{"id":2317,"date":"2020-04-07T06:27:33","date_gmt":"2020-04-07T13:27:33","guid":{"rendered":"https:\/\/melindaozel.com\/?p=2317"},"modified":"2025-02-25T14:38:09","modified_gmt":"2025-02-25T19:38:09","slug":"bypassing-vr-headset-occlusion-in-face-tracking","status":"publish","type":"post","link":"https:\/\/melindaozel.com\/it\/bypassing-vr-headset-occlusion-in-face-tracking\/","title":{"rendered":"Bypassare l'occlusione dell'auricolare VR nel tracciamento dei volti"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"2317\" class=\"elementor elementor-2317\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-6da80560 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6da80560\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-2724d854\" data-id=\"2724d854\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7d11bd1c elementor-widget elementor-widget-text-editor\" data-id=\"7d11bd1c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2><span style=\"font-weight: 500;\">Rintracciare ci\u00f2 che non si pu\u00f2 vedere<\/span><\/h2><p><div id='gallery-1' class='gallery galleryid-2317 gallery-columns-4 gallery-size-thumbnail'><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/melindaozel.com\/it\/bypassing-vr-headset-occlusion-in-face-tracking\/f3890bc6-9e9d-4b37-9b06-22ad9a97eaaf\/#main'><img decoding=\"async\" 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decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/i0.wp.com\/melindaozel.com\/wp-content\/uploads\/2020\/04\/DA7A6E86-16C6-4B5E-B4AD-89B9EF84DD12.jpg?resize=150%2C150&amp;ssl=1\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/melindaozel.com\/wp-content\/uploads\/2020\/04\/DA7A6E86-16C6-4B5E-B4AD-89B9EF84DD12.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/melindaozel.com\/wp-content\/uploads\/2020\/04\/DA7A6E86-16C6-4B5E-B4AD-89B9EF84DD12.jpg?zoom=2&amp;resize=150%2C150&amp;ssl=1 300w, https:\/\/i0.wp.com\/melindaozel.com\/wp-content\/uploads\/2020\/04\/DA7A6E86-16C6-4B5E-B4AD-89B9EF84DD12.jpg?zoom=3&amp;resize=150%2C150&amp;ssl=1 450w\" sizes=\"(max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a 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landscape'>\n\t\t\t\t<a href='https:\/\/melindaozel.com\/it\/bypassing-vr-headset-occlusion-in-face-tracking\/8a0ec850-7579-4cfb-a2a9-af86bb491395\/#main'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/i0.wp.com\/melindaozel.com\/wp-content\/uploads\/2020\/04\/8A0EC850-7579-4CFB-A2A9-AF86BB491395.jpg?resize=150%2C150&amp;ssl=1\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/melindaozel.com\/wp-content\/uploads\/2020\/04\/8A0EC850-7579-4CFB-A2A9-AF86BB491395.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/melindaozel.com\/wp-content\/uploads\/2020\/04\/8A0EC850-7579-4CFB-A2A9-AF86BB491395.jpg?zoom=2&amp;resize=150%2C150&amp;ssl=1 300w, https:\/\/i0.wp.com\/melindaozel.com\/wp-content\/uploads\/2020\/04\/8A0EC850-7579-4CFB-A2A9-AF86BB491395.jpg?zoom=3&amp;resize=150%2C150&amp;ssl=1 450w\" sizes=\"(max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/div><\/figure>\n\t\t<\/div>\n<\/p><p><span style=\"font-weight: 300;\">Durante i miei anni di lavoro nel campo del face tracking, ho osservato una superstizione tra gli ingegneri e i ricercatori che non \u00e8 possibile tracciare i punti di riferimento del viso (caratteristiche come le sopracciglia, gli occhi e la bocca) quando cadono fuori dalla vista della telecamera. Questa credenza non \u00e8 del tutto vera. Non c'\u00e8 bisogno di vedere un sopracciglio per sapere se si sta alzando o increspando, e non c'\u00e8 bisogno di vedere il naso per sapere quando si sta corrugando.<\/span><\/p><p><span style=\"font-weight: 300;\">I nostri volti si gonfiano, si allungano e si raggrinziscono in modo unico ad ogni azione facciale. Ho usato queste modifiche per addestrare le etichettatrici a riconoscere e classificare con precisione le espressioni discrete solo in base al movimento della pelle. Con una documentazione ben indirizzata, una serie completa di esempi e una fotocamera di alta qualit\u00e0, \u00e8 possibile estrapolare i limiti delle informazioni con un FOV limitato.