{"id":8339,"date":"2023-08-25T00:00:00","date_gmt":"2023-08-25T00:00:00","guid":{"rendered":"https:\/\/tech-lib.eu\/tech\/vyznam-hdr-v-rozliseni-4k-zlepseni-vizualniho-zazitku\/"},"modified":"2023-08-25T00:00:00","modified_gmt":"2023-08-25T00:00:00","slug":"vyznam-hdr-v-rozliseni-4k-zlepseni-vizualniho-zazitku","status":"publish","type":"post","link":"https:\/\/tech-lib.eu\/tech\/vyznam-hdr-v-rozliseni-4k-zlepseni-vizualniho-zazitku\/","title":{"rendered":"V\u00fdznam HDR v rozli\u0161en\u00ed 4K. Zlep\u0161en\u00ed vizu\u00e1ln\u00edho z\u00e1\u017eitku"},"content":{"rendered":"
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Co znamen\u00e1 4K HDR?<\/div>\n
Za prv\u00e9 HDR, zkratka pro anglick\u00e9 high dynamic range \u2013 opat\u0159eno vysok\u00fdm rozsahem, co\u017e znamen\u00e1, \u017ee vytv\u00e1\u0159\u00ed lep\u0161\u00ed, dynami\u010dt\u011bj\u0161\u00ed pixely, a to d\u00edky vy\u0161\u0161\u00edmu kontrastu a jasu \u010d\u00edm\u017e poskytuje \u0161ir\u0161\u00ed \u0161k\u00e1lu barev. Za druh\u00e9 4k\/ UHD poskytuje \u010dty\u0159n\u00e1sobn\u00fd po\u010det pixel\u016f ne\u017e rozli\u0161en\u00ed 1080p, tak\u017ee by m\u011blo b\u00fdt \u010dty\u0159ikr\u00e1t kvalitn\u011bj\u0161\u00ed, \u017ee?<\/div>\n
\n\t\t\t\t\t Dal\u0161\u00ed informace najdete na<\/span> www.porovnejsito.cz<\/a>\n\t\t\t\t<\/div>\n<\/p><\/div>\n
V posledn\u00edch letech roste popularita technologie vysok\u00e9ho dynamick\u00e9ho rozsahu (HDR), zejm\u00e9na v souvislosti s obrazovkami 4K. HDR zcela zm\u011bnilo zp\u016fsob, jak\u00fdm sledujeme a oce\u0148ujeme vizu\u00e1ln\u00ed obsah, proto\u017ee poskytuje realisti\u010dt\u011bj\u0161\u00ed a pohlcuj\u00edc\u00ed z\u00e1\u017eitek ze sledov\u00e1n\u00ed. Abychom \u010dten\u00e1\u0159\u016fm poskytli d\u016fkladn\u00e9 znalosti o t\u00e9to technologii, budeme se v tomto \u010dl\u00e1nku zab\u00fdvat v\u00fdznamem HDR v rozli\u0161en\u00ed 4K a odpov\u00edme na \u0159adu relevantn\u00edch ot\u00e1zek. <\/p>\n
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P\u0159i rozhodov\u00e1n\u00ed o tom, zda je v\u00fdznamn\u011bj\u0161\u00ed HDR, nebo 4K, je z\u00e1sadn\u00ed rozli\u0161ovat mezi t\u011bmito dv\u011bma mo\u017enostmi. Rozli\u0161en\u00ed displeje se ozna\u010duje jako 4K, b\u011b\u017en\u011b zn\u00e1m\u00e9 jako Ultra High Definition (UHD), zat\u00edmco jeho barevn\u00fd gamut a kontrastn\u00ed rozsah se ozna\u010duj\u00ed jako HDR. A\u010dkoli HDR m\u016f\u017ee m\u00edt z\u0159ejm\u011bj\u0161\u00ed vliv na celkov\u00fd vizu\u00e1ln\u00ed z\u00e1\u017eitek, ob\u011b technologie maj\u00ed sv\u016fj v\u00fdznam. Zat\u00edmco HDR zlep\u0161uje kvalitu obrazu t\u00edm, \u017ee nab\u00edz\u00ed \u0161ir\u0161\u00ed spektrum barev a kontrastu, co\u017e vede k jasn\u011bj\u0161\u00edmu a realisti\u010dt\u011bj\u0161\u00edmu obrazu, 4K zvy\u0161uje \u00farove\u0148 detail\u016f. <\/p>\n

