{"id":3343,"date":"2009-04-04T22:47:21","date_gmt":"2009-04-04T20:47:21","guid":{"rendered":"http:\/\/www.roumazeilles.net\/news\/fr\/wordpress\/?p=3343"},"modified":"2009-05-31T22:19:30","modified_gmt":"2009-05-31T20:19:30","slug":"abus-de-compression-jpeg","status":"publish","type":"post","link":"https:\/\/www.roumazeilles.net\/news\/fr\/wordpress\/2009\/04\/04\/abus-de-compression-jpeg\/","title":{"rendered":"Abus de compression JPEG"},"content":{"rendered":"<p>Vous savez, le format d&rsquo;image JPEG permet de compresser une photo en ne perdant pas trop d&rsquo;information. Mais il y a perte d&rsquo;information. Vraiment.<\/p>\n<p>La preuve ? Ouvrez une image, sauvegardez-l\u00e0 en JPEG, puis recommencez 600 fois. La d\u00e9gradation va s&rsquo;accumuler :<\/p>\n<p><center><object width=\"400\" height=\"300\"><param name=\"allowfullscreen\" value=\"true\" \/><param name=\"allowscriptaccess\" value=\"always\" \/><param name=\"movie\" value=\"http:\/\/vimeo.com\/moogaloop.swf?clip_id=3750507&amp;server=vimeo.com&amp;show_title=1&amp;show_byline=1&amp;show_portrait=0&amp;color=&amp;fullscreen=1\" \/><embed src=\"http:\/\/vimeo.com\/moogaloop.swf?clip_id=3750507&amp;server=vimeo.com&amp;show_title=1&amp;show_byline=1&amp;show_portrait=0&amp;color=&amp;fullscreen=1\" type=\"application\/x-shockwave-flash\" allowfullscreen=\"true\" allowscriptaccess=\"always\" width=\"400\" height=\"300\"><\/embed><\/object><br \/><a href=\"http:\/\/vimeo.com\/3750507\">Generation Loss<\/a> from <a href=\"http:\/\/vimeo.com\/hadto\">hadto<\/a> on <a href=\"http:\/\/vimeo.com\">Vimeo<\/a>.<\/center><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Vous savez, le format d&rsquo;image JPEG permet de compresser une photo en ne perdant pas trop d&rsquo;information. Mais il y a perte d&rsquo;information. Vraiment. La preuve ? Ouvrez une image, sauvegardez-l\u00e0 en JPEG, puis recommencez 600 fois. La d\u00e9gradation va s&rsquo;accumuler : Generation Loss from hadto on Vimeo.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26,31,86,33,7],"tags":[],"class_list":["post-3343","post","type-post","status-publish","format-standard","hentry","category-film","category-photo","category-photo-graphique","category-technique","category-utiliser-son-reflex-numerique"],"_links":{"self":[{"href":"https:\/\/www.roumazeilles.net\/news\/fr\/wordpress\/wp-json\/wp\/v2\/posts\/3343","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.roumazeilles.net\/news\/fr\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.roumazeilles.net\/news\/fr\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.roumazeilles.net\/news\/fr\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.roumazeilles.net\/news\/fr\/wordpress\/wp-json\/wp\/v2\/comments?post=3343"}],"version-history":[{"count":0,"href":"https:\/\/www.roumazeilles.net\/news\/fr\/wordpress\/wp-json\/wp\/v2\/posts\/3343\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.roumazeilles.net\/news\/fr\/wordpress\/wp-json\/wp\/v2\/media?parent=3343"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.roumazeilles.net\/news\/fr\/wordpress\/wp-json\/wp\/v2\/categories?post=3343"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.roumazeilles.net\/news\/fr\/wordpress\/wp-json\/wp\/v2\/tags?post=3343"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}