{"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\/ro\/blog\/news\/google-predstavil-biblioteku-jpegli-dlya-bolee-effektivnogo-szhatiya-jpeg-izrbrazhenij","title":{"rendered":"Google a lansat biblioteca jpegli pentru o compresie mai eficient\u0103 a imaginilor JPEG","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Compania Google a lansat noua bibliotec\u0103 deschis\u0103 jpegli care implementeaz\u0103 un codificator \u0219i un decodificator pentru imagini \u00een format JPEG. Biblioteca include optimiz\u0103ri suplimentare pentru a \u00eembun\u0103t\u0103\u021bi eficien\u021ba codific\u0103rii, permi\u021b\u00e2nd o cre\u0219tere cu 35% a gradului de compresie a imaginilor de \u00eenalt\u0103 calitate, comparativ cu codecurile tradi\u021bionale JPEG. Comparativ cu libjpeg-turbo, biblioteca jpegli permite ob\u021binerea unui nivel similar de calitate la o reducere a bitrate-ului cu 32%. La nivel de API \u0219i ABI, biblioteca este complet compatibil\u0103 cu libjpeg62 \u0219i poate fi utilizat\u0103 pentru \u00eenlocuirea ei transparent\u0103. Codul bibliotecii este scris \u00een C++ \u0219i este distribuit sub licen\u021ba BSD.

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

Cre\u0219terea nivelului de compresie se realizeaz\u0103 prin aplicarea tehnologiilor avansate pentru reducerea zgomotului \u00een imagini \u0219i \u00eembun\u0103t\u0103\u021birea calit\u0103\u021bii, utiliz\u00e2nd metode mai eficiente de modelare psihovizual\u0103 pentru a diminua artefactele ap\u0103rute. \u00cen special, jpegli folose\u0219te o heuristic\u0103 adaptiv\u0103 de cuantificare, utilizat\u0103 de proiectul JPEG XL, precum \u0219i algoritmi \u00eembun\u0103t\u0103\u021bi\u021bi pentru selec\u021bia matri\u021belor de cuantificare \u0219i calculul rezultatelor intermediare. <\/p>\n

Biblioteca jpegli permite codarea imaginilor cu o ad\u00e2ncime de culoare de 10 sau mai multe bi\u021bi pe componenta de culoare. \u00cen acest context, rezultatul noilor algoritmi de codificare se adapteaz\u0103 modelului tradi\u021bional pentru formatul JPEG, care permite utilizarea doar a 8 bi\u021bi pe componenta de culoare. Aceast\u0103 caracteristic\u0103 permite p\u0103strarea compatibilit\u0103\u021bii cu decodoarele existente, care sunt concepute pentru o reprezenta\u021bie pe 8 bi\u021bi a componentelor de culoare. <\/p>\n

Imaginile codificate cu jpegli sunt pe deplin conforme cu standardul JPEG, nu necesit\u0103 decodoare specifice \u0219i pot fi vizualizate \u00een vizualizatoarele JPEG existente \u0219i \u00een browserele web. Utilizarea unui decodor propriu pentru decompresarea imaginilor comprimate cu jpegli permite ob\u021binerea unei reduceri suplimentare a artefactelor. Viteza de codificare cu jpegli este comparabil\u0103 cu bibliotecile libjpeg-turbo \u0219i MozJPEG.
\n
Sursa: opennet.ro<\/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\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 a prezentat biblioteca jpegli pentru o 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