{"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\/fr\/bypassing-vr-headset-occlusion-in-face-tracking\/","title":{"rendered":"Contournement de l'occlusion du casque VR dans le suivi des visages"},"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;\">Suivi de ce que vous ne pouvez pas voir<\/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\/fr\/bypassing-vr-headset-occlusion-in-face-tracking\/f3890bc6-9e9d-4b37-9b06-22ad9a97eaaf\/#main'><img decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/i0.wp.com\/melindaozel.com\/wp-content\/uploads\/2020\/04\/F3890BC6-9E9D-4B37-9B06-22AD9A97EAAF.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\/F3890BC6-9E9D-4B37-9B06-22AD9A97EAAF.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/melindaozel.com\/wp-content\/uploads\/2020\/04\/F3890BC6-9E9D-4B37-9B06-22AD9A97EAAF.jpg?zoom=2&amp;resize=150%2C150&amp;ssl=1 300w, https:\/\/i0.wp.com\/melindaozel.com\/wp-content\/uploads\/2020\/04\/F3890BC6-9E9D-4B37-9B06-22AD9A97EAAF.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 href='https:\/\/melindaozel.com\/fr\/bypassing-vr-headset-occlusion-in-face-tracking\/da7a6e86-16c6-4b5e-b4ad-89b9ef84dd12\/#main'><img 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 href='https:\/\/melindaozel.com\/fr\/bypassing-vr-headset-occlusion-in-face-tracking\/efd31615-cbfa-48e4-b548-439f0983198b\/#main'><img decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/i0.wp.com\/melindaozel.com\/wp-content\/uploads\/2020\/04\/EFD31615-CBFA-48E4-B548-439F0983198B.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\/EFD31615-CBFA-48E4-B548-439F0983198B.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/melindaozel.com\/wp-content\/uploads\/2020\/04\/EFD31615-CBFA-48E4-B548-439F0983198B.jpg?zoom=2&amp;resize=150%2C150&amp;ssl=1 300w, https:\/\/i0.wp.com\/melindaozel.com\/wp-content\/uploads\/2020\/04\/EFD31615-CBFA-48E4-B548-439F0983198B.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 href='https:\/\/melindaozel.com\/fr\/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;\">Au cours de mes ann\u00e9es de travail dans le domaine du suivi des visages, j'ai observ\u00e9 une superstition parmi les ing\u00e9nieurs et les chercheurs selon laquelle il est impossible de suivre les points de rep\u00e8re du visage (caract\u00e9ristiques telles que les sourcils, les yeux et la bouche) lorsqu'ils se trouvent en dehors de la vue de la cam\u00e9ra. Cette croyance n'est pas enti\u00e8rement vraie. Il n'est pas n\u00e9cessaire de voir un sourcil pour savoir s'il se l\u00e8ve ou se plisse, et il n'est pas n\u00e9cessaire de voir le nez pour savoir s'il se plisse.<\/span><\/p><p><span style=\"font-weight: 300;\">Nos visages se gonflent, s'\u00e9tirent et se froissent de fa\u00e7on unique \u00e0 chaque action sur le visage. J'ai utilis\u00e9 ces changements pour former les \u00e9tiqueteurs \u00e0 reconna\u00eetre et \u00e0 classer avec pr\u00e9cision les expressions discr\u00e8tes \u00e0 partir du seul mouvement de la peau. Avec une documentation bien dirig\u00e9e, un ensemble complet d'exemples et un appareil photo de haute qualit\u00e9, vous pouvez extrapoler des limites d'information avec une VFO limit\u00e9e.<\/span><\/p><p><span style=\"font-weight: 300;\">La valeur minimale requise pour le suivi visuel est souvent suffisante pour suivre une poign\u00e9e d'actions. La vue A (dans l'image ci-dessous) refl\u00e8te le mieux ce \u00e0 quoi peut ressembler une vue de suivi du regard. Bien que l'objectif principal des cam\u00e9ras de suivi du regard soit de couvrir juste assez l'\u0153il pour observer les changements de regard, son potentiel est bien plus important. M\u00eame avec cette vue concentr\u00e9e, vous pouvez toujours d\u00e9tecter <\/span><i><span style=\"font-weight: 300;\">l\u00e8ve paupi\u00e8re sup\u00e9rieure <\/span><\/i><span style=\"font-weight: 300;\">(AU5), <\/span><i><span style=\"font-weight: 300;\">lever de joues <\/span><\/i><span style=\"font-weight: 300;\">(AU6), et <\/span><i><span style=\"font-weight: 300;\">tendeur de couvercle<\/span><\/i><span style=\"font-weight: 300;\"> (AU7) avec un degr\u00e9 de certitude relativement \u00e9lev\u00e9. Ces actions sont utiles pour leurs applications dans la mesure de l'attention, des r\u00e9actions et de l'engagement ; elles constituent \u00e9galement des signaux cruciaux dans la communication.