{"id":821,"date":"2014-02-03T14:29:05","date_gmt":"2014-02-03T14:29:05","guid":{"rendered":"http:\/\/multimedia.uoc.edu\/blogs\/lab3dav\/?p=821"},"modified":"2014-02-03T14:29:05","modified_gmt":"2014-02-03T14:29:05","slug":"redimensionar-a-lalca","status":"publish","type":"post","link":"http:\/\/multimedia.uoc.edu\/blogs\/lab3dav\/2014\/02\/03\/redimensionar-a-lalca\/","title":{"rendered":"Redimensionar a l&#8217;al\u00e7a"},"content":{"rendered":"<p>Val a dir que \u00e9s un exercici, que \u00e9s quelcom que no hem de fer. Fora d&#8217;algun cas excepcional que per la ra\u00f3 que sigui ens resulti necessari fer-ho. Quan incrementem el nombre de p\u00edxels ens \u201cinventem\u201d informaci\u00f3. \u00c9s a dir, el programa se la \u201cinventa\u201d en un proc\u00e9s que es coneix com a interpolaci\u00f3. Vegem com es fa per\u00f2 tinguem clar que no hem de fer-ho. Millor en tot cas disparar inicialment a la resoluci\u00f3 adient.<br \/>\nObrim el quadre de di\u00e0leg per escalar la imatge en el men\u00fa d&#8217;imatge. Ho fem a<strong> Imagen \/ Tama\u00f1o de la imagen<\/strong>. Veiem que \u00e9s similar al d&#8217;impressi\u00f3, per\u00f2 en aquest quan modifiquem els valors del nombre de p\u00edxels a les caselles d&#8217;amplada i al\u00e7ada, el nombre total de p\u00edxels de la imatge tamb\u00e9 creix. Ho podem comprovar en les dades de la imatge. I tamb\u00e9 visualment perqu\u00e8 quan acaba el proc\u00e9s d&#8217;interpolaci\u00f3 la imatge creix de forma ben clara en pantalla.  Hem interpolat la imatge. El fet de que el proc\u00e9s no \u00e9s massa recomanable es fa evident tamb\u00e9 pel missatge d&#8217;alerta que ens surt quan intentem duplicar les dimensions de la imatge com l&#8217;exemple que hi ha a continuaci\u00f3.<\/p>","protected":false},"excerpt":{"rendered":"<p>Val a dir que \u00e9s un exercici, que \u00e9s quelcom que no hem de fer. Fora d&#8217;algun cas excepcional que per la ra\u00f3 que sigui ens resulti necessari fer-ho. Quan incrementem el nombre de p\u00edxels ens \u201cinventem\u201d informaci\u00f3. \u00c9s a dir, el programa se la \u201cinventa\u201d en un proc\u00e9s que es coneix com a interpolaci\u00f3. &hellip; <\/p>\n<p class=\"link-more\"><a href=\"http:\/\/multimedia.uoc.edu\/blogs\/lab3dav\/2014\/02\/03\/redimensionar-a-lalca\/\" class=\"more-link\">Continua llegint <span class=\"screen-reader-text\">\u00abRedimensionar a l&#8217;al\u00e7a\u00bb<\/span><\/a><\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[25],"tags":[],"class_list":["post-821","post","type-post","status-publish","format-standard","hentry","category-gimp","entry"],"_links":{"self":[{"href":"http:\/\/multimedia.uoc.edu\/blogs\/lab3dav\/wp-json\/wp\/v2\/posts\/821","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/multimedia.uoc.edu\/blogs\/lab3dav\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/multimedia.uoc.edu\/blogs\/lab3dav\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/multimedia.uoc.edu\/blogs\/lab3dav\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"http:\/\/multimedia.uoc.edu\/blogs\/lab3dav\/wp-json\/wp\/v2\/comments?post=821"}],"version-history":[{"count":1,"href":"http:\/\/multimedia.uoc.edu\/blogs\/lab3dav\/wp-json\/wp\/v2\/posts\/821\/revisions"}],"predecessor-version":[{"id":822,"href":"http:\/\/multimedia.uoc.edu\/blogs\/lab3dav\/wp-json\/wp\/v2\/posts\/821\/revisions\/822"}],"wp:attachment":[{"href":"http:\/\/multimedia.uoc.edu\/blogs\/lab3dav\/wp-json\/wp\/v2\/media?parent=821"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/multimedia.uoc.edu\/blogs\/lab3dav\/wp-json\/wp\/v2\/categories?post=821"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/multimedia.uoc.edu\/blogs\/lab3dav\/wp-json\/wp\/v2\/tags?post=821"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}