{"id":8801,"date":"2017-04-24T19:00:47","date_gmt":"2017-04-24T17:00:47","guid":{"rendered":"http:\/\/agora.xtec.cat\/formacio\/zenit\/?p=8801"},"modified":"2023-02-15T09:31:18","modified_gmt":"2023-02-15T08:31:18","slug":"p06_ud01-3-titol","status":"publish","type":"post","link":"https:\/\/projectes.xtec.cat\/zenit\/general\/p06_ud01-3-titol\/","title":{"rendered":"1.1. Creant imatges estereosc\u00f2piques"},"content":{"rendered":"<div class=\"container\">\n<ul class=\"nav nav-tabs nav-pills\">\n<li class=\"nav-item\"><a class=\"nav-link active\" href=\"#consulta\" data-toggle=\"tab\">Consulta<\/a><\/li>\n<li class=\"nav-item\"><a class=\"nav-link\" href=\"#practica\" data-toggle=\"tab\">Practica<\/a><\/li>\n<\/ul>\n<p><!--\n \t\n\n<li class=\"nav-item\"><a class=\"nav-link\" href=\"#aplicacions\" data-toggle=\"tab\">Aplicacions<\/a><\/li>\n\n\n \t\n\n<li class=\"nav-item\"><a class=\"nav-link\" href=\"#recursos\" data-toggle=\"tab\">Recursos<\/a><\/li>\n\n\n--><\/p>\n<div class=\"tab-content\" style=\"margin-top: 20px;\">\n<div id=\"consulta\" class=\"tab-pane active\">\n<p>Les imatges estereosc\u00f2piques s&#8217;obtenen a partir de dues fotografies diferents d&#8217;un objecte o escenari, preses des de punts molt propers entre si. Per simular el comportament de la visi\u00f3 humana, s&#8217;escull una dist\u00e0ncia entre els 2 punts on es fa la foto entre 5 i 8 cent\u00edmetres (la dist\u00e0ncia que hi ha entre els ulls d&#8217;una persona).<\/p>\n<div>Per diferenciar les dues fotografies s&#8217;aplica un filtre diferent a cadascuna, de forma que els 2 filtres siguin complementaris. Aix\u00f2 es pot aconseguir de formes diverses :<\/div>\n<ul>\n<li>Amb fotos de perfil RGB i filtres de color, filtrant les components verda i blava en una foto i filtrant la component vermella de l&#8217;altra.<br \/>\n<a title=\"By Locafox.de [CC BY-SA 4.0 (https:\/\/creativecommons.org\/licenses\/by-sa\/4.0 )], via Wikimedia Commons\" href=\"https:\/\/commons.wikimedia.org\/wiki\/File:Active-3d-shutter-technology.gif\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/b\/bb\/Active-3d-shutter-technology.gif\" alt=\"Active-3d-shutter-technology\" width=\"299\" height=\"157\" \/><\/a><\/li>\n<li>Eliminant la polaritzaci\u00f3 vertical en un foto i la polaritzaci\u00f3 horitzontal de l&#8217;altra.<br \/>\n<a title=\"By Locafox.de [CC BY-SA 4.0 (https:\/\/creativecommons.org\/licenses\/by-sa\/4.0 )], from Wikimedia Commons\" href=\"https:\/\/commons.wikimedia.org\/wiki\/File:Passive-3d-tv-technology.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/4\/46\/Passive-3d-tv-technology.jpg\" alt=\"Passive-3d-tv-technology\" width=\"299\" height=\"157\" \/><\/a><\/li>\n<\/ul>\n<p>D&#8217;aquesta forma, mirant la imatge fusionada de les dues fotos mitjan\u00e7ant unes ulleres anagl\u00edfiques amb vidres especials (diferents en l&#8217;ull esquerre i l&#8217;ull dret) es pot observar una imatge 3D amb un cert efecte de profunditat.<\/p>\n<table style=\"border-collapse: collapse; width: 100%;\" border=\"0\">\n<tbody>\n<tr style=\"height: 270px;\">\n<td style=\"width: 50%; text-align: center; height: 270px;\"><a title=\"By German [Public domain], from Wikimedia Commons\" href=\"https:\/\/commons.wikimedia.org\/wiki\/File:Animacion_3b.gif\"><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/c\/c9\/Animacion_3b.gif\" alt=\"Animaci\u00f3 3D\" width=\"256\" \/><\/a>Les dues fotografies originals<\/td>\n<td style=\"width: 50%; height: 270px; text-align: center;\"><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/a\/a8\/Animacion_3b_anaglyphe.png\" alt=\"Animaci\u00f3 3D anagl\u00edfic\" width=\"256\" \/>L&#8217;anaglif fet amb les dues fotografies<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/e\/e7\/Anaglyph_glasses.png\" alt=\"Anaglyph glasses\" width=\"333\" height=\"212\" \/><\/p>\n<p style=\"text-align: center;\">Ulleres anagl\u00edfiques<\/p>\n<p><img decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/8\/8a\/SpiritsShadow-Sol153-6-8-2004.jpg\/512px-SpiritsShadow-Sol153-6-8-2004.jpg\" alt=\"SpiritsShadow-Sol153-6-8-2004\" width=\"512\" \/>Composici\u00f3 estereosc\u00f2pica amb perspectiva cil\u00edndrica a partir de fotografies fetes des de la <em>Mars Exploration Rover Spirit <\/em>de la NASA<\/p>\n<\/div>\n<div id=\"practica\" class=\"tab-pane fade\">\n<p>En aquesta pr\u00e0ctica et proposem obtenir una imatge anagl\u00edfica a partir de dues fotografies fetes amb un tel\u00e8fon m\u00f2bil i construir unes ulleres anagl\u00edfiques per a visualitzar-la.