{"id":101605,"date":"2021-10-12T16:22:58","date_gmt":"2021-10-12T14:23:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/nvidia-otkryla-kod-stylegan3-sistemy-mashinnogo-obucheniya-dlya-sinteza-licz"},"modified":"2021-10-12T16:22:58","modified_gmt":"2021-10-12T14:23:00","slug":"nvidia-otkryla-kod-stylegan3-sistemy-mashinnogo-obucheniya-dlya-sinteza-licz","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/novosti-interneta\/nvidia-otkryla-kod-stylegan3-sistemy-mashinnogo-obucheniya-dlya-sinteza-licz","title":{"rendered":"NVIDIA ha aperto il codice di StyleGAN3, un sistema di apprendimento automatico per la sintesi di volti.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>L'azienda NVIDIA ha rilasciato i codici sorgente di StyleGAN3, un sistema di machine learning basato su una rete neurale generativa antagonista (GAN) progettato per sintetizzare immagini realistiche di volti umani. Il codice \u00e8 scritto in Python utilizzando il framework PyTorch ed \u00e8 distribuito con la licenza NVIDIA Source Code License, che impone restrizioni sul suo utilizzo a scopi commerciali.      <\/p>\n<p>\u0414\u043b\u044f \u0437\u0430\u0433\u0440\u0443\u0437\u043a\u0438 \u0442\u0430\u043a\u0436\u0435 \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u044b \u0433\u043e\u0442\u043e\u0432\u044b\u0435 \u043d\u0430\u0442\u0440\u0435\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0435 \u043c\u043e\u0434\u0435\u043b\u0438, \u043e\u0431\u0443\u0447\u0435\u043d\u043d\u044b\u0435 \u043d\u0430 \u043a\u043e\u043b\u043b\u0435\u043a\u0446\u0438\u0438 Flickr-Faces-HQ (FFHQ), \u0432\u043a\u043b\u044e\u0447\u0430\u044e\u0449\u0435\u0439 70 \u0442\u044b\u0441\u044f\u0447 \u0432\u044b\u0441\u043e\u043a\u043e\u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0445 (1024&#215;1024) PNG-\u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u0439 \u043b\u0438\u0446 \u043b\u044e\u0434\u0435\u0439.  \u041a\u0440\u043e\u043c\u0435 \u0442\u043e\u0433\u043e \u0438\u043c\u0435\u044e\u0442\u0441\u044f \u043c\u043e\u0434\u0435\u043b\u0438, \u043f\u043e\u0441\u0442\u0440\u043e\u0435\u043d\u043d\u044b\u0435 \u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u0435 \u043a\u043e\u043b\u043b\u0435\u043a\u0446\u0438\u0439 AFHQv2 (\u0444\u043e\u0442\u043e\u0433\u0440\u0430\u0444\u0438\u0438 \u043c\u043e\u0440\u0434 \u0436\u0438\u0432\u043e\u0442\u043d\u044b\u0445) \u0438 Metfaces (\u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u044f \u043b\u0438\u0446 \u043b\u044e\u0434\u0435\u0439 \u0441 \u043f\u043e\u0440\u0442\u0440\u0435\u0442\u043e\u0432 \u043a\u043b\u0430\u0441\u0441\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u0436\u0438\u0432\u043e\u043f\u0438\u0441\u0438). \u041f\u0440\u0438 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u0430\u043a\u0446\u0435\u043d\u0442 \u0434\u0435\u043b\u0430\u0435\u0442\u0441\u044f \u043d\u0430 \u043b\u0438\u0446\u0430, \u043d\u043e \u0441\u0438\u0441\u0442\u0435\u043c\u0430 \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u043e\u0431\u0443\u0447\u0435\u043d\u0430 \u0434\u043b\u044f \u0433\u0435\u043d\u0435\u0440\u0430\u0446\u0438\u0438 \u043b\u044e\u0431\u044b\u0445 \u043e\u0431\u044a\u0435\u043a\u0442\u043e\u0432, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u043f\u0435\u0439\u0437\u0430\u0436\u0435\u0439 \u0438 \u0430\u0432\u0442\u043e\u043c\u043e\u0431\u0438\u043b\u0435\u0439. \u0414\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0442\u0441\u044f \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u044b \u0434\u043b\u044f \u0441\u0430\u043c\u043e\u0441\u0442\u043e\u044f\u0442\u0435\u043b\u044c\u043d\u043e\u0433\u043e \u043e\u0431\u0443\u0447\u0435\u043d\u0438\u044f \u043d\u0435\u0439\u0440\u043e\u043d\u043d\u043e\u0439 \u0441\u0435\u0442\u0438 \u043f\u043e \u0441\u043e\u0431\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u043c \u043a\u043e\u043b\u043b\u0435\u043a\u0446\u0438\u044f\u043c \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u0439. \u0414\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u0442\u0440\u0435\u0431\u0443\u0435\u0442\u0441\u044f \u043e\u0434\u043d\u0430 \u0438\u043b\u0438 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u0432\u0438\u0434\u0435\u043e\u043a\u0430\u0440\u0442 NVIDIA (\u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0443\u0435\u0442\u0441\u044f GPU Tesla V100 \u0438\u043b\u0438 A100), \u043a\u0430\u043a \u043c\u0438\u043d\u0438\u043c\u0443\u043c 12 \u0413\u0411 \u041e\u0417\u0423, PyTorch 1.9 \u0438 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u0439 CUDA 11.1+. \u0414\u043b\u044f \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u044f \u0438\u0441\u043a\u0443\u0441\u0441\u0442\u0432\u0435\u043d\u043d\u043e\u0433\u043e \u0445\u0430\u0440\u0430\u043a\u0442\u0435\u0440\u0430 \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u043d\u044b\u0445 \u043b\u0438\u0446 \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u0442\u0441\u044f \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u044b\u0439 \u0434\u0435\u0442\u0435\u043a\u0442\u043e\u0440.        <\/p>\n<p>Il sistema consente di sintetizzare l'immagine di un nuovo volto basandosi sull'interpolazione delle caratteristiche di pi\u00f9 volti, combinando tratti distintivi e adattando l'immagine finale all'et\u00e0, al sesso, alla lunghezza dei capelli, al tipo di sorriso, alla forma del naso, al colore della pelle, agli occhiali e all'angolazione della fotografia desiderati. Il generatore considera l'immagine come una collezione di stili, separando automaticamente i dettagli caratteristici (freckles, capelli, occhiali) dagli attributi generali ad alto livello (posizione, sesso, cambiamenti legati all'et\u00e0) e consente di combinarli in modo arbitrario definendo le propriet\u00e0 dominanti tramite coefficienti di peso. Di conseguenza, vengono generate immagini indistinguibili da vere fotografie.     <center><img decoding=\"async\" alt=\"NVIDIA ha aperto il codice di StyleGAN3, un sistema di apprendimento automatico per la sintesi di volti.\" src=\"\/wp-content\/uploads\/2021\/10\/94ecac7b420fcd6b3d164134b830e147.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/center>      <\/p>\n<p>La prima versione della tecnologia StyleGAN \u00e8 stata pubblicata nel 2019, seguita nel 2020 da una versione migliorata, StyleGAN2, che offre una qualit\u00e0 delle immagini superiore e riduce alcuni artefatti. Tuttavia, il sistema rimaneva statico, ovvero non consentiva di ottenere animazioni e movimenti del volto realistici. Con lo sviluppo di StyleGAN3, l'obiettivo principale \u00e8 stata l'adattamento della tecnologia per applicazioni in animazione e video.    <\/p>\n<p>StyleGAN3 utilizza un'architettura di generazione delle immagini rivisitata, priva di aliasing, e propone nuovi scenari di addestramento per la rete neurale. Sono state integrate nuove utilit\u00e0 per la visualizzazione interattiva (visualizer.py), l'analisi (avg_spectra.py) e la generazione di video (gen_video.py). Inoltre, sono stati ridotti i consumi di memoria e accelerato il processo di addestramento.      <center><img decoding=\"async\" alt=\"NVIDIA ha aperto il codice di StyleGAN3, un sistema di apprendimento automatico per la sintesi di volti.\" src=\"\/wp-content\/uploads\/2021\/10\/e8a68abee5a637f9be1b9ca79652e043.