{"id":2826,"date":"2022-11-09T00:40:13","date_gmt":"2022-11-09T00:40:13","guid":{"rendered":"https:\/\/global.tab-tv.com\/sk\/?p=2826"},"modified":"2022-11-09T00:40:14","modified_gmt":"2022-11-09T00:40:14","slug":"farebny-priestor-adobe-rgb-vs-srgb-vs-ntsc-vs-rec-2020-vs-porovnanie-farebneho-modelu-smyk","status":"publish","type":"post","link":"https:\/\/global.tab-tv.com\/sk\/farebny-priestor-adobe-rgb-vs-srgb-vs-ntsc-vs-rec-2020-vs-porovnanie-farebneho-modelu-smyk\/","title":{"rendered":"Farebn\u00fd priestor Adobe RGB vs sRGB vs NTSC vs REC 2020 vs porovnanie farebn\u00e9ho modelu SMYK"},"content":{"rendered":"\n

Spolo\u010dnosti s produktmi s\u00favisiacimi s tla\u010dou alebo v\u00fdvojom grafiky a spracovan\u00edm obrazu \u010delia potrebe \u0161tandardizova\u0165 farebn\u00e9 t\u00f3ny. Je to potrebn\u00e9 na spr\u00e1vne zobrazenie obrazu na monitoroch alebo pri tla\u010di.<\/p>\n\n\n\n

Preto boli vyn\u00e1jden\u00e9 r\u00f4zne normy. V\u00fdrobcovia monitorov, telev\u00edzorov a tla\u010diarn\u00ed uv\u00e1dzaj\u00fa, ktor\u00fd \u0161tandard podania farieb ich v\u00fdrobky podporuj\u00fa. Pokia\u013e ide o telev\u00edzory a monitory, v\u00fdrobcovia pou\u017e\u00edvaj\u00fa r\u00f4zne prostriedky na meranie rozsahu farieb obrazovky. Mnoh\u00fdm \u013eu\u010fom v\u0161ak absol\u00fatne ni\u010d nehovor\u00ed parameter sRGB120% podpora farebn\u00e9ho gamutu. Popul\u00e1rne v\u0161ak vysvetl\u00edm, \u010do to znamen\u00e1 v praxi.<\/p>\n\n\n\n

V\u0161imnite si, \u017ee normy sa spravidla pou\u017e\u00edvaj\u00fa s maxim\u00e1lnymi hodnotami. Ak je napr\u00edklad uveden\u00e9, \u017ee je podporovan\u00e1 norma NTSC72 %, zodpoved\u00e1 to pribli\u017ene norme sRGB100 %. Naopak, sRGB 120 % pribli\u017ene zodpoved\u00e1 RGB.<\/p>\n\n\n\n

Pre v\u00e4\u010d\u0161inu pou\u017e\u00edvate\u013eov v\u0161etky tieto parametre ni\u010d neznamenaj\u00fa. Je jednoduch\u0161ie pou\u017e\u00edva\u0165 pojem farebn\u00e1 h\u013abka na bit. Napr\u00edklad 8 bitov s\u00fa telev\u00edzory strednej triedy a 10 bitov s\u00fa pr\u00e9miov\u00e9 telev\u00edzory.<\/p>\n\n\n\n

<\/a>\u010co je sRGB 125%, NTSC 72%, RGB92%, CMYK 50%<\/strong><\/h1>\n\n\n\n

V popisoch monitorov m\u00f4\u017eete v \u0161pecifik\u00e1ci\u00e1ch vidie\u0165 podporu pre sRGB-125 % alebo NTSC 72 %, Adobe RGB 92 % a CMYK 50 %. Tieto parametre ud\u00e1vaj\u00fa, ko\u013eko farebn\u00fdch odtie\u0148ov dok\u00e1\u017ee monitor zobrazi\u0165 od \u0161tandardu. Je to ve\u013emi relat\u00edvne. Vizu\u00e1lne na za\u010diatku \u010dl\u00e1nku m\u00f4\u017eete vidie\u0165, ak\u00fd farebn\u00fd priestor pokr\u00fdva konkr\u00e9tny \u0161tandard. \u010c\u00edm v\u00e4\u010d\u0161ie je pokrytie, t\u00fdm viac farieb m\u00f4\u017eete vytvori\u0165. Toto v\u0161etko pravdepodobne konven\u010dne pozn\u00e1te, ale ja v\u00e1m poviem o jednotliv\u00fdch form\u00e1toch.<\/p>\n\n\n\n

