{"id":744,"date":"2007-11-07T06:40:50","date_gmt":"2007-11-07T11:40:50","guid":{"rendered":"http:\/\/photondetector.com\/blog\/2007\/11\/07\/image-colorization\/"},"modified":"2007-11-07T07:41:12","modified_gmt":"2007-11-07T12:41:12","slug":"image-colorization","status":"publish","type":"post","link":"https:\/\/photondetector.com\/blog\/2007\/11\/07\/image-colorization\/","title":{"rendered":"Insane new image colorization interface &amp; algorithm"},"content":{"rendered":"<div id=\"fb-root\"><\/div>\n<p>Here&#8217;s the abstract of a paper by <a href=\"http:\/\/www.cs.huji.ac.il\/%7Ealevin\/\">Anat Levin<\/a>, <a href=\"http:\/\/www.cs.huji.ac.il\/%7Edanix\/\">Dani Lischinski<\/a>, and <a href=\"http:\/\/www.cs.huji.ac.il\/%7Eyweiss\/\">Yair Weiss<\/a>:<\/p>\n<blockquote><p>\nColorization is a computer-assisted process of adding color to a monochrome image or movie. The process typically involves segmenting images into regions and tracking these regions across image sequences. Neither of these tasks can be performed reliably in practice; consequently, colorization requires considerable user intervention and remains a tedious, time-consuming, and expensive task.<\/p>\n<p>In this paper we present a simple colorization method that requires neither precise image segmentation, nor accurate region tracking. Our method is based on a simple premise: neighboring pixels in space-time that have similar intensities should have similar colors. We formalize this premise using a quadratic cost function and obtain an optimization problem that can be solved efficiently using standard techniques. In our approach an artist only needs to annotate the image with a few color scribbles, and the indicated colors are automatically propagated in both space and time to produce a fully colorized image or sequence. We demonstrate that high quality colorizations of stills and movie clips may be obtained from a relatively modest amount of user input.\n<\/p><\/blockquote>\n<p>Both the <a href=\"http:\/\/www.cs.huji.ac.il\/~yweiss\/Colorization\/\">interface and the results<\/a> are rather amazing. Tons of examples and Matlab source code included.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Here&#8217;s the abstract of a paper by Anat Levin, Dani Lischinski, and Yair Weiss: Colorization is a computer-assisted process of adding color to a monochrome image or movie. The process typically involves segmenting images into regions and tracking these regions across image sequences. Neither of these tasks can be performed reliably in practice; consequently, colorization [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[110,370,420,469,1115,1909],"class_list":["post-744","post","type-post","status-publish","format-standard","hentry","category-extra-geeky","tag-anat-levin","tag-colorize","tag-dani-lischinski","tag-digital","tag-matlab","tag-yair-weiss"],"_links":{"self":[{"href":"https:\/\/photondetector.com\/blog\/wp-json\/wp\/v2\/posts\/744","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/photondetector.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/photondetector.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/photondetector.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/photondetector.com\/blog\/wp-json\/wp\/v2\/comments?post=744"}],"version-history":[{"count":0,"href":"https:\/\/photondetector.com\/blog\/wp-json\/wp\/v2\/posts\/744\/revisions"}],"wp:attachment":[{"href":"https:\/\/photondetector.com\/blog\/wp-json\/wp\/v2\/media?parent=744"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/photondetector.com\/blog\/wp-json\/wp\/v2\/categories?post=744"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/photondetector.com\/blog\/wp-json\/wp\/v2\/tags?post=744"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}<!-- WP Super Cache is installed but broken. The constant WPCACHEHOME must be set in the file wp-config.php and point at the WP Super Cache plugin directory. -->