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/center>    <\/p>\n<p>Una delle caratteristiche fondamentali dell'architettura StyleGAN3 \u00e8 stata la transizione verso l'interpretazione di tutti i segnali nella rete neurale come processi continui. Questo ha permesso di manipolare le posizioni relative durante la formazione dei dettagli, ancorate non alle coordinate assolute dei singoli pixel nell'immagine, ma alla superficie degli oggetti rappresentati. In StyleGAN e StyleGAN2, l'ancoraggio ai pixel durante la generazione portava a problemi nella visualizzazione dinamica; ad esempio, durante il movimento dell'immagine si osservava la disallineamento di piccoli dettagli, come rughe e capelli, che sembravano muoversi separatamente dal resto del volto. In StyleGAN3, questi problemi sono stati risolti e la tecnologia \u00e8 diventata pienamente adatta per la produzione di video.        <center>  <video controls=\"\" style=\"width: 640px; height: 480px; max-width:100%\"><source src=\"https:\/\/nvlabs-fi-cdn.nvidia.com\/stylegan3\/videos\/video_0_ffhq_cinemagraphs.mp4\" type=\"video\/mp4\"><\/video>  <\/center>  <center>  <video controls=\"\" style=\"width: 640px; height: 480px; max-width:100%\"><source src=\"https:\/\/nvlabs-fi-cdn.nvidia.com\/stylegan3\/videos\/video_1_ffhq_cinemagraphs.mp4\" type=\"video\/mp4\"><\/video>  <\/center>    <center>  <video controls=\"\" style=\"width: 640px; height: 480px; max-width:100%\"><source src=\"https:\/\/nvlabs-fi-cdn.nvidia.com\/stylegan3\/videos\/video_2_metfaces_interpolations.mp4\" type=\"video\/mp4\"><\/video>  <\/center>    <center>  <video controls=\"\" style=\"width: 640px; height: 480px; max-width:100%\"><source src=\"https:\/\/nvlabs-fi-cdn.nvidia.com\/stylegan3\/videos\/video_8_internal_activations.mp4\" type=\"video\/mp4\"><\/video>  <\/center>    <center>  <video controls=\"\" style=\"width: 640px; height: 480px; max-width:100%\"><source src=\"https:\/\/nvlabs-fi-cdn.nvidia.com\/stylegan3\/videos\/video_5_figure_3_left_equivariance_quality.mp4\" type=\"video\/mp4\"><\/video>  <\/center>      <\/p>\n<p>\u0414\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u043c\u043e\u0436\u043d\u043e \u043e\u0442\u043c\u0435\u0442\u0438\u0442\u044c \u0430\u043d\u043e\u043d\u0441 \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u044f\u043c\u0438 NVIDIA \u0438 Microsoft \u043a\u0440\u0443\u043f\u043d\u0435\u0439\u0448\u0435\u0439 \u044f\u0437\u044b\u043a\u043e\u0432\u043e\u0439 \u043c\u043e\u0434\u0435\u043b\u0438 MT-NLG \u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u0435  \u0433\u043b\u0443\u0431\u043e\u043a\u043e\u0439 \u043d\u0435\u0439\u0440\u043e\u043d\u043d\u043e\u0439 \u0441\u0435\u0442\u0438 \u0441 \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u043e\u0439  &#171;\u0442\u0440\u0430\u043d\u0441\u0444\u043e\u0440\u043c\u0435\u0440&#187;. \u041c\u043e\u0434\u0435\u043b\u044c \u043e\u0445\u0432\u0430\u0442\u044b\u0432\u0430\u0435\u0442 530 \u043c\u0438\u043b\u043b\u0438\u0430\u0440\u0434\u043e\u0432 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u043e\u0432, \u0430 \u0434\u043b\u044f \u043e\u0431\u0443\u0447\u0435\u043d\u0438\u044f \u0431\u044b\u043b \u0437\u0430\u0434\u0435\u0439\u0441\u0442\u0432\u043e\u0432\u0430\u043d \u043a\u043b\u0430\u0441\u0442\u0435\u0440, \u043d\u0430\u0441\u0447\u0438\u0442\u044b\u0432\u0430\u044e\u0449\u0438\u0439 4480 GPU (560 <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/it\/server\/\"   title=\"server\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"1612\">server<\/a> Il DGX A100 con 8 GPU A100 80GB ciascuna \u00e8 progettato per risolvere compiti di elaborazione del linguaggio naturale, come la previsione del completamento delle frasi, rispondere a domande, comprendere testi, generare output in linguaggio naturale e risolvere ambiguit\u00e0 nel significato delle parole.    <center><img decoding=\"async\" alt=\"NVIDIA ha aperto il codice di StyleGAN3, un sistema di apprendimento automatico per la sintesi di volti.\" src=\"\/wp-content\/uploads\/2021\/10\/bf51e995a3b53046c8fa048e4f6bfd12.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/center><br \/>\n<br \/>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=55952\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f NVIDIA \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0430 \u0438\u0441\u0445\u043e\u0434\u043d\u044b\u0435 \u0442\u0435\u043a\u0441\u0442\u044b StyleGAN3, \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u043c\u0430\u0448\u0438\u043d\u043d\u043e\u0433\u043e \u043e\u0431\u0443\u0447\u0435\u043d\u0438\u044f \u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u0435 \u0433\u0435\u043d\u0435\u0440\u0430\u0442\u0438\u0432\u043d\u043e-\u0441\u043e\u0441\u0442\u044f\u0437\u0430\u0442\u0435\u043b\u044c\u043d\u043e\u0439 \u043d\u0435\u0439\u0440\u043e\u043d\u043d\u043e\u0439 \u0441\u0435\u0442\u0438 (GAN), \u043d\u0430\u0446\u0435\u043b\u0435\u043d\u043d\u043e\u0439 \u043d\u0430 \u0441\u0438\u043d\u0442\u0435\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u0430\u043b\u0438\u0441\u0442\u0438\u0447\u043d\u044b\u0445 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u0439 \u043b\u0438\u0446 \u043b\u044e\u0434\u0435\u0439. \u041a\u043e\u0434 \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 Python c \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u043c \u0444\u0440\u0435\u0439\u043c\u0432\u043e\u0440\u043a\u0430 PyTorch \u0438 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 NVIDIA Source Code License, \u043d\u0430\u043a\u043b\u0430\u0434\u044b\u0432\u0430\u044e\u0449\u0435\u0439 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u0435 \u043d\u0430 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0432 \u043a\u043e\u043c\u043c\u0435\u0440\u0447\u0435\u0441\u043a\u0438\u0445 \u0446\u0435\u043b\u044f\u0445. \u0414\u043b\u044f \u0437\u0430\u0433\u0440\u0443\u0437\u043a\u0438 \u0442\u0430\u043a\u0436\u0435 \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u044b \u0433\u043e\u0442\u043e\u0432\u044b\u0435 \u043d\u0430\u0442\u0440\u0435\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0435 \u043c\u043e\u0434\u0435\u043b\u0438, \u043e\u0431\u0443\u0447\u0435\u043d\u043d\u044b\u0435 \u043d\u0430 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":101606,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-101605","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f NVIDIA \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0430 \u0438\u0441\u0445\u043e\u0434\u043d\u044b\u0435 \u0442\u0435\u043a\u0441\u0442\u044b StyleGAN3, \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u043c\u0430\u0448\u0438\u043d\u043d\u043e\u0433\u043e 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Il codice \u00e8 scritto in Python utilizzando il framework PyTorch e viene distribuito sotto la licenza NVIDIA Source Code License, che impone restrizioni all'uso commerciale. Sono disponibili anche modelli preaddestrati pronti per il download, addestrati su","canonical_url":"https:\/\/prohoster.info\/it\/blog\/novosti-interneta\/nvidia-otkryla-kod-stylegan3-sistemy-mashinnogo-obucheniya-dlya-sinteza-licz","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"it_IT","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47NVIDIA \u043e\u0442\u043a\u0440\u044b\u043b\u0430 \u043a\u043e\u0434 StyleGAN3, \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u043c\u0430\u0448\u0438\u043d\u043d\u043e\u0433\u043e \u043e\u0431\u0443\u0447\u0435\u043d\u0438\u044f \u0434\u043b\u044f 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