<\/a>farebn\u00fd \u0161tandard sRGB<\/strong><\/h2>\n\n\n\n

sRGB <\/strong>– Cie\u013eom tohto \u0161tandardu, ktor\u00fd v roku 1996 vytvorili spolo\u010dnosti HP a Microsoft, bolo zjednoti\u0165 farby monitorov tla\u010diarn\u00ed a internetu tak, aby obr\u00e1zky mali rovnak\u00fd farebn\u00fd rozsah a aby sa pri tla\u010di a prezeran\u00ed zobrazovali rovnako. Je to hlavn\u00fd \u0161tandard pou\u017e\u00edvan\u00fd v monitoroch. Ak na monitore pou\u017eijete sRGB, pri tla\u010di z\u00edskate obr\u00e1zok ako na monitore. Je to v\u00fdhodn\u00e9, preto\u017ee to nevy\u017eaduje dodato\u010dn\u00e9 korekcie. Ke\u010f\u017ee v\u0161ak tento \u0161tandard bol vyvinut\u00fd pred takmer 30 rokmi, m\u00e1 pomerne obmedzen\u00fd rozsah pokrytia farieb a je v podstate najmenej progres\u00edvnym \u0161tandardom.<\/p>\n\n\n\n

<\/a>Farebn\u00fd profil Adobe RGB<\/strong><\/h2>\n\n\n\n

Adobe RGB <\/strong>– ako u\u017e n\u00e1zov napoved\u00e1, bol vyvinut\u00fd v roku 1998 spolo\u010dnos\u0165ou Adobe s cie\u013eom vytvori\u0165 \u0161tandard s roz\u0161\u00edren\u00fdm farebn\u00fdm rozsahom v\u00e4\u010d\u0161\u00edm ako sRGB.<\/p>\n\n\n\n

V 90. rokoch 20. storo\u010dia boli vyvinut\u00e9 tla\u010diarne, ktor\u00e9 na farebn\u00fa tla\u010d pou\u017e\u00edvali farebn\u00fd model CMYK, \u010do umo\u017enilo vytv\u00e1ra\u0165 v\u00fdtla\u010dky s roz\u0161\u00edrenej\u0161\u00edm farebn\u00fdm gamutom ako sRGB. Tento pokro\u010dilej\u0161\u00ed \u0161tandard bol p\u00f4vodne umiestnen\u00fd ako zobrazenie farieb pre profesion\u00e1lne monitory a telev\u00edzory s vylep\u0161en\u00fdmi obrazovkami. Nev\u00fdhodou je, \u017ee nie v\u0161etky zariadenia tento \u0161tandard podporuj\u00fa. M\u00f4\u017eete napr\u00edklad pou\u017ei\u0165 farebn\u00fd profil RGB vo Photoshope, ale ak va\u0161a tla\u010diare\u0148 tento profil nepodporuje, nakoniec z\u00edskate in\u00fa fotografiu, ne\u017e ak\u00fa vid\u00edte na obrazovke. Tento profil je najvyv\u00e1\u017eenej\u0161\u00ed a vhodn\u00fd pre v\u00e4\u010d\u0161inu pou\u017e\u00edvate\u013eov a je najbe\u017enej\u0161\u00ed.<\/p>\n\n\n\n

