{"id":539,"date":"2025-12-12T16:14:46","date_gmt":"2025-12-12T08:14:46","guid":{"rendered":"http:\/\/8.154.33.202\/?p=539"},"modified":"2025-12-12T16:14:46","modified_gmt":"2025-12-12T08:14:46","slug":"pytorch3d%e7%9a%84%e5%8f%af%e5%be%ae%e5%88%86%e6%b8%b2%e6%9f%93","status":"publish","type":"post","link":"http:\/\/8.154.33.202\/?p=539","title":{"rendered":"pytorch3D\u7684\u53ef\u5fae\u5206\u6e32\u67d3"},"content":{"rendered":"\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p><strong>\u4f20\u7edfmesh\u6e32\u67d3\u8fc7\u7a0b\u7684\u4e0d\u53ef\u5fae\u5206\u6027<\/strong><\/p>\n<\/div><\/div>\n\n\n\n<p>\u4f20\u7edf\u7684mesh\u6e32\u67d3\u7b97\u6cd5\uff0c\u8ba1\u7b97\u67d0\u4e2a\u50cf\u7d20\u503c\uff0c\u662f\u6839\u636e\u901a\u8fc7\u50cf\u7d20\u7684\u5149\u7ebf\u4e0emesh\u6a21\u578b\u76f8\u4ea4\u7684face\u786e\u5b9a\u7684\u3002\u800c\u8fd9\u4e2a\u8fc7\u7a0b\u662f\u79bb\u6563\u7684\u8fc7\u7a0b\uff0c\u5982\u4e0b\u56fe\u6240\u793a\u3002\u5728z\u65b9\u5411\uff0cface\u6cbf\u7740z\u65b9\u5411\u7684\u79fb\u52a8\u4f1a\u9020\u6210\u50cf\u7d20\u503c\u8df3\u53d8\uff1b\u5728xy\u65b9\u5411\uff0cface\u6cbf\u7740xy\u65b9\u5411\u79fb\u52a8\u4e5f\u4f1a\u9020\u6210\u50cf\u7d20\u503c\u8df3\u53d8\u3002\u56e0\u6b64\u50cf\u7d20\u503c\u4e0eface\u7684\u7a7a\u95f4\u4f4d\u7f6e\u4e4b\u95f4\u7684\u51fd\u6570\u662f\u4e00\u4e2a\u4e0d\u53ef\u5fae\u7684\u51fd\u6570\uff0c\u4e5f\u5c31\u65e0\u6cd5\u901a\u8fc7\u50cf\u7d20\u503c\u7684\u5dee\u5f02\u6765\u53cd\u5411\u4f20\u64ad\u66f4\u65b0face\u7684\u7a7a\u95f4\u4f4d\u7f6e\u3002pytorch3d\u91c7\u7528\u4e86\u4e00\u79cd\u53ef\u5fae\u5206\u6e32\u67d3\u7684\u65b9\u5f0f\uff0c\u5b9e\u73b0\u4e86\u50cf\u7d20\u503c\u548cface\u4e4b\u95f4\u7684\u53ef\u5fae\u5206\u7684\u51fd\u6570\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"850\" height=\"583\" src=\"http:\/\/8.154.33.202\/wp-content\/uploads\/2025\/12\/image.png\" alt=\"\" class=\"wp-image-540\" srcset=\"http:\/\/8.154.33.202\/wp-content\/uploads\/2025\/12\/image.png 850w, http:\/\/8.154.33.202\/wp-content\/uploads\/2025\/12\/image-300x206.png 300w, http:\/\/8.154.33.202\/wp-content\/uploads\/2025\/12\/image-768x527.png 768w\" sizes=\"(max-width: 767px) 89vw, (max-width: 1000px) 54vw, (max-width: 1071px) 543px, 580px\" \/><\/figure>\n\n\n\n<p><strong>pytorch3d Renderer<\/strong><\/p>\n\n\n\n<p><a href=\"https:\/\/arxiv.org\/pdf\/2007.08501\" target=\"_blank\" rel=\"noreferrer