Zatsopano mu Televizioni ndi Dolby Vision Technology
Zochitika pa wailesi yakanema m'zaka khumi zapitazi zapita patsogolo kwambiri. Ngakhale kuti kusintha kwa khalidwe la zithunzi kale kunkayang'ana kwambiri pa kusinthika kwa zithunzi—kuchokera ku SD kupita ku HD, kenako kupita ku 4K—tsopano chidwi chasamukira ku zinthu zomwe zimatsimikizira kwambiri “kumveka” kwa zithunzi: mtundu, kusiyana, ndi tsatanetsatane m'malo owala ndi amdima. Apa ndi pomwe ukadaulo wa High Dynamic Range (HDR) umagwira ntchito yofunika kwambiri, ndipo imodzi mwa miyezo yodziwika bwino komanso yodziwika bwino ya HDR ndi Dolby Vision. Ukadaulo uwu sumangopangitsa kuti zithunzi ziwoneke zowala, koma umapereka chidziwitso chowonera chomwe chimafanana kwambiri ndi momwe diso la munthu limaonera dziko lenileni.
Kodi Dolby Vision ndi chiyani?
Dolby Vision ndi ukadaulo wa HDR wopangidwa ndi Dolby Laboratories kuti uwonjezere ubwino wa chithunzi mwa kukonza mtundu wa dynamic range, kulondola kwa mitundu, ndi kuwala pazenera. Mosiyana ndi HDR "yokhazikika", yomwe imagwiritsa ntchito makonda ambiri, Dolby Vision imagwiritsa ntchito lingaliro la dynamic metadata—chidziwitso chomwe chimauza wailesi yakanema momwe angawonetse bwino chithunzi chilichonse, ngakhale chimango chilichonse.
Mwa kuyankhula kwina, Dolby Vision si "njira yongojambula zithunzi," koma ndi njira yomwe imawongolera momwe zomwe zili mkati zimagwirizanirana ndi luso la sikirini. Zotsatira zake, malo amdima amasunga tsatanetsatane popanda kuwoneka ngati atayika, pomwe malo owala monga kuwala kwa dzuwa kapena magetsi a neon amakhalabe owala popanda "kuphulika" (oyera kwambiri ndikutaya tsatanetsatane).
N’chifukwa chiyani HDR ndi chinthu chofunika kwambiri pa TV?
Anthu ambiri amaganiza kuti khalidwe la chithunzi limadalira kokha mawonekedwe. Komabe, ngakhale mawonekedwe a 4K amatha kuwoneka osasinthasintha ngati kusiyana ndi mtundu sizikuyang'aniridwa bwino. HDR, kuphatikiza Dolby Vision, imakulitsa kusiyana pakati pa malo amdima komanso owala kwambiri omwe wailesi yakanema ingawonetse. Izi zimapanga zithunzi zomwe:
1. Zoona zenizeni: Kusintha kwa kuwala ndi mdima kumawoneka mwachilengedwe.
2. Tsatanetsatane: Kapangidwe kake mu mithunzi kapena mitambo yowala kamawonekera bwino.
3. Zowoneka bwino kwambiri: Mitundu imawoneka yokongola koma yolondola.
Mwachizolowezi, HDR nthawi zambiri imamveka ngati "yodabwitsa" kuposa kukweza kuchokera ku 1080p kupita ku 4K, makamaka mukaonera makanema okhala ndi kanema wamphamvu.
