{"id":2417,"date":"2021-10-06T09:56:03","date_gmt":"2021-10-06T07:56:03","guid":{"rendered":"https:\/\/www.infordisa.com\/soc\/?post_type=glossary&#038;p=2417"},"modified":"2021-10-06T09:56:03","modified_gmt":"2021-10-06T07:56:03","slug":"deepfake","status":"publish","type":"glossary","link":"https:\/\/www.infordisa.com\/soc\/ca\/glosario-definicion\/deepfake\/","title":{"rendered":"deepfake"},"content":{"rendered":"<p><i><b>Deepfake<\/b><\/i>&nbsp;o&nbsp;<b>ultra irreal<\/b>&nbsp;<sup id=\"cite_ref-1\" class=\"reference separada\"><\/sup>\u00e9s un acr\u00f2nim de l&#039;angl\u00e8s format per les paraules&nbsp;<i>fake<\/i>, Falsificaci\u00f3, i&nbsp;<i>deep learning<\/i>, Aprenentatge profund.<sup id=\"cite_ref-PC_2-0\" class=\"reference separada\"><\/sup>\u00c9s una t\u00e8cnica d&#039;intel\u00b7lig\u00e8ncia artificial que permet editar v\u00eddeos falsos de persones que aparentment s\u00f3n reals, utilitzant per a aix\u00f2 algoritmes d&#039;aprenentatge no supervisats, coneguts en espanyol com RGAs (Xarxa generativa antag\u00f2nica), i v\u00eddeos o imatges ja existents.<sup id=\"cite_ref-DF_3-0\" class=\"reference separada\"><\/sup>El resultat final d&#039;aquesta t\u00e8cnica \u00e9s un v\u00eddeo molt realista, encara que fictici. Entre els exemples destacats d&#039;\u00fas de l&#039;\u00fas de la t\u00e8cnica de l&#039;&nbsp;<i>deepfake<\/i><sup id=\"cite_ref-4\" class=\"reference separada\"><\/sup>&nbsp;es troben dues escenes de la pel\u00b7l\u00edcula&nbsp;<i>Rogue One una hist\u00f2ria de Star Wars<\/i>&nbsp;(2016) en qu\u00e8 la Princesa Leia apareix amb la cara de Carrie Fisher quan era jove, quan en realitat va ser interpretada per l&#039;actriu noruega Ingvild Deila.<sup id=\"cite_ref-KDN_5-0\" class=\"reference separada\"><\/sup>\u200b<\/p>\n<p>Aquesta t\u00e8cnica de model de RGAs es va popularitzar per la creaci\u00f3 de contingut falsificat en qu\u00e8 un actor o personatge de l&#039;espectacle apareixia participant en un v\u00eddeo pornogr\u00e0fic realitzant actes sexuals. En aquesta modalitat de v\u00eddeos falsos, aquests s\u00f3n creats mitjan\u00e7ant la combinaci\u00f3 d&#039;un v\u00eddeo pornogr\u00e0fic (que \u00e9s utilitzat com a referent per a l&#039;algoritme) m\u00e9s un altre v\u00eddeo o imatge de l&#039;actor o personatge, el qual \u00e9s processat pel programa inform\u00e0tic amb t\u00e8cniques&nbsp;<i>deepfake<\/i>. No importa que l&#039;actor o personatge mai hagi realitzat escenes o v\u00eddeos pornogr\u00e0fics, precisament el que es persegueix \u00e9s crear l&#039;efecte, el m\u00e9s realista possible, que alguna cosa aix\u00ed ha passat. A causa de l&#039;abund\u00e0ncia de contingut pornogr\u00e0fic que hi ha a Internet, els v\u00eddeos&nbsp;<i>deepfake<\/i>&nbsp;acostumen a crear falsificacions pornogr\u00e0fiques de celebritats encara que cal ressaltar que tamb\u00e9 s\u00f3n usats per falsificar not\u00edcies i crear falses not\u00edcies malintencionats. Aquesta tecnologia emergent va veure el seu origen en el m\u00f3n de la investigaci\u00f3 amb aplicacions pr\u00e0ctiques en el m\u00f3n de el cinema com una alternativa als processos construccions digitals que tendeixen a generar alts costos. Potser l&#039;exemple m\u00e9s fam\u00f3s de la implementaci\u00f3 d&#039;aquesta tecnologia al cinema \u00e9s en l&#039;\u00faltima pel\u00b7l\u00edcula de la saga Star Wars. En la qual l&#039;actriu Carrie Fisher, coneguda pel seu personatge princesa Leia, havia mort durant el seu rodatge, de manera que va caldre fer \u00fas d&#039;aquesta t\u00e8cnica per a les escenes que faltava gravar. Gr\u00e0cies als algoritmes RGA es poden generar fotografies que semblen aut\u00e8ntiques a observadors humans. Per exemple, una fotografia sint\u00e8tica d&#039;un gat que aconsegueixi enganyar el discriminador (una de les parts funcionals de l&#039;algoritme) \u00e9s probable que porti a una persona qualsevol a acceptar-ho com una fotografia real.<sup id=\"cite_ref-ITT_GANs_6-0\" class=\"reference separada\"><\/sup>\u200b<\/p>","protected":false},"excerpt":{"rendered":"<p>Deepfake o ultra irreal \u00e9s un acr\u00f2nim de l&#039;angl\u00e8s format per les paraules mentida, falsificaci\u00f3, i deep learning, aprenentatge profund.<\/p>","protected":false},"author":2,"featured_media":0,"menu_order":0,"template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-2417","glossary","type-glossary","status-publish","hentry"],"acf":[],"yoast_head":"<title>deepfake - INFORDISA \/ Security Operations Center<\/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:\/\/www.infordisa.com\/soc\/ca\/glossari-definicio\/deepfake\/\" \/>\n<meta property=\"og:locale\" content=\"ca_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"deepfake - INFORDISA \/ Security Operations Center\" \/>\n<meta property=\"og:description\" content=\"Deepfake o ultra irreal &#8203; 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