noopener\">pytorch3d<\/a>\u5b9e\u73b0\u4e86\u5bf9\u4e8emesh\u53ef\u5fae\u5206\u7684\u6e32\u67d3\u8fc7\u7a0b\uff1apytorch3d\u4e2d\u7684\u6e32\u67d3\u5668Renderer\u5305\u542b\u4e24\u4e2a\u4e3b\u8981\u7684\u90e8\u5206\uff0crasterizer\u548cshader\u3002rasterizer\u8d1f\u8d23\u5c06mesh\u6a21\u578b\u8fdb\u884c\u5149\u6805\u5316\uff0c\u4f5c\u7528\u662f\u5c06mesh\u7684face\u5bf9\u5e94\u52302d\u56fe\u50cf\u50cf\u7d20\uff1bshader\u8d1f\u8d23\u5bf9\u50cf\u7d20\u8fdb\u884c\u7740\u8272\u3002pytorch3d\u7684\u53ef\u5fae\u5206\u6e32\u67d3\u4e3b\u8981\u53c2\u7167\u8bba\u6587\u300a<a href=\"https:\/\/arxiv.org\/abs\/1901.05567\" target=\"_blank\" rel=\"noreferrer noopener\">Soft Rasterizer: Differentiable Rendering for Unsupervised Single-View Mesh Reconstruction<\/a>\u300b\uff0c\u5e76\u8fdb\u884c\u4e86\u6539\u52a8\u4ee5\u63d0\u5347\u8ba1\u7b97\u6548\u7387\u3002<\/p>\n\n\n\n<p><strong>Soft Rasterizer<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"444\" height=\"316\" src=\"http:\/\/8.154.33.202\/wp-content\/uploads\/2025\/12\/image-1.png\" alt=\"\" class=\"wp-image-541\" srcset=\"http:\/\/8.154.33.202\/wp-content\/uploads\/2025\/12\/image-1.png 444w, http:\/\/8.154.33.202\/wp-content\/uploads\/2025\/12\/image-1-300x214.png 300w\" sizes=\"(max-width: 444px) 100vw, 444px\" \/><\/figure>\n\n\n\n<p>\u4f20\u7edf\u7684rasterizer\u5c06mesh\u6a21\u578b\u6620\u5c04\u52302d\u56fe\u50cf\u50cf\u7d20\uff0c\u662f\u4e00\u4e2a\u79bb\u6563\u7684\u8fc7\u7a0b\u3002\u7531\u901a\u8fc7\u50cf\u7d20\u7684\u5149\u7ebf\u4e0emesh\u6a21\u578b\u76f8\u4ea4\u7684face\u786e\u5b9a\u3002soft rasterizer\u7684\u5047\u8bbe\u662f\uff0c\u5bf9\u4e00\u4e2a\u50cf\u7d20\u6765\u8bf4\uff0c\u6bcf\u4e2aface\u5bf9\u8be5\u50cf\u7d20\u90fd\u6709\u67d0\u79cd\u7a0b\u5ea6\u5f71\u54cd\uff0c\u5c06\u6240\u6709face\u5bf9\u8be5\u50cf\u7d20\u7684\u5f71\u54cd\u8fdb\u884c\u4e00\u79cd\u7efc\u5408\uff0c\u5c31\u786e\u5b9a\u4e86\u8be5\u50cf\u7d20\u6700\u7ec8\u7684\u7ed3\u679c\u3002<\/p>\n\n\n\n<p><strong>\u8ba1\u7b97face\u5bf9\u50cf\u7d20\u7684\u5f71\u54cd\u7a0b\u5ea6<\/strong><\/p>\n\n\n\n<p>\u5bf9\u4e8e\u7b2ci\u4e2a\u50cf\u7d20\uff0c\u7b2cj\u4e2aface\u5bf9\u5176\u7684\u5f71\u54cd\u7a0b\u5ea6D\u5b9a\u4e49\u4e3a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"229\" height=\"44\" src=\"http:\/\/8.154.33.202\/wp-content\/uploads\/2025\/12\/image-2.png\" alt=\"\" class=\"wp-image-542\"\/><\/figure>\n\n\n\n<p>\u5176\u4e2d\uff0cd(i, j)\u4e3a\u50cf\u7d20i\u5230face