Ubwino wa Dolby Vision kuposa HDR10
Mtundu wa HDR wodziwika kwambiri pamsika ndi HDR10. Dolby Vision nthawi zambiri imaonedwa kuti ndi yabwino pazifukwa zingapo zazikulu:
1. Zambiri za data (dynamic metadata)
HDR10 imagwiritsa ntchito metadata yosasinthasintha, zomwe zikutanthauza kuti makonda a HDR amagwiritsidwa ntchito mufilimu yonse kapena gawo lonse. Dolby Vision imagwiritsa ntchito metadata yosinthasintha, zomwe zimathandiza wailesi yakanema kusintha chiwonetserocho pa malo ndi malo kapena chimango ndi chimango. Izi ndizofunikira chifukwa mafilimu nthawi zambiri amakhala ndi kusiyana kwakukulu kwa kuwala: gawo limodzi ndi lofooka, kenako lotsatira ndi lowala kwambiri. Kusintha kwamphamvu kumawongolera zonse ziwiri.
2. Kuthekera kwa kuya kwa utoto kwambiri
Dolby Vision yapangidwa kuti ithandizire kuzama kwa mitundu (monga 12-bit mu specification), zomwe zimapangitsa kuti mitundu ikhale yosalala komanso kuti ikhale yochepa (mizere mumlengalenga kapena mumthunzi). Ngakhale kuti zipangizo zambiri zomwe zimagwiritsidwa ntchito pakali pano zikuthandizirabe 10-bit, muyezo wa Dolby Vision umapereka chimango cha mtundu wokhazikika.
3. Kukonza bwino kwambiri mapu a mawu
Kujambula ma toni ndi njira yosinthira zomwe zili mu HDR zomwe zimapangidwa kuti zigwirizane ndi mphamvu za TV yanu yakunyumba. Dolby Vision imathandiza ma TV kuchita kujambula ma toni molondola, kuonetsetsa kuti tsatanetsatane wa mawonekedwe ndi mithunzi sizitayika mosavuta.
Kodi Dolby Vision imasintha bwanji momwe imawonera?
Zotsatira za Dolby Vision zimawonekera kwambiri pazinthu zomwe zili ndi kusiyana kwakukulu, monga:
- Filimu ya sayansi yokhala ndi magetsi a neon ndi malo amdima
- Zochitika zausiku zokhala ndi magwero ang'onoang'ono a nyali (nyali, makandulo)
- Kanema wojambulidwa wokhala ndi mitundu yambiri
- Nkhani yachilengedwe yokhala ndi thambo lowala komanso tsatanetsatane wa mthunzi m'mitengo
Pa TV yoyendetsedwa ndi Dolby Vision, kuwala komwe kumaonekera pamwamba pa madzi kumatha kuoneka kowala kwambiri pamene kumasunga tsatanetsatane. Mosiyana ndi zimenezi, zochitika zakuda sizimasanduka zidutswa zakuda; tsatanetsatane wa zovala, tsitsi, ndi maziko ake akadali osavuta kuwerenga. Izi zimapangitsa kuti nkhaniyo ikhale yosavuta kutsatiridwa ndipo zithunzi zake zimakhala zozama kwambiri.
Udindo wa Dolby Vision mu dongosolo lamakono la wailesi yakanema
Dolby Vision si ukadaulo wodziyimira pawokha. Ndi gawo la dongosolo lamakono la wailesi yakanema lomwe limaphatikizapo:
1. Chinsalu chowala kwambiri komanso chosiyana kwambiri
Kuti TV ikwaniritse bwino Dolby Vision, imafunika zida zamphamvu: gulu lowala kwambiri komanso lowongolera bwino kuwala. Ma TV a OLED amagwira ntchito bwino kwambiri pakuda kwambiri, pomwe ma TV a LED okhala ndi kuwala kwabwino kwapafupi amagwirira ntchito bwino pa kuwala. Dolby Vision imatha kugwira ntchito ndi zonse ziwiri, koma zotsatira zake zimakhudzidwabe ndi mtundu wa gululo.
2. Kuwonera zomwe zili ndi ntchito
Mapulatifomu ambiri owonera makanema amapereka zomwe zili mu Dolby Vision, makamaka pa mafilimu ndi mndandanda. Komabe, kupezeka kumatha kusiyana malinga ndi dera, dongosolo lolembetsa, ndi chipangizo chosewerera. Izi zikutanthauza kuti ukadaulo wa Dolby Vision umagwira ntchito pokhapokha ngati unyolo wonse wosewerera watha: zomwe zikuthandizira, chipangizo chothandizira, ndi TV yothandizira.