<\/a>Farebn\u00fd rozsah NTSC<\/strong><\/h2>\n\n\n\n

NTSC: <\/strong>Jeden z prv\u00fdch farebn\u00fdch \u0161tandardov bol vyvinut\u00fd v roku 1953, ke\u010f bola vyvinut\u00e1 farebn\u00e1 telev\u00edzia. \u00c1no, pr\u00e1ve v roku 1953 bolo \u0161tandardizovan\u00e9 farebn\u00e9 zobrazenie pre film a farebn\u00fa telev\u00edziu. T\u00e1to norma stanovila, ak\u00e9 farebn\u00e9 odtiene m\u00f4\u017ee ma\u0165 farebn\u00fd telev\u00edzny obraz. Farebn\u00fd profil NTSC sa v s\u00fa\u010dasnosti nepou\u017e\u00edva (je to anal\u00f3gov\u00fd \u0161tandard), ale pou\u017e\u00edva sa na porovnanie, preto\u017ee tento \u0161tandard mal pomerne \u0161irok\u00e9 farebn\u00e9 spektrum. M\u00f4\u017ee vznikn\u00fa\u0165 ot\u00e1zka, pre\u010do bola v roku 1953 prijat\u00e1 norma na prenos farebn\u00fdch odtie\u0148ov a v\u00e4\u010d\u0161ina telev\u00edzorov a monitorov ju o 65 rokov nesk\u00f4r nedok\u00e1\u017ee dosiahnu\u0165.<\/p>\n\n\n\n

Odpove\u010f je jednoduch\u00e1: norma bola vyvinut\u00e1 pre telev\u00edzory s elektr\u00f3nkami. A mali by ste vedie\u0165, \u017ee elektronick\u00e9 elektr\u00f3nky maj\u00fa lep\u0161iu kvalitu ako zariadenia na b\u00e1ze tranzistorov. Na CRT telev\u00edzoroch a monitoroch m\u00f4\u017eete dosiahnu\u0165 lep\u0161iu reprodukciu farieb. Napr\u00edklad profesion\u00e1lne nahr\u00e1vacie \u0161t\u00fadi\u00e1 a koncertn\u00e9 zvukov\u00e9 syst\u00e9my st\u00e1le pou\u017e\u00edvaj\u00fa v zosil\u0148ova\u010doch v\u00e1kuov\u00e9 elektr\u00f3nky. V\u010faka tomu je zvuk \u010distej\u0161\u00ed. Pr\u00e1ve na to bol vyvinut\u00fd \u0161tandard pre CRT.<\/p>\n\n\n\n

<\/a>NTSC 100% vs NTSC 72%<\/strong><\/h3>\n\n\n
\n
\"\"<\/figure>\n<\/div>\n\n\n

Pozrite sa, ako bude vyzera\u0165 pribli\u017ene 72 % obrazu NTSC oproti 100 % obrazu NTSC, \u010do je ve\u013emi konven\u010dn\u00fd obraz. V re\u00e1lnom svete to z\u00e1vis\u00ed od kvality a technol\u00f3gie displeja, z\u00e1jdite napr\u00edklad do obchodu s telev\u00edzormi alebo notebookmi. Po\u017eiadajte ich, aby ten ist\u00fd obraz umiestnili na obrazovky, uvid\u00edte rozdiely v odtie\u0148och farieb na r\u00f4znych zariadeniach.<\/p>\n\n\n\n

<\/a>Farebn\u00fd priestor REC 2020, REC 2100<\/strong><\/h2>\n\n\n\n

\u0160tandardy REC 2020 <\/strong>(2012) pre UHDTV (UHD 4K a UHD 8K). Farebn\u00fd priestor RGB, ktor\u00e9ho farebn\u00fd rozsah je rozsiahlej\u0161\u00ed ako takmer v\u0161etky ostatn\u00e9 farebn\u00e9 priestory RGB. Neexistuj\u00fa displeje schopn\u00e9 zobrazi\u0165 cel\u00fd farebn\u00fd rozsah REC 2020. Najpokro\u010dilej\u0161ie displeje zobrazuj\u00fa pribli\u017ene 97 % farebn\u00e9ho priestoru. REC 2020 je ur\u010den\u00fd pre SDR. S pr\u00edchodom HDR a schopnos\u0165ou zobrazova\u0165 viac farebn\u00fdch odtie\u0148ov je teraz k dispoz\u00edcii REC 2100 <\/strong>s mo\u017enos\u0165ami HDR.<\/p>\n\n\n\n