j\u7684\u8fb9\u7f18\u7684\u6700\u5c0f\u8ddd\u79bb\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"144\" height=\"137\" src=\"http:\/\/8.154.33.202\/wp-content\/uploads\/2025\/12\/image-3.png\" alt=\"\" class=\"wp-image-543\"\/><\/figure>\n\n\n\n<p>\u03b4\u4e3a\u7b26\u53f7\u7cfb\u6570\uff0c\u8868\u793a\u50cf\u7d20\u5728face\u5185\u90e8\u8fd8\u662f\u5916\u90e8<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"120\" height=\"36\" src=\"http:\/\/8.154.33.202\/wp-content\/uploads\/2025\/12\/image-4.png\" alt=\"\" class=\"wp-image-544\"\/><\/figure>\n\n\n\n<p>\u03c3\u4e3a\u8d85\u53c2\u6570\uff0c\u63a7\u5236\u8ddd\u79bb\u5bf9\u4e8eD\u7684\u5f71\u54cd\u5927\u5c0f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"120\" height=\"76\" src=\"http:\/\/8.154.33.202\/wp-content\/uploads\/2025\/12\/image-5.png\" alt=\"\" class=\"wp-image-545\"\/><\/figure>\n\n\n\n<p>sigmoid\u51fd\u6570\u5c06\u8fd9\u4e2a\u503c\u9650\u5236\u52300-1\u4e4b\u95f4\uff0c\u5e76\u4e14\u50cf\u7d20\u5728face\u5185\u90e8\u65f6\uff0cD\u5927\u4e8e0.5\uff0c\u5728face\u5916\u90e8\u65f6\u5c0f\u4e8e0.5\u3002\u200b<\/p>\n\n\n\n<p>\u4ece\u8fd9\u4e2a\u5b9a\u4e49\u6765\u770b\uff0cD\u5173\u4e8eface\u7684\u4f4d\u7f6e\u662f\u53ef\u5fae\u7684\u3002<\/p>\n\n\n\n<p><strong>\u805a\u5408\u51fd\u6570<\/strong><\/p>\n\n\n\n<p>Soft rasterizer\u8bba\u6587\u662f\u8981\u8ba1\u7b97mesh\u7684silhouette\uff0c\u76f8\u5f53\u4e8e\u5728\u56fe\u50cf\u5e73\u9762\u7684\u5f71\u5b50\u6216\u8005mask\u3002\u200b<\/p>\n\n\n\n<p>\u5bf9\u4e8e\u7b2ci\u4e2a\u50cf\u7d20\uff0c\u5c06\u6240\u6709face\u5bf9\u5b83\u7684\u5f71\u54cd\u7528\u4e00\u79cd\u65b9\u5f0f\u805a\u5408\uff0c\u4f5c\u4e3a\u8be5\u50cf\u7d20\u6700\u7ec8\u7684\u7ed3\u679c\u3002soft rasterizer\u5b9a\u4e49\u7684\u805a\u5408\u51fd\u6570\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"120\" height=\"30\" src=\"http:\/\/8.154.33.202\/wp-content\/uploads\/2025\/12\/image-6.png\" alt=\"\" class=\"wp-image-546\"\/><\/figure>\n\n\n\n<p>\u5176\u4e2d\uff0cj\u8868\u793a\u7b2cj\u4e2aface\uff0cN\u4e3aface\u7684\u603b\u6570\u3002\u8fd9\u4e2a\u5b9a\u4e49\uff0c\u4f7f\u5f97\u53ea\u8981\u67091\u4e2aface\u5bf9\u8be5\u50cf\u7d20\u7684\u5f71\u54cd\u662f1\uff0c\u90a3\u8be5\u50cf\u7d20\u6700\u7ec8\u7684\u7ed3\u679c\u5c31\u662f1\u3002\u5f53\u6240\u6709\u7684face\u5bf9\u8be5\u50cf\u7d20\u7684\u5f71\u54cd\u90fd\u662f0\u65f6\uff0c\u8be5\u50cf\u7d20\u7684\u7ed3\u679c\u624d\u4e3a0\u3002\u200b<\/p>\n\n\n\n<p>\u8fd9\u4e2a\u805a\u5408\u51fd\u6570\u4e5f\u662f\u4e00\u4e2a\u53ef\u5fae\u7684\u51fd\u6570\u3002\u56e0\u6b64\uff0c\u6700\u7ec8\u50cf\u7d20\u7684\u7ed3\u679c\u5173\u4e8eface\u7684\u4f4d\u7f6e\u662f\u4e00\u4e2a\u53ef\u5fae\u7684\u51fd\u6570\u3002<\/p>\n\n\n\n<p><strong>pytorch3d\u7684\u6539\u52a8<\/strong><\/p>\n\n\n\n<p>pytorch3d\u5bf9\u4e0a\u9762\u7684\u8fc7\u7a0b\u8fdb\u884c\u4e86\u4e00\u4e9b\u4fee\u6539\uff0c\u4ee5\u7b26\u5408\u8ba1\u7b97\u6548\u7387\u548c\u6a21\u5757\u5316\u7684\u8981\u6c42\u3002<\/p>\n\n\n\n<p><strong>pytorch3d\u4e2d\u7684rasterizer<\/strong><\/p>\n\n\n\n<p>\u9996\u5148\uff0csoft