{"id":85284,"date":"2020-06-14T19:42:01","date_gmt":"2020-06-14T17:42:01","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/pifu-sistema-mashinnogo-obucheniya-dlya-postroeniya-3d-modeli-cheloveka-na-osnove-2d-snimkov"},"modified":"2020-06-14T19:42:01","modified_gmt":"2020-06-14T17:42:01","slug":"pifu-sistema-mashinnogo-obucheniya-dlya-postroeniya-3d-modeli-cheloveka-na-osnove-2d-snimkov","status":"publish","type":"post","link":"https:\/\/prohoster.info\/de\/blog\/news\/pifu-sistema-mashinnogo-obucheniya-dlya-postroeniya-3d-modeli-cheloveka-na-osnove-2d-snimkov","title":{"rendered":"PIFu \u2014 ein System des maschinellen Lernens zur Erstellung eines 3D-Modells eines Menschen basierend auf 2D-Bildern","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Eine Gruppe von Forschern aus mehreren amerikanischen Universit\u00e4ten hat ein Projekt ver\u00f6ffentlicht <noindex><a rel=\"nofollow\" href=\"https:\/\/shunsukesaito.github.io\/PIFu\/\">PIFu<\/a><\/noindex> (Pixel-Aligned Implicit Function), das es erm\u00f6glicht, Methoden des maschinellen Lernens zur Erstellung eines 3D-Modells einer Person aus einem oder mehreren zweidimensionalen Bildern anzuwenden. Das System erm\u00f6glicht die Rekonstruktion komplizierter Bekleidungsvarianten wie Faltenr\u00f6cke und High Heels sowie verschiedener Frisuren, indem es selbstst\u00e4ndig Texturen und Formen in Bereichen wiederherstellt, die in der Projektion, aus der das 3D-Modell erstellt wird, unsichtbar sind. Zur Verbesserung der Qualit\u00e4t und Detailgenauigkeit des endg\u00fcltigen 3D-Modells k\u00f6nnen mehrere Bilder aus verschiedenen Perspektiven verwendet werden. Der Code des Projekts ist in Python mit dem Framework PyTorch geschrieben und <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/shunsukesaito\/PIFu\">wird verbreitet<\/a><\/noindex> unterliegt der MIT-Lizenz.<\/p>\n<p><center><noindex><a rel=\"nofollow\" href=\"https:\/\/camo.githubusercontent.com\/ee8acc83725679402962ce2bd895b0df21101cb7\/68747470733a2f2f7368756e73756b65736169746f2e6769746875622e696f2f504946752f7265736f75726365732f696d616765732f7465617365722e706e67\"><img decoding=\"async\" alt=\"PIFu ist ein maschinelles Lernsystem zur Erstellung eines 3D-Modells einer Person auf der Grundlage von 2D-Aufnahmen\" src=\"\/wp-content\/uploads\/2020\/06\/3ecd5a645f696cfb3513ca7ab004ee0b.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><\/p>\n<p>F\u00fcr die Rekonstruktion des volumetrischen Modells wird ein neuronales Netzwerk verwendet, das die wahrscheinlichste Form ausw\u00e4hlt und versteckte Elemente basierend auf einem Modell erg\u00e4nzt, das auf verschiedenen Varianten existierender Objekte trainiert wurde. Parallel dazu bietet das Projekt einen Algorithmus zur Zuordnung des erhaltenen volumetrischen Modells zu den Texturen der bereitgestellten zweidimensionalen Bilder, der die Pixel des 2D-Bildes gem\u00e4\u00df ihrer Position auf dem 3D-Objekt angleicht und die wahrscheinlichsten fehlenden Texturen generiert. Zur Kodierung des Bildes kann jede <noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/%D0%A1%D0%B2%D1%91%D1%80%D1%82%D0%BE%D1%87%D0%BD%D0%B0%D1%8F_%D0%BD%D0%B5%D0%B9%D1%80%D0%BE%D0%BD%D0%BD%D0%B0%D1%8F_%D1%81%D0%B5%D1%82%D1%8C\">konvolutionale neuronale Netzwerk<\/a><\/noindex>, f\u00fcr<br \/>\nF\u00fcr die Oberfl\u00e4chenrekonstruktion wurde die Architektur \u201e<noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/princeton-vl\/pose-hg-demo\">Stacked hourglass<\/a><\/noindex>\u201e, und<br \/>\n zur Zuordnung der Texturen wurde ein neuronales Netzwerk auf der Basis der Architektur <noindex><a rel=\"nofollow\" href=\"https:\/\/junyanz.github.io\/CycleGAN\/\">CycleGAN<\/a><\/noindex>.<\/p>\n<p><center><noindex><a rel=\"nofollow\" href=\"https:\/\/shunsukesaito.github.io\/PIFu\/resources\/images\/overview.png\"><img decoding=\"async\" alt=\"PIFu ist ein maschinelles Lernsystem zur Erstellung eines 3D-Modells einer Person auf der Grundlage von 2D-Aufnahmen\" src=\"\/wp-content\/uploads\/2020\/06\/c927107e79304e71f00fd75a81c40e23.