{"id":6,"date":"2010-01-16T19:37:47","date_gmt":"2010-01-16T19:37:47","guid":{"rendered":"http:\/\/grandmaster.student.utwente.nl\/?p=6"},"modified":"2010-01-16T19:37:47","modified_gmt":"2010-01-16T19:37:47","slug":"raw-shaping","status":"publish","type":"post","link":"https:\/\/www.grandmaster.nu\/blog\/?p=6","title":{"rendered":"Raw Shaping"},"content":{"rendered":"<p>My current big project is called &#8216;<a href=\"http:\/\/www.rawshaping.com\/\">Raw Shaping<\/a>&#8216;, and is part of an Industrial Design research project. The object is to provide designers with an intuitive tool that allows them to simultaneously interact with real-world and virtual models of whatever they are working on. It&#8217;s a real challenge and my initial approach is going to involve a lot of computer vision technology. My biggest issue is to achieve realtime 3D reconstruction on commodity hardware&#8230; I&#8217;ll let you know when I&#8217;ve got something working properly.<\/p>\n<p>A lot of approaches in computer vision are either very slow or not robust enough to actually use. At the moment of writing I&#8217;m using <a href=\"http:\/\/opencv.willowgarage.com\/\">openCV<\/a>&#8216;s built-in dense stereo correspondence to create a disparity map from two camera images, and using this as the basis for a 3D point cloud. Although it works somewhat, I&#8217;d like to be able to use a simpler form of image rectification or make use of another, more robust algorithm that results in a better reconstruction.<\/p>\n<p>Generating a 3d model from the disparity map is also a lot slower than I&#8217;ve hoped. At the moment I&#8217;m using an <a href=\"http:\/\/www.openscenegraph.org\">OpenSceneGraph<\/a> heightfield primitive, but setting the heights for all points is simply too slow at even modest resolutions of the disparity map. I&#8217;ll attempt point sprites next, and if that&#8217;s also too slow I&#8217;m looking at some GPU-based implementation.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>My current big project is called &#8216;Raw Shaping&#8216;, and is part of an Industrial Design research project. The object is to provide designers with an intuitive tool that allows them to simultaneously interact with real-world and virtual models of whatever they are working on. It&#8217;s a real challenge and my <a class=\"more-link\" href=\"https:\/\/www.grandmaster.nu\/blog\/?p=6\">Read More&#8230;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[5,9],"tags":[46,23,24,29],"_links":{"self":[{"href":"https:\/\/www.grandmaster.nu\/blog\/index.php?rest_route=\/wp\/v2\/posts\/6"}],"collection":[{"href":"https:\/\/www.grandmaster.nu\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.grandmaster.nu\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.grandmaster.nu\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.grandmaster.nu\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6"}],"version-history":[{"count":0,"href":"https:\/\/www.grandmaster.nu\/blog\/index.php?rest_route=\/wp\/v2\/posts\/6\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.grandmaster.nu\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.grandmaster.nu\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.grandmaster.nu\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}