{"id":1348,"date":"2025-04-12T13:20:36","date_gmt":"2025-04-12T13:20:36","guid":{"rendered":"https:\/\/blog.faktor0.de\/?p=1348"},"modified":"2025-04-12T16:05:54","modified_gmt":"2025-04-12T16:05:54","slug":"imagemagick-kontrast-und-helligkeit-aendern","status":"publish","type":"post","link":"https:\/\/blog.faktor0.de\/?p=1348","title":{"rendered":"ImageMagick &#8211;  Kontrast und Helligkeit \u00e4ndern"},"content":{"rendered":"<p>Beispiel: Helligkeit um 20% erh\u00f6hen, Kontrast um 35% erh\u00f6hen:<br \/>\n<strong>convert bild.jpg -brightness-contrast 20&#215;35 bild.optimized.jpg<\/strong><\/p>\n<p>Beispiel: Helligkeit um 10% verringern, Kontrast um 10% verringern:<br \/>\n<strong>convert bild.jpg -brightness-contrast -20x-35 bild.optimized.jpg<\/strong><\/p>\n<p>Beispiel: Gammekorrektur Faktor 2.0:<br \/>\n<strong>convert bild.jpg -level 0%,100%,2.0 bild.gamma.jpg<\/strong><\/p>\n<p><a href=\"https:\/\/www.archivscan.ch\/imagemagick_helligkeit_kontrast_gamma_farbsaettigung\">https:\/\/www.archivscan.ch\/imagemagick_helligkeit_kontrast_gamma_farbsaettigung<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Beispiel: Helligkeit um 20% erh\u00f6hen, Kontrast um 35% erh\u00f6hen: convert bild.jpg -brightness-contrast 20&#215;35 bild.optimized.jpg Beispiel: Helligkeit um 10% verringern, Kontrast um 10% verringern: convert bild.jpg -brightness-contrast -20x-35 bild.optimized.jpg Beispiel: Gammekorrektur Faktor 2.0: convert bild.jpg -level 0%,100%,2.0 bild.gamma.jpg https:\/\/www.archivscan.ch\/imagemagick_helligkeit_kontrast_gamma_farbsaettigung<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19,31,11,26,2],"tags":[],"class_list":["post-1348","post","type-post","status-publish","format-standard","hentry","category-grafik","category-linux-mint","category-shell","category-ubuntu","category-unix"],"_links":{"self":[{"href":"https:\/\/blog.faktor0.de\/index.php?rest_route=\/wp\/v2\/posts\/1348","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.faktor0.de\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.faktor0.de\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.faktor0.de\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.faktor0.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1348"}],"version-history":[{"count":5,"href":"https:\/\/blog.faktor0.de\/index.php?rest_route=\/wp\/v2\/posts\/1348\/revisions"}],"predecessor-version":[{"id":1353,"href":"https:\/\/blog.faktor0.de\/index.php?rest_route=\/wp\/v2\/posts\/1348\/revisions\/1353"}],"wp:attachment":[{"href":"https:\/\/blog.faktor0.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1348"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.faktor0.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1348"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.faktor0.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1348"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}