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><\/p>\n<p>Das von den Forschern verwendete fertige, trainierte Modell <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/shunsukesaito\/PIFu\/blob\/master\/scripts\/download_trained_model.sh\">ist verf\u00fcgbar<\/a><\/noindex> ist frei verf\u00fcgbar, aber die Trainingsdaten, auf denen das Training basierte, bleiben geschlossen, da sie auf den Ergebnissen kommerzieller 3D-Scans basieren. Als Quelle f\u00fcr das eigenst\u00e4ndige Training des Modells kann eine <noindex><a rel=\"nofollow\" href=\"https:\/\/renderpeople.com\/free-3d-people\/\">Datenbank von 3D-Modellen<\/a><\/noindex> von Menschen aus dem Projekt Renderpeople verwendet werden.<\/p>\n<p><center><div class=\"youtube-placeholder\" data-id=\"S1FpjwKqtPs\" onclick=\"loadVideo(this)\">\r\n        <img decoding=\"async\" src=\"https:\/\/img.youtube.com\/vi\/S1FpjwKqtPs\/hqdefault.jpg\" alt=\"Video abspielen\" loading=\"lazy\" width=\"480\" height=\"360\" style=\"width:100%;height:auto;\">\r\n        <div class=\"play-button\"><\/div>\r\n    <\/div><\/center><\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Quelle: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53152\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0413\u0440\u0443\u043f\u043f\u0430 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439 \u0438\u0437 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u0438\u0445 \u0430\u043c\u0435\u0440\u0438\u043a\u0430\u043d\u0441\u043a\u0438\u0445 \u0443\u043d\u0438\u0432\u0435\u0440\u0441\u0438\u0442\u0435\u0442\u043e\u0432 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0430 \u043f\u0440\u043e\u0435\u043a\u0442 PIFu (Pixel-Aligned Implicit Function), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0439 \u043f\u0440\u0438\u043c\u0435\u043d\u0438\u0442\u044c \u043c\u0435\u0442\u043e\u0434\u044b \u043c\u0430\u0448\u0438\u043d\u043d\u043e\u0433\u043e \u043e\u0431\u0443\u0447\u0435\u043d\u0438\u044f \u0434\u043b\u044f \u043f\u043e\u0441\u0442\u0440\u043e\u0435\u043d\u0438\u044f 3D-\u043c\u043e\u0434\u0435\u043b\u0438 \u0447\u0435\u043b\u043e\u0432\u0435\u043a\u0430 \u043f\u043e \u043e\u0434\u043d\u043e\u043c\u0443 \u0438\u043b\u0438 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u0438\u043c \u0434\u0432\u0443\u043c\u0435\u0440\u043d\u044b\u043c \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u044f\u043c. \u0421\u0438\u0441\u0442\u0435\u043c\u0430 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0432\u043e\u0441\u0441\u043e\u0437\u0434\u0430\u0432\u0430\u0442\u044c \u0441\u043b\u043e\u0436\u043d\u044b\u0435 \u0432\u0430\u0440\u0438\u0430\u043d\u0442\u044b \u043e\u0434\u0435\u0436\u0434\u044b, \u0442\u0430\u043a\u0438\u0435 \u043a\u0430\u043a \u044e\u0431\u043a\u0438 \u0441\u043e \u0441\u043a\u043b\u0430\u0434\u043a\u0430\u043c\u0438 \u0438 \u0442\u0443\u0444\u043b\u0438 \u043d\u0430 \u043a\u0430\u0431\u043b\u0443\u043a\u0430\u0445, \u0438 \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0435 \u043f\u0440\u0438\u0447\u0451\u0441\u043a\u0438, \u0441\u0430\u043c\u043e\u0441\u0442\u043e\u044f\u0442\u0435\u043b\u044c\u043d\u043e \u0432\u043e\u0441\u0441\u0442\u0430\u043d\u0430\u0432\u043b\u0438\u0432\u0430\u044f \u0442\u0435\u043a\u0441\u0442\u0443\u0440\u0443 \u0438 \u0444\u043e\u0440\u043c\u0443 \u0432 \u043e\u0431\u043b\u0430\u0441\u0442\u044f\u0445, \u043d\u0435\u0432\u0438\u0434\u0438\u043c\u044b\u0445 \u0432 \u043f\u0440\u043e\u0435\u043a\u0446\u0438\u0438, [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":85285,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-85284","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0413\u0440\u0443\u043f\u043f\u0430 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439 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