<\/span><\/p><p><span style=\"font-weight: 300;\">De nombreuses personnes sont bloqu\u00e9es par des noms d'unit\u00e9s d'action comme <\/span><i><span style=\"font-weight: 300;\">lever de joues <\/span><\/i><span style=\"font-weight: 300;\">et supposer que \"nous ne pouvons pas suivre <\/span><i><span style=\"font-weight: 300;\">lever de joues <\/span><\/i><span style=\"font-weight: 300;\">parce que notre FOV ne couvre pas la zone des joues\". Mais <\/span><i><span style=\"font-weight: 300;\">lever de joues <\/span><\/i><span style=\"font-weight: 300;\">est plus que ce que son nom r\u00e9v\u00e8le ; il s'agit d'une action provoqu\u00e9e par la contraction de l'orbicularis oculi, un muscle qui entoure la zone des yeux. Si les mouvements de l'orbicularis oculi ont un impact sur les joues, de nombreux changements se produisent en r\u00e9alit\u00e9 dans la zone de l'orbite. Tant que vous avez une vue marginale des coins des yeux ou un morceau de peau sous la paupi\u00e8re inf\u00e9rieure, vous pouvez d\u00e9terminer si oui ou non <\/span><i><span style=\"font-weight: 300;\">lever de joues<\/span><\/i><span style=\"font-weight: 300;\"> se produit. Des concepts similaires s'appliquent aux autres actions que j'ai \u00e9num\u00e9r\u00e9es dans les images ci-dessous.\u00a0<\/span><\/p><h2><span style=\"font-weight: 500;\">Capacit\u00e9s avec diff\u00e9rents FOV<\/span><\/h2><p><span style=\"font-weight: 400;\">Ce graphique montre les unit\u00e9s d'action (UA) qu'il est possible de d\u00e9tecter avec diff\u00e9rents champs de vision. <\/span><span style=\"font-weight: 300;\">Gardez \u00e0 l'esprit qu'il s'agit d'une analyse abr\u00e9g\u00e9e de ce qui peut ou ne peut pas \u00eatre possible avec diff\u00e9rents FOV (si vous souhaitez en savoir plus sur les pr\u00e9dictions pour les formes de visage et de combinaison inf\u00e9rieures), <span style=\"color: #7b5182;\"><a style=\"color: #7b5182;\" href=\"https:\/\/melindaozel.com\/services\/\">Je suis disponible pour des consultations<\/a>.<\/span>) Les conditions changeront en fonction de facteurs suppl\u00e9mentaires tels que l'angle de la cam\u00e9ra et la fa\u00e7on dont le casque repose sur le visage. (L'oreillette est-elle lourde ? Comment son poids et sa pression affectent-ils les diff\u00e9rentes zones du visage).\u00a0<\/span><\/p><p><span style=\"font-weight: 300;\">Si vous travaillez sur le suivi des visages dans les casques, ne laissez pas les hypoth\u00e8ses limiter votre potentiel. Le visage est compliqu\u00e9 et plein d'indices. Il vous suffit de trouver les bons indices, et vous pouvez accomplir beaucoup \u00e0 partir de peu.\u00a0<\/span><b style=\"color: #000000; font-family: 'Helvetica Neue'; font-size: 20px; background-color: var(--base-3);\"><div class=\"mepr_error\"><p>Le reste du contenu est destin\u00e9 \u00e0 <a href=\"https:\/\/melindaozel.com\/subscription-options\/\" target=\"_blank\" rel=\"noopener\">Membres Premium<\/a> seulement. Si vous \u00eates membre, <a href=\"https:\/\/melindaozel.com\/login\/\" target=\"_blank\" rel=\"noopener\">s'identifier<\/a> et revenir \u00e0 cette page :) !<\/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\u00e9 de la RV \u00e0 renforcer la pr\u00e9sence \u00e0 distance pourrait \u00eatre plus importante que jamais compte tenu des nouvelles restrictions sociales d\u00e9coulant de notre pand\u00e9mie actuelle.<\/p>","protected":false},"author":60486633,"featured_media":2329,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"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 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