rasterizer\u4e2d\uff0c\u4e00\u4e2a\u50cf\u7d20\u7684\u7ed3\u679c\u662f\u7531\u6240\u6709\u7684face\u6765\u8ba1\u7b97\u786e\u5b9a\u7684\uff0c\u800c\u8fd9\u5b58\u5728\u5f88\u5927\u7684\u8ba1\u7b97\u6d6a\u8d39\uff0c\u56e0\u4e3a\u5927\u591a\u6570face\u548c\u8be5\u50cf\u7d20\u662f\u76f8\u9694\u5f88\u8fdc\u7684\uff0c\u5f71\u54cd\u7a0b\u5ea6\u4e3a0\u3002\u6240\u4ee5pytorch3d\u662f\u9009\u62e9\u6cbf\u7740z\u8f74\u6700\u8fd1\u7684k\u4e2aface\u6765\u8ba1\u7b97\u3002\u200b<\/p>\n\n\n\n<p>\u53e6\u5916\uff0csoft rasterizer\u5c06rasterization\u548cshading\u5199\u5230\u4e00\u4e2acuda\u6838\u51fd\u6570\u4e2d\uff0cpytorch3d\u5c06\u5b83\u4eec\u8fdb\u884c\u4e86\u89e3\u8026\u3002rasterizer\u8fd4\u56de\u6bcf\u4e2a\u50cf\u7d20\u7684k\u4e2a\u6700\u8fd1\u7684face\u7684\u4fe1\u606f\uff0c\u5305\u62ecface\u7d22\u5f15\uff0c\u50cf\u7d20\u5728face\u4e2d\u7684\u91cd\u5fc3\u5750\u6807\uff0c\u4ee5\u53ca\u50cf\u7d20\u5230face\u5206\u522b\u5728z\u65b9\u5411\u548cxy\u5e73\u9762\u65b9\u5411\u7684\u8ddd\u79bb\uff08\u5e26\u7b26\u53f7\uff09\u3002shader\u5229\u7528\u8fd9\u4e9b\u4fe1\u606f\u8fdb\u884c\u7740\u8272\u3002\u8fd9\u6837\u7528\u6237\u53ef\u4ee5\u81ea\u5b9a\u4e49shader\u3002<\/p>\n\n\n\n<p><strong>pytorch3d\u4e2d\u7684shader<\/strong><\/p>\n\n\n\n<p>shader\u4e00\u822c\u5c31\u662f\u6839\u636e\u50cf\u7d20\u5bf9\u5e94\u7684face\u91c7\u7528\u67d0\u79cd\u65b9\u5f0f\u8fdb\u884c\u878d\u5408\u3002pytorch3d\u4e2d\u4e24\u79cdshader\u7b97\u6cd5\u5982\u4e0b\uff0c<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"177\" src=\"http:\/\/8.154.33.202\/wp-content\/uploads\/2025\/12\/image-7-1024x177.png\" alt=\"\" class=\"wp-image-547\" srcset=\"http:\/\/8.154.33.202\/wp-content\/uploads\/2025\/12\/image-7-1024x177.png 1024w, http:\/\/8.154.33.202\/wp-content\/uploads\/2025\/12\/image-7-300x52.png 300w, http:\/\/8.154.33.202\/wp-content\/uploads\/2025\/12\/image-7-768x133.png 768w, http:\/\/8.154.33.202\/wp-content\/uploads\/2025\/12\/image-7.png 1104w\" sizes=\"(max-width: 767px) 89vw, (max-width: 1000px) 54vw, (max-width: 1071px) 543px, 580px\" \/><\/figure>\n\n\n\n<p>\u7b97\u6cd51\u8ba1\u7b97silhouette\uff0c\u4e5f\u5c31\u662fsoft