<\/a>Porovnanie farebn\u00e9ho gamutu RGB, sRGB, NTSC, REC 2020 vs, SMYK<\/strong><\/h2>\n\n\n\n\n\n\n\t\n\n\t\n\t\n\t\n\t
color space<\/th>coverage % NTSC<\/th>coverege % sRGB<\/th>\n<\/tr>\n<\/thead>\n
NTCS<\/td>100<\/td>~72<\/td>\n<\/tr>\n
sRGB<\/td>~72<\/td>100<\/td>\n<\/tr>\n
Adobe RGB<\/td>~99<\/td>~117<\/td>\n<\/tr>\n
REC 2020<\/td>~150<\/td>~172<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n\n

Trochu o porovn\u00e1van\u00ed \u0161tandardov, NTCS zhruba zodpoved\u00e1 RGB. sRGB pokr\u00fdva pribli\u017ene 72 % NTSC a rovnako aj RGB. REC 2020 pokr\u00fdva o 50 % viac farebn\u00e9ho priestoru ako NTSC a takmer dvakr\u00e1t viac ako sRGB. Pomohlo by v\u0161ak, keby ste pochopili, \u017ee v\u0161etky tak\u00e9to porovnania s\u00fa relat\u00edvne. Venujte pozornos\u0165 farebnej h\u013abke svojho monitora alebo telev\u00edzora. Ak sa v popise uv\u00e1dza farebn\u00e1 h\u013abka 8 bitov, ide o lacn\u00fd monitor na pr\u00e1cu, 8 bitov plus dithering o nie\u010do lep\u0161ie, ale st\u00e1le ide o lacn\u00fa obrazovku; 10 bitov je vynikaj\u00faci profesion\u00e1lny monitor alebo pr\u00e9miov\u00fd telev\u00edzor.<\/p>\n\n\n\n

<\/a>\u0160tandardn\u00fd SMYK<\/strong><\/h2>\n\n\n\n

SMYK <\/strong>je farebn\u00fd model vyvinut\u00fd pre tla\u010diarne; v\u00fdrobcovia tla\u010diarn\u00ed sa v procese v\u00fdvoja farebn\u00fdch tla\u010diarn\u00ed rozhodli, \u017ee najkvalitnej\u0161iu fotografiu mo\u017eno vytla\u010di\u0165 pomocou nasleduj\u00facich farieb atramentu, az\u00farovej, purpurovej, \u017eltej a \u010diernej ako k\u013e\u00fa\u010da. Na obr\u00e1zku je zn\u00e1zornen\u00e9 vidite\u013en\u00e9 \u013eudsk\u00e9 spektrum, odtiene farieb a sp\u00f4sob, ak\u00fdm sa jednotliv\u00e9 \u0161tandardy prekr\u00fdvaj\u00fa s vidite\u013en\u00fdm spektrom.<\/p>\n\n\n\n

<\/a>Adobe RGB vs sRGB vs NTSC vs REC 2020 vs porovnanie farebn\u00e9ho modelu SMYK<\/strong><\/h2>\n\n\n
\n
\"\"<\/figure>\n<\/div>\n\n\n

Na obr\u00e1zku m\u00f4\u017eete vidie\u0165, ako s\u00fa r\u00f4zne farebn\u00e9 priestory navrstven\u00e9 na farebn\u00fa sch\u00e9mu. Ako som u\u017e povedal, m\u00f4\u017eete vidie\u0165, \u017ee sRGB m\u00e1 najmen\u0161ie pokrytie; RGB pokr\u00fdva farebn\u00fd priestor, ktor\u00fd vid\u00ed priemern\u00fd \u010dlovek. ProPhoto RGB je ur\u010den\u00fd pre profesion\u00e1lnych fotografov. CMYK je farebn\u00fd priestor pre tla\u010diarne.<\/p>\n\n\n\n

