Ukusungula izinto ezintsha kuthelevishini ngeDolby Vision Technology
Intuthuko yethelevishini eminyakeni eyishumi edlule ihambe ngesivinini esikhulu. Ngenkathi ukuthuthukiswa kwekhwalithi yesithombe ngaphambili kwakugxile kakhulu ekuxazululeni—kusukela ku-SD kuya ku-HD, bese kuba yi-4K—ukunaka manje sekushintshele ezicini ezinquma kakhulu “umuzwa” obonakalayo: umbala, umehluko, kanye nemininingwane ezindaweni ezikhanyayo nezimnyama. Yilapho ubuchwepheshe be-High Dynamic Range (HDR) budlala khona indima ebalulekile, futhi enye yezindinganiso ze-HDR ezaziwa kakhulu futhi ezamukelwa kabanzi yi-Dolby Vision. Lobu buchwepheshe abugcini nje ngokwenza izithombe zibonakale zikhanya, kodwa kunalokho bunikeza ulwazi lokubuka olusondela kakhulu endleleni iso lomuntu elibona ngayo umhlaba wangempela.
Iyini i-Dolby Vision?
I-Dolby Vision ubuchwepheshe be-HDR obuthuthukiswe yi-Dolby Laboratories ukuthuthukisa ikhwalithi yesithombe ngokwenza ngcono ububanzi obuguqukayo, ukunemba kombala, kanye nokukhanya esikrinini. Ngokungafani ne-HDR "ejwayelekile", esebenzisa izilungiselelo ezijwayelekile, i-Dolby Vision isebenzisa umqondo we-metadata eguquguqukayo—ulwazi olutshela ithelevishini ukuthi ibonise kanjani kahle isigcawu ngasinye, ngisho nohlaka ngalunye.
Ngamanye amazwi, i-Dolby Vision akuyona nje "imodi yesithombe," kodwa isistimu ephatha indlela okuqukethwe okuhlelwe ngayo ngokwekhono lesikrini. Ngenxa yalokho, izigcawu ezimnyama zigcina imininingwane ngaphandle kokubukeka sengathi zigejiwe, kuyilapho izindawo ezikhanyayo njengelanga noma izibani ze-neon zihlala zibukhali ngaphandle kokuthi "ziqhume" (zimhlophe kakhulu futhi zilahlekelwe imininingwane).
Kungani i-HDR iyisinyathelo esikhulu kuthelevishini?
Abantu abaningi bacabanga ukuthi ikhwalithi yesithombe inqunywa kuphela yisisombululo. Kodwa-ke, ngisho nesisombululo se-4K singabonakala singenalutho uma ukungafani nombala kungaphathwa kahle. I-HDR, kufaka phakathi i-Dolby Vision, yandisa ububanzi phakathi kwamaphuzu amnyama nakhanyayo kakhulu ithelevishini engawabonisa. Lokhu kudala izithombe ezithi:
1. Okungokoqobo kakhudlwana: Ukushintshashintsha okukhanyayo nobumnyama kubukeka kungokwemvelo.
2. Imininingwane eyengeziwe: Ukuthungwa kwezithunzi noma amafu akhanyayo kubonakala kakhulu.
3. Icacile kakhulu: Imibala ibonakala icebile kodwa inembile.
Empeleni, i-HDR ivame ukuzwakala “imangalisa” kakhulu kunokuthuthukisa kusuka ku-1080p kuya ku-4K, ikakhulukazi uma ubuka ama-movie ane-cinematography enamandla.
Izinzuzo zeDolby Vision kune-HDR10
Ifomethi ye-HDR evame kakhulu emakethe yi-HDR10. I-Dolby Vision ivame ukubhekwa njengengcono ngenxa yezizathu eziningana ezibalulekile:
1. I-metadata enamandla
I-HDR10 isebenzisa imethadatha engaguquki, okusho ukuthi izilungiselelo ze-HDR zisetshenziswa kuyo yonke ifilimu noma isiqephu. I-Dolby Vision isebenzisa imethadatha eguquguqukayo, okuvumela ithelevishini ukuthi ilungise isibonisi ngokwesisekelo se-scene-by-scene noma i-frame-by-frame. Lokhu kubalulekile ngoba amafilimu avame ukuba nokukhanya okuhlukahlukene kakhulu: i-scene eyodwa ayicacile, bese elandelayo ikhanya kakhulu. Ukulungiswa okuguquguqukayo kuthuthukisa kokubili.