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Sou\u010dasn\u00e9 monitory na\u0161t\u011bst\u00ed dok\u00e1\u017e\u00ed poskytovat rozli\u0161en\u00ed 4K a HDR sou\u010dasn\u011b. Ve skute\u010dnosti je tato funkce v sou\u010dasn\u00e9 dob\u011b zabudov\u00e1na v mnoha \u0161pi\u010dkov\u00fdch televizorech a monitorech. Div\u00e1ci tak mohou vyu\u017e\u00edvat v\u00fdhod obou technologi\u00ed a z\u00e1rove\u0148 se pono\u0159it do \u00fa\u017easn\u011b ostr\u00e9ho obrazu s lep\u0161\u00ed barevnou hloubkou a kontrastem. V\u00fdrobci obsahu mohou kombinac\u00ed 4K a HDR p\u0159in\u00e9st skute\u010dn\u011b podmaniv\u00fd z\u00e1\u017eitek, kter\u00fd z hlediska realisti\u010dnosti a vizu\u00e1ln\u00ed v\u011brnosti p\u0159ed\u010d\u00ed b\u011b\u017en\u00e9 obrazovky. <\/p>\n

<\/div>\n

Vizu\u00e1ln\u00ed kvalita 4K s HDR a 4K bez HDR se od sebe v\u00fdrazn\u011b li\u0161\u00ed. Bez HDR m\u016f\u017ee obraz p\u016fsobit plo\u0161e a nev\u00fdrazn\u011b. Sv\u011btla mohou b\u00fdt p\u0159eexponovan\u00e1, barvy se mohou zd\u00e1t vymyt\u00e9 a detaily ve st\u00ednech mohou b\u00fdt ztraceny. Na druhou stranu obraz, kter\u00fd je \u017eiv\u011bj\u0161\u00ed a kr\u00e1sn\u011bj\u0161\u00ed na pohled, p\u0159in\u00e1\u0161\u00ed 4K s HDR. V\u011bt\u0161\u00ed p\u0159esnost barev, lep\u0161\u00ed detaily st\u00edn\u016f a jasn\u011bj\u0161\u00ed sv\u011btla jsou umo\u017en\u011bny \u0161ir\u0161\u00edm barevn\u00fdm gamutem a \u0161ir\u0161\u00edm rozsahem kontrastu. V\u00fdsledkem je vizu\u00e1ln\u011b p\u016fsobiv\u011bj\u0161\u00ed a poutav\u011bj\u0161\u00ed z\u00e1\u017eitek, kter\u00fd o\u017eiv\u00ed obsah zp\u016fsobem, kter\u00fd d\u0159\u00edve nebyl mo\u017en\u00fd. <\/p>\n