<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\n<li><strong>Imatge<\/strong> anagl\u00edfica : Segueix aquestes <a href=\"http:\/\/www.josephperez.es\/2010\/06\/fotos-3d-estereoscopicas-con-gimp\/\">instruccions<\/a>. Necessitar\u00e0s :\n<ul>\n<li>Un tel\u00e8fon m\u00f2bil o c\u00e0mera fotogr\u00e0fica<\/li>\n<li>L&#8217;editor d&#8217;imatges <a href=\"https:\/\/www.gimp.org\/\"><em>GIMP<\/em><\/a><\/li>\n<\/ul>\n<\/li>\n<li><strong>Ulleres<\/strong> anagl\u00edfiques : Segueix aquestes <a href=\"https:\/\/www.littlebrowniebakers.com\/media\/rally-download\/3d_glasses_activity_v3.pdf\">instruccions<\/a>. Necessitar\u00e0s :\n<ul>\n<li>La plantilla per a la montura de les ulleres<\/li>\n<li>Acetat o paper de cel\u00b7lofana vermell i cyan<\/li>\n<li>Cartolina<\/li>\n<li>Tisores<\/li>\n<li>Cinta adhesiva<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<\/div>\n<div id=\"aplicacions\" class=\"tab-pane\">\n<h2>Aplicacions<\/h2>\n<p>Seleccioneu una imatge i els filtres de color per poder visualitzar la imatge en 3D<\/p>\n<div><iframe loading=\"lazy\" style=\"height: 1000px;\" src=\"https:\/\/edumet.cat\/areatac\/zenit\/3d_colors.html\" width=\"90%\" height=\"150\"><\/iframe><\/div>\n<\/div>\n<div id=\"recursos\" class=\"tab-pane\">\n<h2>Recursos<\/h2>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<ul class=\"nav nav-tabs nav-pills\">\n<li class=\"nav-item\"><a class=\"nav-link active\" href=\"#consulta\" data-toggle=\"tab\">Consulta<\/a><\/li>\n<li class=\"nav-item\"><a class=\"nav-link\" href=\"#practica\" data-toggle=\"tab\">Practica<\/a><\/li>\n<\/ul>\n<p>Les imatges estereosc\u00f2piques s&#8217;obtenen a partir de dues fotografies diferents d&#8217;un objecte o escenari, preses des de punts molt propers entre si. Per simular el comportament de la visi\u00f3 humana, s&#8217;escull una dist\u00e0ncia&hellip;  <a href=\"https:\/\/projectes.xtec.cat\/zenit\/general\/p06_ud01-3-titol\/\" title=\"Read 1.1. Creant imatges estereosc\u00f2piques\">Llegeix m\u00e9s\u00bb<\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":""},"categories":[1,330],"tags":[306,317],"class_list":["post-8801","post","type-post","status-publish","format-standard","hentry","category-general","category-obsterra","tag-plafo","tag-ud_models3d"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/projectes.xtec.cat\/zenit\/wp-json\/wp\/v2\/posts\/8801","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/projectes.xtec.cat\/zenit\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/projectes.xtec.cat\/zenit\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/projectes.xtec.cat\/zenit\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/projectes.xtec.cat\/zenit\/wp-json\/wp\/v2\/comments?post=8801"}],"version-history":[{"count":4,"href":"https:\/\/projectes.xtec.cat\/zenit\/wp-json\/wp\/v2\/posts\/8801\/revisions"}],"predecessor-version":[{"id":11392,"href":"https:\/\/projectes.xtec.cat\/zenit\/wp-json\/wp\/v2\/posts\/8801\/revisions\/11392"}],"wp:attachment":[{"href":"https:\/\/projectes.xtec.cat\/zenit\/wp-json\/wp\/v2\/media?parent=8801"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/projectes.xtec.cat\/zenit\/wp-json\/wp\/v2\/categories?post=8801"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/projectes.xtec.cat\/zenit\/wp-json\/wp\/v2\/tags?post=8801"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}