{"id":11,"date":"2022-08-08T15:24:43","date_gmt":"2022-08-08T13:24:43","guid":{"rendered":"https:\/\/enseignement-sta.fr\/?p=11"},"modified":"2023-08-17T08:19:32","modified_gmt":"2023-08-17T06:19:32","slug":"test-1","status":"publish","type":"post","link":"https:\/\/enseignement-sta.fr\/index.php\/2022\/08\/08\/test-1\/","title":{"rendered":"CM &#8211; S4 &#8211; CM2 &#8211; IMG SYNTH"},"content":{"rendered":"\n<p>a lire \n<a href=\"https:\/\/www.netcost-security.fr\/actualites\/105890\/path-tracing-vs-ray-tracing-explique\/\">https:\/\/www.netcost-security.fr\/actualites\/105890\/path-tracing-vs-ray-tracing-explique\/<\/a><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<ul class=\"wp-block-list\">\n<li><h4 id=\"lanc\u00e9-de-rayons\"><strong>Lanc\u00e9 de rayons<\/strong><\/h4>\n<ul class=\"wp-block-list\">\n<li><strong>Qu&#8217;est ce c&#8217;est ?<\/strong>\n<ul class=\"wp-block-list\">\n<li>principe du rebond des rayons de lumi\u00e8re sur la mati\u00e8re.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Notion d&#8217;\u00e9clairage &#8220;ambient&#8221; et calcul depuis la camera et depuis les sources ambiantes\n<ul class=\"wp-block-list\">\n<li>RAY tracing = Camera qui envoie des rayons .<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Le path tracing et le MTL -( image en calcul perp\u00e9tuel)\n<ul class=\"wp-block-list\">\n<li>le Mtl est actif quand le moteur trouve une diff\u00e9rence entre la lumi\u00e8re \u00e9mise pas la camera et la lumi\u00e8re \u00e9mise par les sources ext\u00e9rieures\n<ul class=\"wp-block-list\">\n<li>il a  pour but de solutionner cette diff\u00e9rence<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><p>unbiased<\/p>\n<ul class=\"wp-block-list\">\n<li>rendu non biais\u00e9s\n<ul class=\"wp-block-list\">\n<li>techniques in\u00e9rentes\n<ul class=\"wp-block-list\">\n<li>Le <a title=\"Path tracing\" href=\"https:\/\/fr.wikipedia.org\/wiki\/Path_tracing\">path tracing<\/a><\/li>\n\n\n\n<li>Le light tracing<\/li>\n\n\n\n<li>Le path tracing bidirectionnel\n  genere des solutions plausibles de rendus<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><p>biased <\/p><ul>\n<li>ne permet pas de gerer l&#8217;ensemble des param\u00e9tres lumineux &#8220;r\u00e9aliste&#8221; <\/li>\n<li>pas de caustic \n  genere des solutions plausibles de rendus<\/li>\n<\/ul><p>  <strong>Id\u00e9es Pr\u00e9con\u00e7ues :<\/strong> <\/p>\n<ul class=\"wp-block-list\">\n<li>unbiased = physiquement &#8220;juste&#8221;  = calcul lent<\/li>\n\n\n\n<li>biased = physiquement  &#8220;faux&#8221;  = Calcul rapide<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><p>Les moteurs &#8220;unbiased&#8221; utilisent certains calculs bias\u00e9s <\/p>\n<ul class=\"wp-block-list\">\n<li>rapidit\u00e9s<\/li>\n\n\n\n<li>technologie mixtes<\/li>\n\n\n\n<li>possibilit\u00e9es de biaser ou de debiaiser certain moteurs de rendu<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>![[Pasted image 20230328153632.png]]<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>Illustration illumination globale<\/strong><\/p>\n\n\n\n<p>![[Pasted image 20230328153613.png]]<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>![[1mtn74gw.bmp]]<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<ul class=\"wp-block-list\">\n<li><h5 id=\"lumi\u00e8res\">lumi\u00e8res<\/h5><p>  <strong>DEMO SUR MAISON<\/strong><\/p>\n<ul class=\"wp-block-list\">\n<li>les areas<\/li>\n\n\n\n<li>les spots<\/li>\n\n\n\n<li>le sun ( plus tard sur la scene narbo via )<\/li>\n\n\n\n<li>les ies <a href=\"https:\/\/ieslibrary.com\/en\/home\">https:\/\/ieslibrary.com\/en\/home<\/a><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><h5 id=\"param\u00e9tres-de-rendu\">Param\u00e9tres de Rendu<\/h5><p>   <strong>Cycles<\/strong>\n  &#8211; principe de format d&#8217;image et de pourcentage de rendu \n  &#8211; GPU COMPUTE = CPU + GPU \n      &#8211; rappel GPU ET CPU\n   <strong>Sampling<\/strong> <\/p>\n<ul class=\"wp-block-list\">\n<li>principe\n<ul class=\"wp-block-list\">\n<li>viewport <\/li>\n\n\n\n<li>render<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><p><strong>OPTIMISATION DE RENDU<\/strong>\n  <strong>Tiling<\/strong> <\/p><ul>\n<li>principes <\/li>\n<li>r\u00e9glages<\/li>\n<\/ul><p>  <strong>Simplify<\/strong><\/p>\n<ul class=\"wp-block-list\">\n<li>principe<\/li>\n\n\n\n<li>Final render\n<ul class=\"wp-block-list\">\n<li>persistant Data = mise en memoire des Maps<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>a lire https:\/\/www.netcost-security.fr\/actualites\/105890\/path-tracing-vs-ray-tracing-explique\/ ![[Pasted image 20230328153632.png]] Illustration illumination globale ![[Pasted image 20230328153613.png]] ![[1mtn74gw.bmp]]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[],"post_folder":[],"class_list":["post-11","post","type-post","status-publish","format-standard","hentry","category-non-classe","entry"],"_links":{"self":[{"href":"https:\/\/enseignement-sta.fr\/index.php\/wp-json\/wp\/v2\/posts\/11","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/enseignement-sta.fr\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/enseignement-sta.fr\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/enseignement-sta.fr\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/enseignement-sta.fr\/index.php\/wp-json\/wp\/v2\/comments?post=11"}],"version-history":[{"count":4,"href":"https:\/\/enseignement-sta.fr\/index.php\/wp-json\/wp\/v2\/posts\/11\/revisions"}],"predecessor-version":[{"id":949,"href":"https:\/\/enseignement-sta.fr\/index.php\/wp-json\/wp\/v2\/posts\/11\/revisions\/949"}],"wp:attachment":[{"href":"https:\/\/enseignement-sta.fr\/index.php\/wp-json\/wp\/v2\/media?parent=11"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/enseignement-sta.fr\/index.php\/wp-json\/wp\/v2\/categories?post=11"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/enseignement-sta.fr\/index.php\/wp-json\/wp\/v2\/tags?post=11"},{"taxonomy":"post_folder","embeddable":true,"href":"https:\/\/enseignement-sta.fr\/index.php\/wp-json\/wp\/v2\/post_folder?post=11"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}