<\/div>\n

P\u0159esto\u017ee HDR m\u016f\u017ee v\u00fdrazn\u011b zlep\u0161it vizu\u00e1ln\u00ed z\u00e1\u017eitek, mohou nastat situace, kdy je lep\u0161\u00ed jej vypnout. Absence optimalizace HDR u n\u011bkter\u00fdch star\u0161\u00edch nebo m\u00e9n\u011b kvalitn\u00edch z\u00e1b\u011br\u016f m\u016f\u017ee m\u00edt za n\u00e1sledek nep\u0159irozen\u00e9 barvy nebo zkreslen\u00ed. Vypnut\u00ed HDR za t\u011bchto okolnost\u00ed m\u016f\u017ee v\u00e9st k realisti\u010dt\u011bj\u0161\u00edmu zobrazen\u00ed materi\u00e1lu. Vyv\u00e1\u017een\u011bj\u0161\u00edho vizu\u00e1ln\u00edho z\u00e1\u017eitku lze dos\u00e1hnout vypnut\u00edm HDR pro div\u00e1ky, kte\u0159\u00ed d\u00e1vaj\u00ed p\u0159ednost tlumen\u011bj\u0161\u00edmu nebo p\u0159irozen\u011bj\u0161\u00edmu vzhledu. Zapnut\u00ed nebo vypnut\u00ed HDR by nakonec m\u011blo z\u00e1viset na osobn\u00edch preferenc\u00edch a konkr\u00e9tn\u00edm zobrazovan\u00e9m obsahu. <\/p>\n

<\/div>\n

Z\u00e1v\u011brem lze \u0159\u00edci, \u017ee technologie HDR m\u00e1 z\u00e1sadn\u00ed v\u00fdznam pro zlep\u0161en\u00ed vizu\u00e1ln\u00edho z\u00e1\u017eitku ze 4K. D\u00edky HDR je obsah barevn\u011bj\u0161\u00ed a realisti\u010dt\u011bj\u0161\u00ed, proto\u017ee zobrazuje v\u011bt\u0161\u00ed spektrum barev a kontrast. P\u0159esto\u017ee jsou technologie 4K i HDR v\u00fdznamn\u00e9, HDR m\u00e1 potenci\u00e1l v\u00fdrazn\u011b zlep\u0161it celkovou kvalitu obrazu. D\u00edky kombinaci rozli\u0161en\u00ed 4K a HDR se div\u00e1k\u016fm nab\u00edz\u00ed zcela pohlcuj\u00edc\u00ed z\u00e1\u017eitek, kter\u00fd ukazuje pln\u00fd potenci\u00e1l sou\u010dasn\u00fdch displej\u016f. V \u00favahu je t\u0159eba br\u00e1t i sledovan\u00fd obsah a osobn\u00ed vkus, proto\u017ee mohou nastat okolnosti, kdy vypnut\u00ed HDR m\u016f\u017ee v\u00e9st k p\u0159esn\u011bj\u0161\u00edmu nebo vyv\u00e1\u017een\u011bj\u0161\u00edmu vizu\u00e1ln\u00edmu zobrazen\u00ed.<\/p><\/div>\n

\n
FAQ<\/div>\n
\n
Kdy byste nem\u011bli pou\u017e\u00edvat HDR?<\/div>\n

P\u0159i pou\u017eit\u00ed monitoru bez funkc\u00ed HDR nebo p\u0159i sledov\u00e1n\u00ed obsahu, kter\u00fd je nepodporuje, byste HDR nem\u011bli pou\u017e\u00edvat. Nav\u00edc HDR pro v\u00e1s nemus\u00ed b\u00fdt tou nejlep\u0161\u00ed volbou, pokud m\u00e1te r\u00e1di p\u0159irozen\u011bj\u0161\u00ed nebo tlumen\u011bj\u0161\u00ed vizu\u00e1ln\u00ed z\u00e1\u017eitek, proto\u017ee zlep\u0161uje kontrast a sytost barev, co\u017e m\u016f\u017ee v\u00e9st k jasn\u011bj\u0161\u00edmu a dynami\u010dt\u011bj\u0161\u00edmu obrazu. <\/p>\n<\/div>\n