<\/span><\/p><p><span style=\"font-weight: 300;\">Il FOV minimo richiesto per il tracciamento oculare \u00e8 spesso sufficiente per tracciare una manciata di azioni. La vista A (nell'immagine qui sotto) \u00e8 la pi\u00f9 riflettente di come pu\u00f2 apparire la vista di un inseguitore basato sullo sguardo. Anche se l'obiettivo principale delle telecamere eye tracking \u00e8 quello di coprire una parte dell'occhio sufficiente per osservare i cambiamenti di sguardo, il suo potenziale \u00e8 molto maggiore. Anche con questa vista concentrata, \u00e8 comunque possibile rilevare <\/span><i><span style=\"font-weight: 300;\">alza coperchio superiore <\/span><\/i><span style=\"font-weight: 300;\">(AU5), <\/span><i><span style=\"font-weight: 300;\">guancia alzata <\/span><\/i><span style=\"font-weight: 300;\">(AU6), e <\/span><i><span style=\"font-weight: 300;\">Serracappuccio<\/span><\/i><span style=\"font-weight: 300;\"> (AU7) con un grado di certezza relativamente alto. Queste azioni sono utili per le loro applicazioni nella misurazione dell'attenzione, delle reazioni e dell'impegno; sono anche segnali cruciali nella comunicazione.<\/span><\/p><p><span style=\"font-weight: 300;\">Molte persone vengono bloccate da nomi di unit\u00e0 d'azione come <\/span><i><span style=\"font-weight: 300;\">guancia alzata <\/span><\/i><span style=\"font-weight: 300;\">e supporre: \"Non possiamo rintracciare <\/span><i><span style=\"font-weight: 300;\">guancia alzata <\/span><\/i><span style=\"font-weight: 300;\">perch\u00e9 il nostro FOV non copre la zona delle guance\". Ma <\/span><i><span style=\"font-weight: 300;\">guancia alzata <\/span><\/i><span style=\"font-weight: 300;\">\u00e8 pi\u00f9 di quanto riveli il suo nome; \u00e8 un'azione causata dalla contrazione dell'orbicularis oculi, un muscolo che circonda la zona degli occhi. Mentre i movimenti dell'orbicularis oculi hanno un impatto sulle guance, molti cambiamenti avvengono in realt\u00e0 nella zona dell'orbita. Finch\u00e9 si ha una visione marginale degli angoli degli occhi o un frammento di pelle sotto la palpebra inferiore, \u00e8 possibile determinare se <\/span><i><span style=\"font-weight: 300;\">guancia alzata<\/span><\/i><span style=\"font-weight: 300;\"> si sta verificando. Concetti simili valgono anche per le altre azioni che ho elencato nelle immagini qui sotto.\u00a0<\/span><\/p><h2><span style=\"font-weight: 500;\">Capacit\u00e0 con diversi FOV<\/span><\/h2><p><span style=\"font-weight: 400;\">Questo grafico mostra quali unit\u00e0 di azione (AU) \u00e8 possibile rilevare con vari campi di vista. <\/span><span style=\"font-weight: 300;\">Tenete a mente che questa \u00e8 una ripartizione abbreviata di ci\u00f2 che pu\u00f2 o non pu\u00f2 essere possibile con diversi FOV (se volete conoscere le previsioni per le forme inferiori del viso e le combinazioni), <span style=\"color: #7b5182;\"><a style=\"color: #7b5182;\" href=\"https:\/\/melindaozel.com\/services\/\">Sono disponibile per la consultazione<\/a>.<\/span>) Le condizioni cambieranno in base a fattori aggiuntivi come l'angolo della telecamera e il modo in cui le cuffie si appoggiano sul viso. (Le cuffie sono pesanti? Come influiscono il suo peso e la sua pressione sulle varie aree del viso?)\u00a0<\/span><\/p><p><span style=\"font-weight: 300;\">Se state lavorando al face-tracking in cuffia, non lasciate che le supposizioni limitino il vostro potenziale. Il volto \u00e8 complicato e pieno di indizi. Tutto quello che dovete fare \u00e8 trovare gli indizi giusti, e potete fare molto da poco.\u00a0<\/span><b style=\"color: #000000; font-family: 'Helvetica Neue'; font-size: 20px; background-color: var(--base-3);\"><div class=\"mepr_error\"><p>Il contenuto rimanente \u00e8 per <a href=\"https:\/\/melindaozel.com\/subscription-options\/\" target=\"_blank\" rel=\"noopener\">Membri Premium<\/a> solo. Se siete membri, <a href=\"https:\/\/melindaozel.com\/login\/\" target=\"_blank\" rel=\"noopener\">Accedi<\/a> e tornare a questa pagina :)!<\/p>\n<\/div><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>La capacit\u00e0 della VR di migliorare la presenza a distanza pu\u00f2 essere pi\u00f9 importante ora che mai, date le nuove restrizioni sociali dovute alla nostra attuale pandemia.<\/p>","protected":false},"author":60486633,"featured_media":2329,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[676756913,676756994,676757036,676757039,676757037,676756915,676757009,676756993],"tags":[],"class_list":["post-2317","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-action-units","category-ar-vr","category-au6","category-au7","category-cheek-raiser","category-facial-expressions","category-paid","category-tech","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Bypassing VR Headset Occlusion in Face Tracking - Face the FACS | Facial Expressions in Animation, AI, &amp; 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