c\u8fd9\u610f\u5473\u7740<strong>\u6bcf\u4e00\u6863\u5c0f\u6570\u70b9\u7684\u7cbe\u5ea6\u662f1024<\/strong>\n<p>\u6765\u770b\u4e00\u4e2a\u4f8b\u5b50\u5c31\u77e5\u9053\u4e86\uff0c4096\u8868\u793a\u4e3a1 x 2^12<\/p>\n<p>\u4e0b\u4e00\u6863\u662f1x2^13 = 8192\uff0c\u57284096-8192\u95f4\uff0c\u67094096\u4e2a\u6570\uff0c\u4f46\u5c0f\u6570\u70b9\u540e\u7684\u7cbe\u5ea6\u662f1024\uff0c\u8fd9\u610f\u5473\u7740\uff0c\u8fd9\u79cd\u60c5\u51b5\u4e0b\u6bcf\u56db\u4e2a\u6570\uff0c\u7531\u5c0f\u6570\u70b9\u540e\u4e00\u4f4d\u8868\u793a<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>\u82e5\u662f\u5904\u4e8e\u5f88\u6697\u7684\u5ba4\u5185\uff0c\u8ba1\u7b97\u5f97\u5230\u7684\u66dd\u5149\u7cfb\u6570\u5f88\u4f4e\uff0c\u6bd4\u59820.00005\uff0c\u8fd9\u79cd\u60c5\u51b5\u4e0b\u5f97\u5230\u7684\u503c\u4e3a0\uff0c\u90a3\u4e48\u5c31\u662f<strong>\u5168\u9ed1\uff0c\u9634\u5f71\u5c42\u6b21\u5c06\u6d88\u5931<\/strong>\uff1b\u82e5\u5904\u4e8e\u5f88\u4eae\u7684\u5ba4\u5916\uff0c\u8ba1\u7b97\u5f97\u5230\u7684\u66dd\u5149\u7cfb\u6570\u5f88\u9ad8\uff0c\u6bd4\u59828000\uff0c\u90a3\u4e48\u5c42\u6b21\u8fc7\u6e21\u4f1a\u975e\u5e38\u5dee\uff0c\u56e0\u4e3a8000\u6321\u4f4d\u4e0b\uff0c\u6bcf\u56db\u4e2a\u6570\uff0c\u7531\u5c0f\u6570\u70b9\u540e\u4e00\u4f4d\u8868\u793a<\/p>\n<\/li>\n<li>\n<p>\u5982\u4f55\u5b9e\u73b0\u9884\u66dd\u5149<\/p>\n<p>\u6838\u5fc3\u95ee\u9898\uff1a\u5982\u4f55\u8ba1\u7b97\u9884\u66dd\u5149\uff1f<\/p>\n<p>\u6bcf\u6b21\u8ba1\u7b97\u5b8c\u66dd\u5149\u7cfb\u6570\u65f6\uff0c\u8bb0\u5f55\u8fd9\u4e00\u7cfb\u6570\u4f5c\u4e3a\u9884\u66dd\u5149\u7cfb\u6570\uff0c\u4f20\u56deCPU\uff0c\u4e0b\u6b21\u8ba1\u7b97Scene Color Lighting\u65f6\uff0c\u4f7f\u7528\u8be5\u9884\u66dd\u5149\u7cfb\u6570<\/p>\n<p>\u82e5\u662f\u7b2c\u4e00\u6b21\u8ba1\u7b97Scene Color Lighting\uff0c\u9884\u66dd\u5149\u7cfb\u6570\u8bbe\u4e3a1<\/p>\n<p>\u9700\u8981\u6ce8\u610f\uff0c\u56e0\u4e3a\u5e94\u7528\u4e86\u9884\u66dd\u5149\u7cfb\u6570\uff0c\u6240\u4ee5\u9700\u8981\u5728\u8ba1\u7b97\u66dd\u5149\u7cfb\u6570\u91cc\uff0c\u8ba1\u7b97\u4eae\u5ea6\u65f6\uff0c\u4e58\u4e0aone over 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Exposure<\/strong><\/p>\n<p><strong>Adaptive Exposure from Luminance Histograms<\/strong><\/p>\n<p><strong>Automatic Exposure Using a Luminance Histogram<\/strong><\/p>\n<p><strong>\u81ea\u52a8\u66dd\u5149<\/strong><\/p>\n<p><strong>Epic Games\u5982\u4f55\u57284.25\u7248\u4e2d\u5904\u7406\u81ea\u52a8\u66dd\u5149<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u81ea\u52a8\u66dd\u5149\u662f\u4ec0\u4e48\uff1f \u573a\u666f\u91cc\u6709\u7684\u5730\u65b9\u5f88\u4eae\uff0c\u6709\u7684\u5730\u65b9\u5f88\u6697 \u663e\u793a\u5668\u80fd\u663e\u793a\u7684\u4eae\u5ea6\u8303\u56f4\u5f88\u6709\u9650 \u81ea\u52a8\u66dd\u5149\u5c31\u662f\uff1a\u6bcf\u5e27\u770b\u770b\u753b\u9762\u6574\u4f53\u6709\u591a\u4eae\uff0c\u7b97\u51fa\u4e00\u4e2a\u300c 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