{"id":13993,"date":"2023-02-13T09:02:00","date_gmt":"2023-02-13T01:02:00","guid":{"rendered":"http:\/\/139.9.1.231\/?p=13993"},"modified":"2023-02-14T10:17:48","modified_gmt":"2023-02-14T02:17:48","slug":"sfmstructure-from-motion","status":"publish","type":"post","link":"http:\/\/139.9.1.231\/index.php\/2023\/02\/13\/sfmstructure-from-motion\/","title":{"rendered":"\u57fa\u4e8eSfM(Structure from motion)\u7684\u4e09\u7ef4\u91cd\u5efa"},"content":{"rendered":"\n<p>      SfM\uff08Structure from motion\uff09 \u662f\u4e00\u79cd\u4e09\u7ef4\u91cd\u5efa\u7684\u65b9\u6cd5\uff0c\u7528\u4e8e\u4ecemotion\u4e2d\u5b9e\u73b03D\u91cd\u5efa\u3002\u4e5f\u5c31\u662f\u4ece\u65f6\u95f4\u7cfb\u5217\u76842D\u56fe\u50cf\u4e2d\u63a8\u7b973D\u4fe1\u606f\u3002<\/p>\n\n\n\n<p>     <strong>\u4eba\u7684\u5927\u8111\u53ef\u4ee5\u4ece\u52a8\u7684\u7269\u4f53\u4e2d\u53d6\u5f97\u5176\u4e09\u7ef4\u7684\u4fe1\u606f\uff0c\u662f\u56e0\u4e3a\u5927\u8111\u5728\u52a8\u76842D\u56fe\u50cf\u4e2d\u627e\u5230\u4e86\u5339\u914d\u7684\u5730\u65b9\uff0c\u5373Corresponding area \uff08points\uff09\u3002\u7136\u540e\u901a\u8fc7\u5339\u914d\u70b9\u4e4b\u95f4\u7684\u89c6\u5dee\u5f97\u5230\u76f8\u5bf9\u7684\u6df1\u5ea6\u4fe1\u606f\uff0c\u5728\u8fd9\u4e00\u70b9\u4e0a\uff0c\u539f\u7406\u548c\u57fa\u4e8eStereo\u7684\u4e09\u7ef4\u91cd\u5efa\u76f8\u540c\u3002<\/strong><\/p>\n\n\n\n<p>     SfM\u7684\u8f93\u5165\u662f\u4e00\u6bb5motion\u6216\u8005\u4e00\u65f6\u95f4\u7cfb\u5217\u76842D\u56fe\u7fa4\uff0c\u5982\u4e0b\u56fe\u6240\u793a [1]\uff0c<strong>\u8fd9\u91cc\u4e0d\u9700\u8981\u4efb\u4f55\u76f8\u673a\u7684\u4fe1\u606f\u3002\u7136\u540e\u901a\u8fc72D\u56fe\u4e4b\u95f4\u7684\u5339\u914d\u53ef\u4ee5\u63a8\u65ad\u51fa\u76f8\u673a\u7684\u5404\u9879\u53c2\u6570<\/strong>\u3002<strong>Corresponding points\u53ef\u4ee5\u7528SIFT\uff0cSURF\u6765\u5339\u914d\uff0c\u4e5f\u53ef\u4ee5\u7528\u6700\u65b0\u7684AKAZE\uff08SIFT\u7684\u6539\u8fdb\u7248\uff0c2010\uff09\u6765\u5339\u914d<\/strong>\u3002\u800cCorresponding points\u7684\u8ddf\u8e2a\u5219\u53ef\u4ee5\u7528Lucas-Kanede\u7684Optical Flow\u6765\u5b8c\u6210\u3002<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img src=\"https:\/\/pic2.zhimg.com\/v2-8e3d193401936d0804a79d19169a4125_r.jpg\" alt=\"\"\/><\/figure><\/div>\n\n\n\n<p>      \u5728SfM\u4e2d\uff0c\u8bef\u5339\u914d\u4f1a\u9020\u6210\u8f83\u5927\u7684Error\uff0c\u6240\u4ee5\u8981\u5bf9\u5339\u914d\u8fdb\u884c\u7b5b\u9009\uff0c\u76ee\u524d\u6d41\u884c\u7684\u65b9\u6cd5\u662fRANSAC\uff08Random Sample Consensus\uff09\u30022D\u7684\u8bef\u5339\u914d\u70b9\u53ef\u4ee5\u5e94\u75283D\u7684Geometric\u7279\u5f81\u6765\u8fdb\u884c\u6392\u9664\u3002<\/p>\n\n\n\n<p>      Bundler [2] \u5c31\u662f\u4e00\u79cdSfM\u7684\u65b9\u6cd5\uff0cBundler\u4f7f\u7528\u4e86\u57fa\u4e8eSIFT\u7684\u5339\u914d\u7b97\u6cd5\uff0c\u5e76\u4e14\u5bf9\u5339\u914d\u8fdb\u884c\u4e86\u8fc7\u6ee4\u53bb\u566a\u5904\u7406\u3002\u4e0b\u56fe\u663e\u793a\u4e86\u4e00\u7ec4\u6d4b\u8bd5\u6570\u636e\uff08\u4e00\u65f6\u95f4\u7cfb\u5217\u76842D\u56fe\u7fa4\uff09\uff1a<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img