{"id":32237,"date":"2022-01-28T14:23:58","date_gmt":"2022-01-28T13:23:58","guid":{"rendered":"https:\/\/www.ideator.si\/?p=32237"},"modified":"2022-01-28T14:23:58","modified_gmt":"2022-01-28T13:23:58","slug":"jpeg-compression-how-it-works","status":"publish","type":"post","link":"https:\/\/davidpraznik.com\/en\/jpeg-kompresija-kako-deluje\/","title":{"rendered":"JPEG compression - how does it work?"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1330\" height=\"490\" src=\"https:\/\/www.ideator.si\/wp-content\/uploads\/2022\/01\/jpeg_in_kako_deluje_kompresija_intro_ideatorsi.png\" alt=\"JPEG in kako deluje kompresija - naslovna slika\" class=\"wp-image-32238\" title=\"JPEG in kako deluje kompresija - naslovna slika\" srcset=\"https:\/\/davidpraznik.com\/wp-content\/uploads\/2022\/01\/jpeg_in_kako_deluje_kompresija_intro_ideatorsi.png 1330w, https:\/\/davidpraznik.com\/wp-content\/uploads\/2022\/01\/jpeg_in_kako_deluje_kompresija_intro_ideatorsi-300x111.png 300w, https:\/\/davidpraznik.com\/wp-content\/uploads\/2022\/01\/jpeg_in_kako_deluje_kompresija_intro_ideatorsi-1024x377.png 1024w, https:\/\/davidpraznik.com\/wp-content\/uploads\/2022\/01\/jpeg_in_kako_deluje_kompresija_intro_ideatorsi-768x283.png 768w\" sizes=\"(max-width: 1330px) 100vw, 1330px\" \/><\/figure>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p style=\"font-size:30px\"><strong>JPEG kompresija<\/strong> je na voljo \u017ee od leta 1992. In \u010deprav ima v digitalnem svetu le redko katera inovacija tako dolgo \u017eivljensko dobo, se je JPEG izkazal za izjemo. Zakaj je tako uspe\u0161en?<\/p>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Video posnetek odgovarja na to vpra\u0161anje in predstavlja na\u010din kako deluje nepovratna kompresija (loosy compression). \u010ceprav je vsebinsko zahtevnej\u0161i, si ga boste morda morali nekajkrat ogledati, da boste razumeli vse.<\/p>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-kako-deluje-jpeg-kompresija\">Kako deluje JPEG kompresija?<\/h2>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"How are Images Compressed?  [46MB \u2198\u2198 4.07MB] JPEG In Depth\" width=\"800\" height=\"450\" src=\"https:\/\/www.youtube.com\/embed\/Kv1Hiv3ox8I?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-kazalo\">Kazalo<\/h2>\n\n\n\n<p>00:00 &#8211; Uvod v JPEG<br>01:24 &#8211; Kaj po\u010dne JPEG?<br>02:35 &#8211; Kak\u0161ni so koraki JPEG?<br>04:06 &#8211; Pretvorba barvnega prostora<br>06:06 &#8211; Diskretna kosinusna transformacija<br>09:32 &#8211; Kvantizacija<br>11:02 &#8211; Dol\u017eina teka in Huffmanovo kodiranje<br>12:04 &#8211; Stiskanje videa H.264<br>13:25 &#8211; Obnova slike<br>15:01 &#8211; Opombe in opozorila o JPEG<\/p>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"viri\">Viri<\/h2>\n\n\n\n<p><a href=\"https:\/\/www.youtube.com\/watch?v=Kv1Hiv3ox8I\" target=\"_blank\" rel=\"noreferrer noopener\">How are Images Compressed?<\/a><br><a href=\"https:\/\/cgjennings.ca\/articles\/jpeg-compression\/\" target=\"_blank\" rel=\"noreferrer noopener\">How JPEG works?<\/a><br><a href=\"https:\/\/arjunsreedharan.org\/post\/146070390717\/jpeg-101-how-does-jpeg-work\" target=\"_blank\" rel=\"noreferrer noopener\">JPEG 101 &#8211; How does JPEG work?<\/a><br><a href=\"https:\/\/en.wikipedia.org\/wiki\/Lossy_compression\" target=\"_blank\" rel=\"noreferrer noopener\">Loosy Compression<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>JPEG kompresija je na voljo \u017ee od leta 1992. In \u010deprav ima v digitalnem svetu le redko katera inovacija tako dolgo \u017eivljensko dobo, se je JPEG izkazal za izjemo. Zakaj je tako uspe\u0161en? Video posnetek odgovarja na to vpra\u0161anje in predstavlja na\u010din kako deluje nepovratna kompresija (loosy compression). \u010ceprav je vsebinsko zahtevnej\u0161i, si ga boste [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":32239,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[16,13,12,7],"tags":[],"class_list":["post-32237","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fotografija","category-oblikovanje","category-ucenje","category-vse"],"_links":{"self":[{"href":"https:\/\/davidpraznik.com\/en\/wp-json\/wp\/v2\/posts\/32237","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/davidpraznik.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/davidpraznik.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/davidpraznik.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/davidpraznik.com\/en\/wp-json\/wp\/v2\/comments?post=32237"}],"version-history":[{"count":0,"href":"https:\/\/davidpraznik.com\/en\/wp-json\/wp\/v2\/posts\/32237\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/davidpraznik.com\/en\/wp-json\/wp\/v2\/media\/32239"}],"wp:attachment":[{"href":"https:\/\/davidpraznik.com\/en\/wp-json\/wp\/v2\/media?parent=32237"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/davidpraznik.com\/en\/wp-json\/wp\/v2\/categories?post=32237"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/davidpraznik.com\/en\/wp-json\/wp\/v2\/tags?post=32237"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}