rasterizer\u8bba\u6587\u4e2d\u7684\u805a\u5408\u51fd\u6570\uff0cdists\u5c31\u662fsoft rasterizer\u8bba\u6587\u4e2d\u8ba1\u7b97\u7684D\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"366\" src=\"http:\/\/8.154.33.202\/wp-content\/uploads\/2025\/12\/image-8-1024x366.png\" alt=\"\" class=\"wp-image-548\" srcset=\"http:\/\/8.154.33.202\/wp-content\/uploads\/2025\/12\/image-8-1024x366.png 1024w, http:\/\/8.154.33.202\/wp-content\/uploads\/2025\/12\/image-8-300x107.png 300w, http:\/\/8.154.33.202\/wp-content\/uploads\/2025\/12\/image-8-768x274.png 768w, http:\/\/8.154.33.202\/wp-content\/uploads\/2025\/12\/image-8.png 1101w\" sizes=\"(max-width: 767px) 89vw, (max-width: 1000px) 54vw, (max-width: 1071px) 543px, 580px\" \/><\/figure>\n\n\n\n<p>\u7b97\u6cd52\u8ba1\u7b97rgb\u503c\uff0c\u8fd9\u4e5f\u662fRoMe\u4e2d\u4f7f\u7528\u7684shader\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f20\u7edfmesh\u6e32\u67d3\u8fc7\u7a0b\u7684\u4e0d\u53ef\u5fae\u5206\u6027 \u4f20\u7edf\u7684mesh\u6e32\u67d3\u7b97\u6cd5\uff0c\u8ba1\u7b97\u67d0\u4e2a\u50cf\u7d20\u503c\uff0c\u662f\u6839\u636e\u901a\u8fc7\u50cf\u7d20\u7684\u5149\u7ebf\u4e0emesh\u6a21\u578b\u76f8 &hellip; <\/p>\n<p class=\"link-more\"><a href=\"http:\/\/8.154.33.202\/?p=539\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">\u201cpytorch3D\u7684\u53ef\u5fae\u5206\u6e32\u67d3\u201d<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-539","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"http:\/\/8.154.33.202\/index.php?rest_route=\/wp\/v2\/posts\/539"}],"collection":[{"href":"http:\/\/8.154.33.202\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/8.154.33.202\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/8.154.33.202\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/8.154.33.202\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=539"}],"version-history":[{"count":1,"href":"http:\/\/8.154.33.202\/index.php?rest_route=\/wp\/v2\/posts\/539\/revisions"}],"predecessor-version":[{"id":549,"href":"http:\/\/8.154.33.202\/index.php?rest_route=\/wp\/v2\/posts\/539\/revisions\/549"}],"wp:attachment":[{"href":"http:\/\/8.154.33.202\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=539"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/8.154.33.202\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=539"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/8.154.33.202\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=539"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}