{"id":16557,"date":"2018-07-22T13:14:28","date_gmt":"2018-07-22T13:14:28","guid":{"rendered":"https:\/\/blogs.funiber.org\/pt\/?p=16557"},"modified":"2018-07-20T13:22:42","modified_gmt":"2018-07-20T13:22:42","slug":"funiber-videos-falsos","status":"publish","type":"post","link":"https:\/\/www.funiber.blog\/pt\/tecnologias-tic\/2018\/07\/22\/funiber-videos-falsos","title":{"rendered":"Como identificar v\u00eddeos falsos"},"content":{"rendered":"<h2>V\u00eddeos &#8220;deepfake&#8221; s\u00e3o montagens que usam Intelig\u00eancia Artificial para criar identidades ou not\u00edcias falsas, mas, de acordo com especialistas, podem ser identificadas por meio do piscar de olhos<\/h2>\n<p>Por meio de uma ferramenta que monitora os movimentos oculares em montagens de v\u00eddeo, o professor e pesquisador da Universidade da Alb\u00e2nia,\u00a0<a href=\"https:\/\/www.linkedin.com\/in\/siwei-lyu-0806022\/\" target=\"_blank\" rel=\"noopener\">Siwei Lyu<\/a>\u00a0e sua equipe conseguiram distinguir os v\u00eddeos falsos com uma precis\u00e3o de 99%.<!--more--><\/p>\n<p>A pessoa pisca em m\u00e9dia 17 vezes por minuto. Mas a maioria das fotografias n\u00e3o capturam as pessoas de olhos fechados, assim como em montagens de v\u00eddeo. Para descobrir se o v\u00eddeo \u00e9 falso, a chave est\u00e1 nos movimentos dos olhos, explica Siwei Lyu, em um artigo da <a href=\"https:\/\/www.bbc.com\/mundo\/noticias-44482470\">BBC<\/a>.<\/p>\n<p>Um exemplo de uma das montagens de v\u00eddeo mais famosas \u00e9 o do ex-presidente\u00a0<a href=\"https:\/\/www.youtube.com\/watch?v=AmUC4m6w1wo\" target=\"_blank\" rel=\"noopener\">Barack Obama,<\/a> em 2017. Utilizou-se a Intelig\u00eancia Artificial para modelar com precis\u00e3o como o Obama movia a boca quando falava. A t\u00e9cnica permitiu colocar qualquer palavra sint\u00e9tica na boca do ex-presidente Obama.<\/p>\n<p>Al\u00e9m disso, a\u00a0<a href=\"https:\/\/www.bbc.com\/mundo\/noticias-41240444\" target=\"_blank\" rel=\"noopener\">BBC<\/a>, em uma publica\u00e7\u00e3o anterior, sugeriu fazer as seguintes perguntas para identificar v\u00eddeos falsos:<\/p>\n<ul>\n<li>Qual \u00e9 a fonte da publica\u00e7\u00e3o?<\/li>\n<li>Existe a localiza\u00e7\u00e3o onde isso aconteceu?<\/li>\n<li>Em que m\u00eddia foi publicado?<\/li>\n<li>Existe mais de uma prova que evidencie o que \u00e9 afirmado nos v\u00eddeos?<\/li>\n<\/ul>\n<p>O fotojornalista\u00a0<a href=\"https:\/\/www.linkedin.com\/in\/josepguijarro\/\" target=\"_blank\" rel=\"noopener\">Josep Guijarro<\/a>\u00a0explica no artigo, <a href=\"http:\/\/www.revistaenigmas.com\/secciones\/grandes-reportajes\/reconocer-videos-falsos-youtube\" target=\"_blank\" rel=\"noopener\">Como reconhecer v\u00eddeos falsos no YouTube<\/a> como o tratamento digital de v\u00eddeos torna extremamente dif\u00edcil a tarefa de especialistas em decifrar a autenticidade das not\u00edcias. A integra\u00e7\u00e3o de programas como After Effects e Photoshop, com aplica\u00e7\u00f5es 3D, torna as possibilidades criativas praticamente infinitas, com poucos recursos.<\/p>\n<p>A\u00a0<a href=\"https:\/\/www.funiber.org.br\/mestrados-tecnologias-tic\" target=\"_blank\" rel=\"noopener\">\u00c1rea em Tecnologia<\/a>, patrocinada pela\u00a0<a href=\"http:\/\/www.funiber.org.br\/\" target=\"_blank\" rel=\"noopener\">FUNIBER<\/a>, promove o uso das Novas Tecnologias de Informa\u00e7\u00e3o e Comunica\u00e7\u00e3o (TICs) aplicadas a diferentes tipos de projetos com responsabilidade no tratamento e uso de dados.<\/p>\n<p>Fonte:\u00a0<a href=\"https:\/\/www.bbc.com\/mundo\/noticias-44482470\" target=\"_blank\" rel=\"noopener\">El peque\u00f1o detalle al que debes prestar atenci\u00f3n para saber si un video es \u201cdeepfake\u201d<\/a><\/p>\n<p>Foto: Todos os direitos reservados<\/p>\n","protected":false},"excerpt":{"rendered":"<p>V\u00eddeos &#8220;deepfake&#8221; s\u00e3o montagens que usam Intelig\u00eancia Artificial para criar identidades ou not\u00edcias falsas, mas, de acordo com especialistas, podem ser identificadas por meio do piscar de olhos Por meio de uma ferramenta que monitora os movimentos oculares em montagens de v\u00eddeo, o professor e pesquisador da Universidade da Alb\u00e2nia,\u00a0Siwei Lyu\u00a0e sua equipe conseguiram distinguir [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":16558,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_newsletter_tier_id":0,"footnotes":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[6],"tags":[1242,365,302,855,285,408,119,4063,4064,248,911,180,671,641,255,26,328],"jetpack_publicize_connections":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.7 - 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