HDR vs SDR: Itandukaniro irihe?HDR ikwiye gushora imari?
Wigeze wumva ibya HDR?Muri iki gihe HDR yagiye igaragara ahantu hose mubuzima bwacu kandi dushobora kubona ibintu bya HDR bikora mobile, kamera, serivise zitanga amakuru nka YouTube, Netflix, cyangwa 4K UHD Blu-ray DVD.None, HDR ni iki?Bitandukaniye he na SDR?Kuki ari ngombwa kuri wewe?Iyi ngingo izasubiza ibibazo byawe byose.
Ibirimwo:
Igice cya 1: HDR na SDR ni iki?
Igice cya 2: HDR na SDR Ugereranije
Igice cya 3: Ibipimo bibiri byingenzi bya HDR: Icyerekezo cya Dolby, HDR10 na HDR10 +
Igice cya 4: Igenamiterere ryawe rirashobora gukina HDR?
Igice cya 5: Birakwiye Kuzamura HDR?
Igice cya 6: Byagenda bite niba 4K HDR isa neza kandi yogejwe mugihe ukina?
Igice cya 1: HDR na SDR ni iki?
SDR, cyangwa Standard Dynamic Range, nuburyo bugezweho bwa videwo na sinema.SDR isobanura amashusho cyangwa videwo ukoresheje ibimenyetso bisanzwe bya gamma curve.Imirongo isanzwe ya gamma yari ishingiye kumipaka ya cathode ray tube (CRT) itanga urumuri ntarengwa rwa 100 cd / m2.
HDR, uhagaze kuri High Dynamic Range, nubuhanga bwo gufata amashusho bufata, butunganya, kandi bukabyara ibintu muburyo burambuye bwaigicucu nicyerekezo cyibanze byiyongereye.Mugihe HDR yakoreshejwe mumafoto gakondo kera, iherutse gukora gusimbuka kuri terefone zigendanwa, TV, monitor, nibindi byinshi.
Igice cya 2: HDR na SDR Ugereranije: Itandukaniro riri hagati ya HDR na SDR
SDR igarukira kubushobozi bwayo bwo kwerekana gusa agace k'urwego rugaragara HDR ishoboye.HDR ibika amakuru arambuye aho ikigereranyo cyo gutandukanya monite gishobora kuba imbogamizi.SDR, kurundi ruhande, ibura ubu bushobozi.Ikinyuranyo kinini kinini kiri murwego rwamabara gamut nubucyo.Urabizi, SDR yemerera ibara gamut ya sRGB nubucyo kuva 0 kugeza 100nits.Mugihe HDR ifite ibara ryagutse rigera kuri DCI - P3, urumuri rwo hejuru rwumucyo nurumuri rwo hasi rwijimye.Mugihe kimwe, itezimbere ubwiza bwibishusho muri rusange mubitandukanye, imiterere yikigina nizindi ntera, bizana uburambe bwibintu byinshi kubimenyereye.
Kubivuga mu buryo bworoshye, mugihe ugereranije HDR na SDR, HDR igufasha kubona byinshi birambuye hamwe nibara mumashusho hamwe nurwego rwo hejuru.Ibyo bivuze ko HDR yaka kurusha SDR.HDR igufasha kubona byinshi birambuye hamwe namabara mumashusho.HDR isumba iyi ngingo:
◉ Umucyo:HDR itanga umucyo hejuru ya 1000 nits no munsi ya 1 nit.
Gamut amabara:Ubusanzwe HDR ifata P3, ndetse na Rec.2020 gamut.SDR ikoresha Rec.709 muri rusange.
Deep Ubujyakuzimu bw'amabara:HDR irashobora kuba muri 8-bit, 10-bit na 12-biti y'ubujyakuzimu.Mugihe SDR isanzwe iri muri 8-bit, kandi bake cyane bakoresha 10-bit.
Igice cya 3: Ibipimo bibiri byingenzi bya HDR: Icyerekezo cya Dolby, HDR10 na HDR10 +
Mubyukuri, nta gisobanuro cyanyuma cyibipimo bya HDR.Hano hari amahame abiri akomeye akoreshwa muri iki gihe, Dolby Vision na HDR10.Byongeye kandi, imiterere mishya ya HDR10 +, igamije kumenyekanisha HDR ifite imbaraga kurwego rwa HDR10 mugihe hasigaye ubwami.Tuzajya muburyo butandukanye hagati yuburyo bubiri bwa HDR bukurikira.