3. Zipangizo zosewerera ndi kulumikizana
Kuwonjezera pa ma TV, zipangizo monga ma streaming box, ma consoles, kapena osewera a Blu-ray zimafunikanso kuthandizira Dolby Vision. Nthawi zina, TV imathandizira Dolby Vision koma wosewerayo satero, kotero mtundu wa HDR womwe umagwiritsidwa ntchito ungatsitsidwe kukhala HDR10.
Mavuto ndi zinthu zofunika kuziganizira
Ngakhale kuti Dolby Vision imapereka zabwino zambiri, pali zinthu zofunika kuzimvetsa:
1. Sizinthu zonse zomwe zimawoneka bwino zokha
Ngati zomwe zili mkati sizikupangidwa ndi ma HDR abwino kwambiri, zotsatira zake zingakhale zosakwanira. Dolby Vision imathandiza, koma "mwamatsenga" siisintha zinthu zosakwanira kukhala zabwino kwambiri.
2. Kusiyana kwa khalidwe pakati pa ma TV
Ma TV awiri omwe onse amathandizira Dolby Vision amatha kuwonetsa zotsatira zosiyana chifukwa cha kusiyana kwa mapanelo, ma processor azithunzi, ndi kuchuluka kwa kuwala.
3. Makonda oyenera a chithunzi ndi mawonekedwe
Ma mode a zithunzi okonzedwa mopitirira muyeso (monga kukhuta kwambiri kapena kuthwa kwambiri) angachepetse ubwino wa Dolby Vision. Ma TV ambiri amapereka ma mode a “Cinema” kapena “Filmmaker” omwe amawonetsa bwino cholinga cha wopanga.
Tsogolo la wailesi yakanema: khalidwe la zithunzi "zanzeru" likuchulukirachulukira
Dolby Vision ikuyimira njira yatsopano yopangira zatsopano pa wailesi yakanema: osati kungokhudza ziwerengero zokha, komanso kujambula zithunzi mwanzeru kuti zikonze zomwe zili pazida zosiyanasiyana. Kutsogolo, tiwona kulumikizana kwamphamvu pakati pa:
- HDR yokhala ndi metadata yosinthika
- Kukweza kukula kwa AI pazinthu zomwe sizili za 4K
- Zokonzera zithunzi zosinthika kutengera momwe chipinda chilili
- Miyezo yokhazikika yopangira zinthu
Pankhaniyi, Dolby Vision ndi chitsanzo cha momwe ukadaulo ungagwirizanitse kusiyana pakati pa studio (komwe zinthu zimapangidwa pa ma monitor aukadaulo) ndi chipinda chochezera (komwe ma TV ali ndi kuthekera kosiyanasiyana).
Mapeto
Zatsopano pa wailesi yakanema pogwiritsa ntchito ukadaulo wa Dolby Vision zikuwonetsa kuti mawonekedwe abwino samangodalira mphamvu yokha. Dolby Vision imapereka HDR yosinthika kwambiri kudzera mu metadata yosinthika, mapu apamwamba a mawu, komanso chithandizo chamitundu ndi kusiyana kwa mitundu. Ndi zomwe zili zoyenera komanso zida zothandizira, mawonekedwe owonera amakhala ozama kwambiri, enieni, komanso okhulupirika ku masomphenya a wopanga.
Pomaliza, Dolby Vision sikuti imangokhudza zithunzi zowala kapena mitundu yowala kwambiri, koma ikunena za momwe ma TV amakono angawonetsere bwino tsatanetsatane ndi mawonekedwe opepuka—kupangitsa kuti sikirini izimveka bwino kwambiri momwe timaonera dziko lenileni.