src=\"https:\/\/pic1.zhimg.com\/v2-791ece829728f90cd3341adf17137090_r.jpg\" alt=\"\"\/><\/figure><\/div>\n\n\n\n<p>         \u5c06\u8fd9\u4e9b\u56fe\u7247\u4fdd\u5b58\u5230\u540c\u4e00\u4e2a\u6587\u4ef6\u5939\uff0c\u7136\u540e\u5c06\u6587\u4ef6\u5939\u7684\u76ee\u5f55\u8f93\u5165\uff0cBundler\u4f1a\u81ea\u884c\u5904\u7406\uff0c\u4e4b\u540e\u4f1a\u5f97\u5230\u4e00\u7fa4Corresponding points\u3002\u6bd4\u5982\u5176\u4e2d\u7684\u4e00\u7ec4Corresponding points (A1,A2,A3,&#8230;Am)\uff0c\u5176\u5b9e\u4ed6\u4eec\u6765\u81ea\u540c\u4e00\u4e2a\u4e09\u7ef4\u70b9A\u7684Projection\u3002\u6240\u4ee5\u901a\u8fc7\u8fd9\u4e9b\u70b9\u53ef\u4ee5\u91cd\u5efa\u4e09\u7ef4\u70b9A\u3002\u7136\u540e\u5c06\u5f88\u591a\u7ec4Corresponding points \u8fdb\u884c\u91cd\u5efa\uff0c\u5219\u5f97\u5230\u4e86\u4e00\u7fa4\u4e09\u7ef4\u7684\u70b9\uff0c\u8fd9\u91cc\u79f0\u4e3a3D\u70b9\u9635\u3002<\/p>\n\n\n\n<p>\u7136\u540e3D\u70b9\u9635\u53ef\u4ee5\u901a\u8fc7MeshLab\uff08\u5f00\u6e90Source\uff0c\u652f\u6301Windows\/Linux\/Mac\uff09\u6765\u91cd\u5efa\u7a00\u758f\u7684Mesh\u3002\u4e5f\u53ef\u4ee5\u901a\u8fc7PMVS\uff08Patch-based Multi-view Stereo\uff09\u6765\u91cd\u5efaDense\u7684Mesh[3]\u3002<\/p>\n\n\n\n<p>[1] \u6e80\u4e0a\u80b2\u4e45\u3000&#8221;<a href=\"http:\/\/www.am.sanken.osaka-u.ac.jp\/~mitsugami\/pdf\/dommag\/mitsugami-ite-2011.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">Structure from Motion &#8211; Osaka University<\/a>&#8220;\u3000\u6620\u50cf\u60c5\u62a5\u30e1\u30c7\u30a3\u30a2\u5b66\u4f1a\u5fd7\u3000Vol.65, No.4, pp.479-482, 2011.<\/p>\n\n\n\n<p>[2] N.Snavely, S.M. Seitz, R.Szeliski, &#8220;Modeling the World from Internet Photo Collections&#8221;, International Journal of Computer Vision, vol.80, no.2, 2008.<\/p>\n\n\n\n<p>[3] Y. Furukawa, J.Ponce, &#8220;Accurate, Dense and Robust Multi-view Stereopsis&#8221; IEEE Transactions on Pattern Analysis and Machine Intelligence, 2009.<\/p>\n\n\n\n<p class=\"has-yellow-background-color has-background\"><strong>\u8865\u5145\uff1a\u901a\u8fc7\u89c6\u5deed\u6c42\u89e3\u6df1\u5ea6\u56fe\uff1a<\/strong><\/p>\n\n\n\n<p>        <strong>\u540c\u4e00\u6c34\u5e73\u7ebf\u4e0a\u7684\u4e24\u4e2a\u7167\u76f8\u673a\u62cd\u6444\u5230\u7684\u7167\u7247\u662f\u670d\u4ece\u4ee5\u4e0b\u7269\u7406\u89c4\u5f8b\u7684\uff1a<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"436\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/02\/image-392-1024x436.png\" alt=\"\" class=\"wp-image-14034\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/02\/image-392-1024x436.png 1024w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/02\/image-392-300x128.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/02\/image-392-768x327.png 768w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/02\/image-392.png 1486w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"562\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/02\/image-393-1024x562.png\" alt=\"\" class=\"wp-image-14036\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/02\/image-393-1024x562.png 1024w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/02\/image-393-300x165.