{"id":503,"date":"2012-11-20T04:54:52","date_gmt":"2012-11-20T04:54:52","guid":{"rendered":"http:\/\/lousodrome.net\/blog\/light\/?p=503"},"modified":"2013-02-28T03:09:00","modified_gmt":"2013-02-28T03:09:00","slug":"making-the-subtle-obvious","status":"publish","type":"post","link":"http:\/\/lousodrome.net\/blog\/light\/2012\/11\/20\/making-the-subtle-obvious\/","title":{"rendered":"Making the subtle obvious"},"content":{"rendered":"<p>Take a video, decompose it into several frequency components, filter and amplify each one, recompose them back to an output video, profit. <a href=\"http:\/\/nuit-blanche.blogspot.jp\/2012\/10\/eulerian-video-magnification-for.html\">Nuit-Blanche mentioned<\/a> this <a href=\"http:\/\/people.csail.mit.edu\/mrub\/vidmag\/\">paper presented earlier this year at SIGGRAPH<\/a>. I never thought you could actually detect the blood flow from a simple video&#8230;<\/p>\n<p><iframe loading=\"lazy\" src=\"http:\/\/www.youtube.com\/embed\/ONZcjs1Pjmk?rel=0\" height=\"281\" width=\"500\" frameborder=\"0\"><\/iframe><\/p>\n<blockquote><p><strong>Update:<\/strong> more to see in <a href=\"http:\/\/lousodrome.net\/blog\/light\/2013\/02\/28\/making-the-subtle-obvious-follow-up\/\">this follow-up post<\/a>.<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>Take a video, decompose it into several frequency components, filter and amplify each one, recompose them back to an output video, profit. Nuit-Blanche mentioned this paper presented earlier this year at SIGGRAPH. I never thought you could actually detect the &hellip; <a href=\"http:\/\/lousodrome.net\/blog\/light\/2012\/11\/20\/making-the-subtle-obvious\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[20],"tags":[272,276,96,277,274,322,323,64,273,275,46],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.13 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Making the subtle obvious &ndash; Light is beautiful<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/lousodrome.net\/blog\/light\/2012\/11\/20\/making-the-subtle-obvious\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Making the subtle obvious &ndash; Light is beautiful\" \/>\n<meta property=\"og:description\" content=\"Take a video, decompose it into several frequency components, filter and amplify each one, recompose them back to an output video, profit. Nuit-Blanche mentioned this paper presented earlier this year at SIGGRAPH. I never thought you could actually detect the &hellip; Continue reading &rarr;\" \/>\n<meta property=\"og:url\" content=\"http:\/\/lousodrome.net\/blog\/light\/2012\/11\/20\/making-the-subtle-obvious\/\" \/>\n<meta property=\"og:site_name\" content=\"Light is beautiful\" \/>\n<meta property=\"article:published_time\" content=\"2012-11-20T04:54:52+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2013-02-28T03:09:00+00:00\" \/>\n<meta name=\"author\" content=\"Julien Guertault\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@Zavie\" \/>\n<meta name=\"twitter:site\" content=\"@Zavie\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Julien Guertault\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"http:\/\/lousodrome.net\/blog\/light\/2012\/11\/20\/making-the-subtle-obvious\/#article\",\"isPartOf\":{\"@id\":\"http:\/\/lousodrome.net\/blog\/light\/2012\/11\/20\/making-the-subtle-obvious\/\"},\"author\":{\"name\":\"Julien Guertault\",\"@id\":\"https:\/\/lousodrome.net\/blog\/light\/#\/schema\/person\/a16a2a69d73eca763ffdf125c49eaa2f\"},\"headline\":\"Making the subtle obvious\",\"datePublished\":\"2012-11-20T04:54:52+00:00\",\"dateModified\":\"2013-02-28T03:09:00+00:00\",\"mainEntityOfPage\":{\"@id\":\"http:\/\/lousodrome.net\/blog\/light\/2012\/11\/20\/making-the-subtle-obvious\/\"},\"wordCount\":58,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/lousodrome.net\/blog\/light\/#\/schema\/person\/a16a2a69d73eca763ffdf125c49eaa2f\"},\"keywords\":[\"amplification\",\"Eulerian\",\"filtering\",\"Laplacian\",\"obvious\",\"research\",\"science\",\"SIGGRAPH\",\"subtle\",\"temporal variation\",\"video\"],\"articleSection\":[\"Science\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"http:\/\/lousodrome.net\/blog\/light\/2012\/11\/20\/making-the-subtle-obvious\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"http:\/\/lousodrome.net\/blog\/light\/2012\/11\/20\/making-the-subtle-obvious\/\",\"url\":\"http:\/\/lousodrome.net\/blog\/light\/2012\/11\/20\/making-the-subtle-obvious\/\",\"name\":\"Making the subtle obvious &ndash; 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