\n
Vyplat\u00ed se 4K bez HDR?<\/div>\n

Ve srovn\u00e1n\u00ed s form\u00e1ty s ni\u017e\u0161\u00edm rozli\u0161en\u00edm m\u016f\u017ee 4K i bez HDR poskytnout v\u00fdrazn\u011b lep\u0161\u00ed z\u00e1\u017eitek. Technologie HDR (High Dynamic Range) v\u0161ak d\u00edky roz\u0161\u00ed\u0159en\u00ed barevn\u00e9ho a kontrastn\u00edho rozsahu informac\u00ed podstatn\u011b zlep\u0161uje vizu\u00e1ln\u00ed z\u00e1\u017eitek. Umo\u017e\u0148uje m\u00edt \u017eiv\u011bj\u0161\u00ed barvy, jasn\u011bj\u0161\u00ed sv\u011btla a hlub\u0161\u00ed \u010dernou, co\u017e vytv\u00e1\u0159\u00ed realisti\u010dt\u011bj\u0161\u00ed a pohlcuj\u00edc\u00ed z\u00e1\u017eitek ze sledov\u00e1n\u00ed. Proto se technologie HDR d\u016frazn\u011b doporu\u010duje, pokud chcete pln\u011b vyu\u017e\u00edt potenci\u00e1l videa v rozli\u0161en\u00ed 4K. Bez HDR mo\u017en\u00e1 nebudete schopni pln\u011b ocenit bohatost a hloubku, kterou 4K nab\u00edz\u00ed. <\/p>\n<\/div>\n

\n
Sni\u017euje HDR po\u010det sn\u00edmk\u016f za sekundu?<\/div>\n

Ne, HDR (vysok\u00fd dynamick\u00fd rozsah) nezp\u016fsobuje sn\u00ed\u017een\u00ed FPS. Term\u00edn „po\u010det sn\u00edmk\u016f za sekundu“ (FPS) popisuje, kolik sn\u00edmk\u016f se ve videu nebo h\u0159e zobraz\u00ed za sekundu. T\u00edm, \u017ee HDR nab\u00edz\u00ed v\u011bt\u0161\u00ed spektrum barev a kontrast, je naopak technikou, kter\u00e1 zlep\u0161uje vizu\u00e1ln\u00ed z\u00e1\u017eitek. Implementace HDR m\u016f\u017ee vy\u017eadovat v\u011bt\u0161\u00ed v\u00fdpo\u010detn\u00ed v\u00fdkon, ale nem\u00e1 p\u0159\u00edm\u00fd vliv na to, jak rychle se film nebo hra pohybuje. Na sn\u00edmkovou frekvenci maj\u00ed z\u00e1sadn\u00ed vliv mo\u017enosti za\u0159\u00edzen\u00ed, slo\u017eitost vizu\u00e1ln\u00edch efekt\u016f a v\u00fdkon hardwaru.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Co znamen\u00e1 4K HDR? Za prv\u00e9 HDR, zkratka pro anglick\u00e9 high dynamic range \u2013 opat\u0159eno vysok\u00fdm rozsahem, co\u017e znamen\u00e1, \u017ee vytv\u00e1\u0159\u00ed lep\u0161\u00ed, dynami\u010dt\u011bj\u0161\u00ed pixely, a to d\u00edky vy\u0161\u0161\u00edmu kontrastu a jasu \u010d\u00edm\u017e poskytuje \u0161ir\u0161\u00ed \u0161k\u00e1lu barev. Za druh\u00e9 4k\/ UHD poskytuje \u010dty\u0159n\u00e1sobn\u00fd po\u010det pixel\u016f ne\u017e rozli\u0161en\u00ed 1080p, tak\u017ee by m\u011blo b\u00fdt \u010dty\u0159ikr\u00e1t kvalitn\u011bj\u0161\u00ed, \u017ee? Dal\u0161\u00ed … \u010c\u00edst d\u00e1l<\/a><\/p>\n","protected":false},"author":4006,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3233],"tags":[],"class_list":["post-8339","post","type-post","status-publish","format-standard","hentry","category-4k-hdr"],"_links":{"self":[{"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/posts\/8339","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/users\/4006"}],"replies":[{"embeddable":true,"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/comments?post=8339"}],"version-history":[{"count":0,"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/posts\/8339\/revisions"}],"wp:attachment":[{"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/media?parent=8339"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/categories?post=8339"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/tags?post=8339"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}