2. Kungenzeka ukuthi umbala ujule kakhulu
I-Dolby Vision yakhelwe ukusekela ukujula kombala okuphezulu (isb., ama-bit angu-12 ku-specification), okuholela ekulinganisweni kombala okubushelelezi kanye nokunciphisa ukujiya kwemibala (imigqa esibhakabhakeni noma ezithunzini). Nakuba amadivayisi amaningi abathengi okwamanje esasekela ama-bit angu-10, indinganiso ye-Dolby Vision inikeza uhlaka lwekhwalithi ehambisanayo.
3. Ukuthuthukiswa okuthuthukisiwe kwemephu yethoni
I-Tone mapping inqubo yokulungisa okuqukethwe kwe-HDR okwenzelwe amazinga athile okukhanya ukuze kufane namakhono e-TV yakho yasekhaya. I-Dolby Vision isiza ama-TV ukuthi enze i-tone mapping ngokunembe kakhudlwana, ukuqinisekisa ukuthi imininingwane evelele kanye neyomthunzi ayilahleki kalula.
I-Dolby Vision iyishintsha kanjani indlela yokubuka?
Imiphumela ye-Dolby Vision ibonakala kakhulu kokuqukethwe okune-contrast ephezulu, njengokuthi:
– Ifilimu yesayensi enezibani ze-neon nezikhala ezimnyama
– Izigcawu zasebusuku ezinemithombo emincane yokukhanya (izibani, amakhandlela)
- Ifilimu egqwayizayo enemibala ecebile
- Idokhumentari yemvelo enesibhakabhaka esikhanyayo kanye nemininingwane yesithunzi ezihlahleni
Kumabonakude osebenzisa i-Dolby Vision, ukukhanya okukhanyayo ebusweni bamanzi kungabonakala kukhazimula kakhulu ngenkathi kugcinwa imininingwane. Ngokuphambene nalokho, izigcawu ezimnyama aziguquki zibe amabhlogo amnyama; imininingwane yezingubo, izinwele, kanye nezizinda isafundeka. Lokhu kwenza indaba ibe lula ukuyilandela futhi izithombe zizizwe zigxile kakhulu.
Indima yeDolby Vision ohlelweni lwethelevishini lwanamuhla
I-Dolby Vision akuyona ubuchwepheshe obuzimele. Iyingxenye yesistimu yethelevishini yesimanje ehlanganisa:
1. Isikrini esinokukhanya okuphezulu kanye nokugqama okunamandla
Ukuze i-Dolby Vision ifeze ngempela, i-TV idinga ihadiwe enamandla: iphaneli enokukhanya okuphezulu kanye nokulawula ukukhanya okunembile. Ama-TV e-OLED avelele kakhulu kuma-deep black, kuyilapho ama-TV e-LED anokukhanya okuhle kwendawo enza kahle kakhulu ekukhanyeni. I-Dolby Vision ingasebenza kokubili, kodwa umphumela wokugcina usathonywa ikhwalithi yephaneli.
2. Ukusakaza okuqukethwe kanye nezinsizakalo
Amapulatifomu amaningi okusakaza anikeza okuqukethwe kwe-Dolby Vision, ikakhulukazi kwamafilimu avelele kanye nochungechunge. Kodwa-ke, ukutholakala kungahluka ngokwesifunda, uhlelo lokubhalisela, kanye nedivayisi yokudlala. Lokhu kusho ukuthi ukusungula i-Dolby Vision kusebenza kuphela uma lonke uchungechunge lokudlala seluqediwe: okuqukethwe okusekelayo, idivayisi esekelayo, kanye ne-TV esekelayo.