Icyerekezo cya Dolby
Dolby Vision nigipimo cya HDR gisaba monitori kuba yarateguwe byumwihariko hamwe na chip ibyuma bya Dolby Vision.Hariho amafaranga yubwami ya Dolby Vision, hafi $ 3 kuri buri TV.Kimwe na HDR10, Dolby Vision ikoresha Rec.2020 ubugari bwamabara ya gamut, 1000 nits yumucyo, ariko ifata uburebure bwa 12-biti kandi igashyigikira imiterere yibintu.
HDR10
HDR10 ni igipimo gifunguye, kandi ntugomba kwishyura amafaranga yimisoro kugirango uyikoreshe.Umubare “10 ″ ugereranya uburebure bwa 10bit.Usibye ibi, HDR10 irasaba kandi gukoresha gamut yagutse Rec.2020, 1000 nits yumucyo, nuburyo bwo gutunganya amakuru ahamye.
HDR10 nigipimo cya HDR gikunze kugaragara cyane hafi yinganda zose zikomeye za TV hamwe nabatanga amakuru, nka Sony, Disney, 20 Century Fox, Warner Bros., Paramount, Universal, na Netflix bemeza HDR10 kugirango bakore disiki ya 4K UHD Blu ray.Usibye, ibikoresho nka Xbox One, PS4, Apple TV nayo ishyigikira HDR10.
HDR10 vs Dolby Vision - Itandukaniro irihe?
HDR10 na Dolby Vision nuburyo bubiri nyamukuru bwa HDR.Itandukaniro nuko HDR10 ari ifunguye-risanzwe kandi ridafite umutungo, mugihe Dolby Vision isaba uruhushya n'amafaranga atangwa na Dolby.
Mugihe muri iki gihe Dolby Vision ishoboye gutanga ubuziranenge bwibishusho, nta TV zishobora gukoresha neza ibyo itanga bitandukanye na HDR10.
Nyamara, Dolby Vision itanga ubuziranenge bwamashusho, cyane cyane kubera metadata ikora.
HDR10 +
Nkuko byavuzwe haruguru, hariho ubundi buryo bwa HDR10 +.HDR10 + ni HDR isanzwe yashyizweho na Samsung kuri Dolby Vision, ihwanye na Vision y'ubwihindurize ya HDR10.Kimwe na Dolby Vision, HDR10 + ishyigikira imiterere yamakuru yimikorere, ariko HDR10 + nigipimo gifunguye, igamije kubona uburambe bwiza bwamajwi-amashusho kubiciro biri hasi.
Kuri ubu, HDR10 nuburyo buhenze kandi bukoreshwa cyane, mugihe Dolby Vision aribwo buryo bwiza.Mugihe cyo kwandika iyi nyandiko, DR10 + iboneka gusa kuri serivise nkeya (harimo na Amazone) na disiki, ariko TV nyinshi kandi nyinshi zitangiye gushyigikira HDR10 +.
Igice cya 4: Igenamiterere ryawe rirashobora gukina HDR?
Umaze kubona ibikubiyemo bya HDR byerekanwe, byaba amashusho ya HDR cyangwa umukino wa HDR, ugomba kwemeza ko igenamiterere ryawe rishobora kwerekana ibyo HDR.
Intambwe yambere nukureba neza ko ikarita yawe ishushanya ishyigikira HDR.
HDR irashobora kwerekanwa hejuru ya HDMI 2.0 na DisplayPort 1.3.Niba GPU yawe ifite kimwe muri ibyo byambu noneho igomba kuba ishobora kwerekana ibiri muri HDR.Nkuko bisanzwe bigenda, urutonde rwa Nvidia 9xx zose za GPU nizindi nshya zifite icyambu cya HDMI 2.0, kimwe namakarita ya AMD yose kuva 2016.