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/02\/image-393-768x422.png 768w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/02\/image-393-1536x843.png 1536w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/02\/image-393.png 1587w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"309\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/02\/image-394-1024x309.png\" alt=\"\" class=\"wp-image-14038\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/02\/image-394-1024x309.png 1024w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/02\/image-394-300x90.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/02\/image-394-768x232.png 768w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/02\/image-394-1536x463.png 1536w, http:\/\/139.9.1.231\/wp-content\/uploads\/2023\/02\/image-394.png 1575w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>        \u8fd9\u79cd\u601d\u8def\u6700\u5148\u5e94\u7528\u4e8e\u4f7f\u7528\u5355\u5f20\u56fe\u7247\u751f\u6210\u65b0\u89c6\u89d2\u95ee\u9898\uff1a<a rel=\"noreferrer noopener\" href=\"https:\/\/arxiv.org\/abs\/1506.06825\" target=\"_blank\">DeepStereo<\/a>&nbsp;\u548c&nbsp;<a rel=\"noreferrer noopener\" href=\"https:\/\/arxiv.org\/abs\/1604.03650\" target=\"_blank\">Deep3d<\/a>\u4e4b\u4e2d, \u5728\u4f20\u7edf\u7684\u89c6\u89d2\u751f\u6210\u95ee\u9898\u4e4b\u4e2d\uff0c\u9996\u5148\u4f1a\u5229\u7528\u4e24\u5f20\u56fe\uff08\u6216\u591a\u5f20\uff09\u6c42\u53d6\u56fe\u7247\u4e4b\u95f4\u7684\u89c6\u5deed\uff0c\u5176\u6b21\u901a\u8fc7\u5f97\u5230\u7684\u89c6\u5dee\uff08\u76f8\u5f53\u4e8e\u4e09\u7ef4\u573a\u666f\uff09\u6765\u751f\u6210\u65b0\u89c6\u89d2<\/p>\n","protected":false},"excerpt":{"rendered":"<p>SfM\uff08Structure from motion\uff09 \u662f\u4e00\u79cd\u4e09\u7ef4\u91cd\u5efa\u7684\u65b9\u6cd5\uff0c\u7528\u4e8e\u4ecemotion\u4e2d\u5b9e\u73b03D\u91cd\u5efa\u3002 &hellip; <a href=\"http:\/\/139.9.1.231\/index.php\/2023\/02\/13\/sfmstructure-from-motion\/\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">\u57fa\u4e8eSfM(Structure from motion)\u7684\u4e09\u7ef4\u91cd\u5efa<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[4,33],"tags":[],"_links":{"self":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/13993"}],"collection":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/comments?post=13993"}],"version-history":[{"count":17,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/13993\/revisions"}],"predecessor-version":[{"id":14061,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/13993\/revisions\/14061"}],"wp:attachment":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/media?parent=13993"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/categories?post=13993"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/tags?post=13993"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}