3. Amadivayisi omdlali kanye nokuxhumeka
Ngaphezu kwama-TV, amadivayisi afana namabhokisi okusakaza, ama-console, noma abadlali be-Blu-ray nawo adinga ukusekela i-Dolby Vision. Kwezinye izimo, i-TV isekela i-Dolby Vision kodwa isidlali asisekeli, ngakho-ke ifomethi ye-HDR esetshenzisiwe ingase yehliswe ibe yi-HDR10.
Izinselele nezinto okufanele uzinake
Nakuba i-Dolby Vision inikeza izinzuzo eziningi, kunezinto ezibalulekile okufanele uziqonde:
1. Akuzona zonke izinto ezibonakala zingcono ngokuzenzakalelayo
Uma okuqukethwe kungakhiqizwanga ngokukala kwe-HDR kwekhwalithi ephezulu, imiphumela ingaba mincane kakhulu. I-Dolby Vision iyasiza, kodwa "ngomlingo" ayiguquli izinto ezingaphansi kwekhwalithi zibe yikhwalithi ephelele.
2. Umehluko ngekhwalithi phakathi kwama-TV
Ama-TV amabili asekela i-Dolby Vision angabonisa imiphumela ehlukene ngenxa yokwehluka kwamaphaneli, amaprosesa ezithombe, kanye namazinga okukhanya.
3. Izilungiselelo ezifanele zesithombe nemodi
Izindlela zezithombe ezicutshungulwe ngokweqile (njengokugcwala ngokweqile noma ukucaca okuphezulu) zinganciphisa izinzuzo zeDolby Vision. Ama-TV amaningi anikeza izindlela ze-“Cinema” noma ze-“Filmmaker” ezibonisa ngokuseduze inhloso yomdali.
Ikusasa lethelevishini: ikhwalithi yesithombe "esihlakaniphe kakhulu"
I-Dolby Vision iphawula indlela entsha yokusungula izinto ezintsha kuthelevishini: hhayi nje ngezincazelo zezinombolo, kodwa mayelana nokumaka izithombe ngobuhlakani ukuze kuthuthukiswe okuqukethwe kumadivayisi ahlukahlukene. Ukuya phambili, sizobona ukuhlanganiswa okuqinile phakathi:
- I-HDR ene-metadata enamandla
- Ukwenyuswa kwe-AI kokuqukethwe okungeyona eye-4K
- Izilungiselelo zesithombe ezivumelana nezimo ngokusekelwe ezimweni zegumbi
- Izindinganiso zokukhiqiza okuqukethwe ezihlala zihambisana
Kulowo mongo, iDolby Vision iyisibonelo sendlela ubuchwepheshe obungawuvala ngayo igebe phakathi kwesitudiyo (lapho okuqukethwe kudalwe khona kumamonitha ochwepheshe) kanye negumbi lokuphumula (lapho ama-TV enamakhono ahlukahlukene).
Isiphetho
Ukusungulwa kwethelevishini ngobuchwepheshe beDolby Vision kubonisa ukuthi ikhwalithi yokubuka ayisanqunywa kuphela yisisombululo. I-Dolby Vision iletha i-HDR eguquguqukayo ngokusebenzisa i-metadata enamandla, imephu yethoni ethuthukisiwe, kanye nokusekelwa kombala nokuqhathanisa okucebile. Ngokuqukethwe okulungile namadivayisi asekelayo, umuzwa wokubuka uba mnandi kakhulu, ube ngokoqobo, futhi uthembeke embonweni womdali.
Ekugcineni, i-Dolby Vision ayigcini nje ngezithombe ezikhanyayo noma imibala egqamile, imayelana nendlela omabonakude besimanje abangabonisa ngayo imininingwane kanye nezici zokukhanya ngokunembile—okwenza isikrini sizizwe siseduze nendlela esibona ngayo umhlaba wangempela.
