{"id":2296,"date":"2015-05-22T23:23:40","date_gmt":"2015-05-23T03:23:40","guid":{"rendered":"http:\/\/aptgadget.com\/?p=2296"},"modified":"2015-05-22T23:23:40","modified_gmt":"2015-05-23T03:23:40","slug":"google-researchers-use-user-uploaded-photos-to-create-time-lapse-videos","status":"publish","type":"post","link":"https:\/\/aptgadget.com\/fr\/google-researchers-use-user-uploaded-photos-to-create-time-lapse-videos\/","title":{"rendered":"Des chercheurs de Google utilisent des photos t\u00e9l\u00e9charg\u00e9es par les utilisateurs pour cr\u00e9er des vid\u00e9os en acc\u00e9l\u00e9r\u00e9"},"content":{"rendered":"

Selon une nouvelle \u00e9tude rapport<\/a>Dans le cadre du projet \"Time-lapse mining\", une \u00e9quipe de chercheurs form\u00e9e par Google et l'universit\u00e9 de Washington a cr\u00e9\u00e9 pr\u00e8s de 11 000 vid\u00e9os en acc\u00e9l\u00e9r\u00e9 de diff\u00e9rents sites d'int\u00e9r\u00eat dans le monde entier \u00e0 partir des photos t\u00e9l\u00e9charg\u00e9es par les utilisateurs. Les chercheurs, qui ont utilis\u00e9 environ 86 millions de photos partag\u00e9es publiquement en ligne, ont d\u00e9clar\u00e9 que le domaine de recherche sur lequel ils travaillaient s'appelait \"time-lapse mining\".<\/p>\n

Les chercheurs ont cr\u00e9\u00e9 exactement 10 728 vid\u00e9os en acc\u00e9l\u00e9r\u00e9 de divers sites embl\u00e9matiques diss\u00e9min\u00e9s dans le monde entier, montrant comment ils ont chang\u00e9 au fil du temps. Ces sites comprennent des villes, des constructions\/r\u00e9novations de b\u00e2timents importants et des changements m\u00e9t\u00e9orologiques \u00e0 l'\u00e9chelle g\u00e9ographique. Le time-lapse montre des changements g\u00e9ologiques tr\u00e8s importants, notamment la fonte des glaciers et des sites en d\u00e9composition.<\/p>\n

La plupart des vid\u00e9os en acc\u00e9l\u00e9r\u00e9 contiennent des images \u00e9tal\u00e9es sur une p\u00e9riode de plusieurs ann\u00e9es. En g\u00e9n\u00e9ral, une cam\u00e9ra install\u00e9e \u00e0 un endroit donn\u00e9 est utilis\u00e9e pour enregistrer des vid\u00e9os en acc\u00e9l\u00e9r\u00e9 et, apr\u00e8s avoir rassembl\u00e9 suffisamment de vid\u00e9os \u00e9tal\u00e9es sur plusieurs mois ou ann\u00e9es, elle est ensuite divis\u00e9e en plusieurs petits morceaux afin de cr\u00e9er une vid\u00e9o en acc\u00e9l\u00e9r\u00e9.<\/p>\n

Cependant, les chercheurs ont d\u00fb travailler dur pour rassembler les photos afin d'obtenir une vid\u00e9o time-lapse d'un seul endroit. Ils ont utilis\u00e9 des algorithmes complexes et des \u00e9quations math\u00e9matiques pour mesurer la distance entre les points cl\u00e9s et les rendre en cons\u00e9quence.<\/p>\n

Selon les chercheurs, \"cette capacit\u00e9 est transformatrice ; alors qu'il fallait auparavant des mois ou des ann\u00e9es pour cr\u00e9er un tel time-lapse, nous pouvons d\u00e9sormais cr\u00e9er presque instantan\u00e9ment des milliers de time-lapses couvrant les endroits les plus populaires de la plan\u00e8te\". Les chercheurs ont \u00e9galement d\u00e9clar\u00e9 que 11 000 vid\u00e9os time-lapse n'\u00e9taient que le d\u00e9but de ce nouveau domaine qui a un grand potentiel \u00e0 explorer pour d'autres id\u00e9es. De plus en plus de personnes t\u00e9l\u00e9chargent des photos sur l'internet, qui peuvent \u00eatre utilis\u00e9es pour cr\u00e9er des vid\u00e9os similaires de n'importe quel endroit.<\/p>\n

 <\/p>","protected":false},"excerpt":{"rendered":"

According to a new research report, a team of researchers formed by Google and University of Washington have created almost 11,000 time-lapse videos of different landmark sites all over the world from the photos uploaded by users. The researchers, which used about 86 million photos that were publicly shared online, said that the researched field …<\/p>","protected":false},"author":3,"featured_media":2297,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[],"class_list":["post-2296","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"yoast_head":"\nGoogle researchers use user-uploaded photos to create time-lapse videos - AptGadget.com<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/aptgadget.com\/fr\/google-researchers-use-user-uploaded-photos-to-create-time-lapse-videos\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Google researchers use user-uploaded photos to create time-lapse videos\" \/>\n<meta property=\"og:description\" content=\"According to a new research report, a team of researchers formed by Google and University of Washington have created almost 11,000 time-lapse videos of different landmark sites all over the world from the photos uploaded by users. 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