Mugihe ibyerekanwa byawe bigenda, ugomba kwemeza neza ko nabyo bishoboye gushyigikira ibirimo HDR.Iyerekana rya HDR rigomba kuba rifite byibura HD yuzuye ya 1080p.Ibicuruzwa nka Asus ROG Swift PG27UQ, Acer Predator X27, Alienware AW5520QF ni ingero za monitor ya 4K hamwe nibisobanuro bya HDR10.Izi monitor zirerekana kandi ibara ryukuri muburinganire mugushaka kwemeza ko amashusho kuri ecran asa nkukuri mubuzima bushoboka.
Nigute Wabona Ibirimo HDR
Kubijyanye no gutambuka, Netflix na Amazon Prime bishyigikira HDR kuri Windows 10. Kubijyanye nibindi HDR, Sony, Disney, Century Fox ya 20, Warner Bros., Paramount, Universal, na Netflix bose bakoresha HDR10 kugirango bakore ibintu 4K UHD Blu ray muri disiki.Cyangwa urashobora kwandika ibyawe 4K HDR hamwe na mobile, GoPro, DJI, kamera nibindi.
Igice cya 5: Birakwiye Kuzamura HDR?
Niba utekereza gusimbuka HDR, ushobora kwibaza: HDR ishoramari ryiza?Ese tekinoroji ya Dynamic Range izatangira?
Nubwo byanze bikunze, ntakintu na kimwe gihinduka 100%, tekinoroji ya HDR ifite amahirwe mubyiza byayo.Kugeza ubu, ikoranabuhanga ryarwo rifitanye isano rya hafi n’ibisubizo birenze urugero, ubundi bizwi nka 4K.
Kubera ko 4K irimo gukoreshwa nisoko rusange muburyo bworoshye kandi bwihuse, birumvikana ko HDR izakurikira inzira imwe igana imbere.Turashobora kugereranya HDR na SDR umunsi wose ariko niba HDR ari nziza kuri wewe amaherezo izamanuka mubyakubayeho.Kuri ubu, umva neza gushakisha urutonde rwa ViewSonic ya monitor ya HDR ihuza na monitor ya ColorPro kandi cyangwa wibire cyane mwisi yo gukosora amabara no gutondekanya amabara.
Kubwamahirwe kubantu bose babitangira hakiri kare, ibicuruzwa bya HDR ntabwo bigoye kuza.Ibyiza bya HDR ndetse bigera no mumikino ikwemerera kubona ibisobanuro birambuye mumikino yawe kugirango wumve neza.
Bite ho Niba 4K HDR isa neza kandi yogejwe mugihe ukina?
Ugereranije na SDR (urwego rusanzwe rwa dinamike), HDR irashobora gukora amashusho yawe neza kandi nkubuzima bwose bitewe nurwego runini rwamabara nuburebure.Nyamara, nta kintu na kimwe gitunganye.Nubwo ibicuruzwa bya videwo 4K HDR bigurishwa cyane, TV za SDR zitabarika, monitor, umushinga, desktop na terefone biracyakoreshwa.
Hano rero haraza ikibazo: iyo urebye 4K HEVC HDR 10-bit ya videwo kuri HDR yerekana idashyigikiwe, videwo ya HDR izabura ibara ryumwimerere kandi itesha agaciro ibara ryuzuye & kwiyuzuzamo.Ishusho yose ya videwo yahinduka imvi.Nibyo dukunze kwita ibara ryogejwe.
Mu rwego rwo gukina amashusho ya HDR 10-biti ku bikoresho bya SDR, ugomba kubanza guhindura HDR muri SDR kugirango ukureho ikibazo cyamabara yogejwe.KandiGuhindura amashusho ya EaseFabni bumwe mu buryo bwo hejuru bwohindura amashusho yose ya 4K HDR kuri SDRmuri 4K / 1080p, HEVC kugeza H.264 nta gutakaza ubuziranenge bugaragara kumucyo, ibara, itandukaniro nibindi.Wige byinshi kubyingenzi byingenzi:
. Emera ubwoko bwose bwa videwo ya 4K HDR, aho yaturuka hose nuburyo bwa kodegisi bakoresha.
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Igihe cyo kohereza: Kanama-26-2021