{"id":728,"date":"2013-12-20T01:00:28","date_gmt":"2013-12-20T00:00:28","guid":{"rendered":"http:\/\/www.proof.de\/?post_type=encyclopedia&p=728"},"modified":"2022-03-15T10:36:23","modified_gmt":"2022-03-15T09:36:23","slug":"gamma","status":"publish","type":"encyclopedia","link":"https:\/\/www.proof.de\/sv\/lexikon\/gamma\/","title":{"rendered":"Gamma"},"content":{"rendered":"
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\n Betygs\u00e4tt nu<\/span>\n <\/div>\n <\/div>\n

Gamma \u00e4r en f\u00f6rkortning f\u00f6r gammakorrigering, en icke-standardiserad metod f\u00f6r att m\u00e4ta kontrast f\u00f6r skannrar, bildsk\u00e4rmar och fotografiskt material.<\/p>\n

Bakgrunden till gammakorrigering \u00e4r att det m\u00e4nskliga \u00f6gat inte uppfattar en j\u00e4mn utveckling fr\u00e5n vitt till svart p\u00e5 ett matematiskt linj\u00e4rt s\u00e4tt. I den m\u00e4nskliga uppfattningen \u00f6kar kontrasten mindre kraftigt i de ljusa omr\u00e5dena, medan den \u00f6kar brantare i de m\u00f6rka omr\u00e5dena.<\/p>\n

En gamma p\u00e5 1,0 inneb\u00e4r att kontrasten inte f\u00f6r\u00e4ndras. Historiskt sett rekommenderades en gamma p\u00e5 1,8 f\u00f6r Mac-sk\u00e4rmar, medan Windows-anv\u00e4ndare rekommenderades en gamma p\u00e5 2,2 som standard. Idag rekommenderas en gamma p\u00e5 2,2 f\u00f6r b\u00e5de Mac och Windows.<\/p>\n

H\u00f6gre gammav\u00e4rden inneb\u00e4r mer kontrast med m\u00f6rkare mellantoner. L\u00e4gre gammav\u00e4rden st\u00e5r f\u00f6r l\u00e4gre kontrast och ljusare mellantoner. Gamma baseras p\u00e5 den vita och svarta punkten<\/a> i en bild, som den inte heller \u00e4ndrar.<\/p>\n

Mer information finns p\u00e5 Wikipedia.<\/a><\/p>\n

F\u00f6r Adobe RGB<\/a> 1998-profilen anges en gamma p\u00e5 2,2 defi<\/a>, f\u00f6r ECI<\/a>-RGB-V2 anges en L*-gamma.<\/p>","protected":false},"excerpt":{"rendered":"

Gamma \u00e4r en f\u00f6rkortning f\u00f6r gammakorrigering, en icke-standardiserad metod f\u00f6r att m\u00e4ta kontrast f\u00f6r skannrar, bildsk\u00e4rmar och fotografiskt material. <\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","template":"","meta":{"inline_featured_image":false,"footnotes":""},"class_list":["post-728","encyclopedia","type-encyclopedia","status-publish","hentry","no-featured-image-padding"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.proof.de\/sv\/wp-json\/wp\/v2\/encyclopedia\/728","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.proof.de\/sv\/wp-json\/wp\/v2\/encyclopedia"}],"about":[{"href":"https:\/\/www.proof.de\/sv\/wp-json\/wp\/v2\/types\/encyclopedia"}],"author":[{"embeddable":true,"href":"https:\/\/www.proof.de\/sv\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.proof.de\/sv\/wp-json\/wp\/v2\/comments?post=728"}],"version-history":[{"count":2,"href":"https:\/\/www.proof.de\/sv\/wp-json\/wp\/v2\/encyclopedia\/728\/revisions"}],"predecessor-version":[{"id":3708,"href":"https:\/\/www.proof.de\/sv\/wp-json\/wp\/v2\/encyclopedia\/728\/revisions\/3708"}],"wp:attachment":[{"href":"https:\/\/www.proof.de\/sv\/wp-json\/wp\/v2\/media?parent=728"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}