{"id":114785,"date":"2024-04-04T12:25:48","date_gmt":"2024-04-04T10:25:48","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/google-predstavil-biblioteku-jpegli-dlya-bolee-effektivnogo-szhatiya-jpeg-izrbrazhenij"},"modified":"2024-04-04T12:25:48","modified_gmt":"2024-04-04T10:25:48","slug":"google-predstavil-biblioteku-jpegli-dlya-bolee-effektivnogo-szhatiya-jpeg-izrbrazhenij","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/google-predstavil-biblioteku-jpegli-dlya-bolee-effektivnogo-szhatiya-jpeg-izrbrazhenij","title":{"rendered":"Google har pr\u00e6senteret jpegli-biblioteket til mere effektiv kompression af JPEG-billeder","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Google har pr\u00e6senteret et nyt \u00e5bent bibliotek, jpegli, med implementering af en encoder og decoder til billeder i JPEG-format. Biblioteket inkluderer yderligere optimeringer for at forbedre kodningseffektiviteten, hvilket muligg\u00f8r en 35% stigning i kompressionsgraden for h\u00f8j kvalitet billeder sammenlignet med traditionelle JPEG-codecs. I forhold til libjpeg-turbo muligg\u00f8r jpegli opn\u00e5else af et tilsvarende kvalitetsniveau med en reduktion af bitrate p\u00e5 32%. P\u00e5 API- og ABI-niveau er biblioteket fuldt kompatibelt med libjpeg62 og kan bruges som en gennemsigtig erstatning for det. Koden for biblioteket er skrevet i C++ og distribueres under BSD-licensen.

\"Google<\/center> <\/p>\n

Stigningen i kompressionsniveauet opn\u00e5s ved anvendelse af avancerede teknologier til at reducere st\u00f8j p\u00e5 billedet og forbedre kvaliteten, hvilket bruger mere effektive metoder til psykofysiske modeller for at mindske opst\u00e5ede artefakter. Is\u00e6r anvender jpegli adaptiv heuristik for kvantificering, brugt af JPEG XL-projektet, samt forbedrede algoritmer til valg af kvantificeringsmatricer og beregning af mellemliggende resultater. <\/p>\n

Biblioteket jpegli muligg\u00f8r kodning af billeder med 10 eller flere bits pr. farvekomponent. Samtidig tilpasser resultaterne fra de nye kodningsalgoritmer sig til den traditionelle JPEG-model, der kun tillader brug af 8 bits pr. farvekomponent. Denne funktion g\u00f8r det muligt at bevare kompatibilitet med allerede eksisterende decoders, der er designet til 8-bit repr\u00e6sentation af farvekomponenter. <\/p>\n

Billeder kodet ved hj\u00e6lp af jpegli opfylder fuldst\u00e6ndig JPEG-standarden, kr\u00e6ver ikke specifikke decoders, og kan vises i eksisterende JPEG-visningsprogrammer og webbrowsere. Anvendelsen af en egen decoder til at pakke billeder komprimeret med jpegli muligg\u00f8r yderligere reduktion af artefakter. Kodningshastigheden med jpegli er sammenlignelig med bibliotekene libjpeg-turbo og MozJPEG.
\n
Kilde: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Google \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b\u0430 \u043d\u043e\u0432\u0443\u044e \u043e\u0442\u043a\u0440\u044b\u0442\u0443\u044e \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0443 jpegli \u0441 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0435\u0439 \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0449\u0438\u043a\u0430 \u0438 \u0434\u0435\u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0449\u0438\u043a\u0430 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u0439 \u0432 \u0444\u043e\u0440\u043c\u0430\u0442\u0435 JPEG. \u0411\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430 \u0432\u043a\u043b\u044e\u0447\u0430\u0435\u0442 \u0434\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0435 \u043e\u043f\u0442\u0438\u043c\u0438\u0437\u0430\u0446\u0438\u0438 \u0434\u043b\u044f \u043f\u043e\u0432\u044b\u0448\u0435\u043d\u0438\u044f \u044d\u0444\u0444\u0435\u043a\u0442\u0438\u0432\u043d\u043e\u0441\u0442\u0438 \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0435 \u043d\u0430 35% \u0443\u0432\u0435\u043b\u0438\u0447\u0438\u0442\u044c \u0441\u0442\u0435\u043f\u0435\u043d\u044c \u0441\u0436\u0430\u0442\u0438\u044f \u0432\u044b\u0441\u043e\u043a\u043e\u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0445 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u0439, \u043f\u043e \u0441\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u044e \u0441 \u0442\u0440\u0430\u0434\u0438\u0446\u0438\u043e\u043d\u043d\u044b\u043c\u0438 \u043a\u043e\u0434\u0435\u043a\u0430\u043c\u0438 JPEG. \u0412 \u0441\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u0438 \u0441 libjpeg-turbo \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430 jpegli \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u0430\u043d\u0430\u043b\u043e\u0433\u0438\u0447\u043d\u043e\u0433\u043e \u0443\u0440\u043e\u0432\u043d\u044f \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0430 \u043f\u0440\u0438 \u0441\u043d\u0438\u0436\u0435\u043d\u0438\u0438 \u0431\u0438\u0442\u0440\u0435\u0439\u0442\u0430 \u043d\u0430 32%. \u041d\u0430 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":114786,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-114785","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Google pr\u00e6senterede biblioteket jpegli 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