<\/a>sRGB-125%<\/em><\/strong><\/h2>\n\n\n\n

sRGB-125 % – <\/em><\/strong>monitor podporuje farebn\u00fd priestor sRGB (v\u0161etky monitory podporuj\u00fa sRGB) a pri zobrazovan\u00ed dok\u00e1\u017ee pokry\u0165 a\u017e o 25 % viac farebn\u00e9ho priestoru. Ako ch\u00e1pete tento marketing, ak je v popise monitora nap\u00edsan\u00e9, \u017ee podporuje 100 % RGB, je to \u0161tandard, ale ak nap\u00ed\u0161ete 125 % sRGB, podvedome m\u00e1 kupuj\u00faci pocit, \u017ee tento monitor je lep\u0161\u00ed.<\/p>\n\n\n\n

<\/a>Adobe RGB 92%<\/strong><\/h2>\n\n\n\n

Adobe RGB 92 % <\/strong>– monitor podporuje tento \u0161tandard a dok\u00e1\u017ee pokry\u0165 92 % farebn\u00e9ho priestoru tohto \u0161tandardu.<\/p>\n\n\n\n

Monitor podporuje tento \u0161tandard a dok\u00e1\u017ee pokry\u0165 92 % farebn\u00e9ho priestoru v \u0161tandarde RGB. Porovnanie so \u0161tandardom NTCS je ve\u013emi orienta\u010dn\u00e9 a sl\u00fa\u017ei len ako referencia.<\/p>\n\n\n\n

<\/a>NTSC vs sRGB<\/strong><\/h2>\n\n\n\n

Ako som povedal, sRGB je pribli\u017ene 72 % NTSC. To je d\u00f4vod, pre\u010do mnoh\u00ed v\u00fdrobcovia podv\u00e1dzaj\u00fa t\u00fdm, \u017ee vo svojich \u0161pecifik\u00e1ci\u00e1ch neuv\u00e1dzaj\u00fa podporu sRGB, ale NTSC m\u00e1 podporu 72 %, \u010do v\u00e4\u010d\u0161ina \u013eud\u00ed potrebuje pom\u00f4c\u0165 pochopi\u0165. \u010ci je to dobr\u00e9 alebo zl\u00e9, je na va\u0161om odhade. D\u00e1m v\u00e1m v\u0161ak n\u00e1povedu; tak\u00e9to monitory s\u00fa lacn\u00e9 monitory. 72 % NTSC = sRGB.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Spolo\u010dnosti s produktmi s\u00favisiacimi s tla\u010dou alebo v\u00fdvojom grafiky a spracovan\u00edm obrazu \u010delia potrebe \u0161tandardizova\u0165 farebn\u00e9 t\u00f3ny. Je to potrebn\u00e9 na spr\u00e1vne zobrazenie obrazu na monitoroch alebo pri tla\u010di. Preto boli vyn\u00e1jden\u00e9 r\u00f4zne normy. V\u00fdrobcovia monitorov, telev\u00edzorov a tla\u010diarn\u00ed uv\u00e1dzaj\u00fa, ktor\u00fd \u0161tandard podania farieb ich v\u00fdrobky podporuj\u00fa. Pokia\u013e ide o telev\u00edzory a monitory, v\u00fdrobcovia pou\u017e\u00edvaj\u00fa […]<\/p>\n","protected":false},"author":1,"featured_media":2828,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[1,86],"tags":[],"class_list":{"0":"post-2826","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-analytika","8":"category-technologia"},"_links":{"self":[{"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/posts\/2826","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/comments?post=2826"}],"version-history":[{"count":1,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/posts\/2826\/revisions"}],"predecessor-version":[{"id":2831,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/posts\/2826\/revisions\/2831"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/media\/2828"}],"wp:attachment":[{"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/media?parent=2826"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/categories?post=2826"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/tags?post=2826"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}