4k Ultra HD kusamvana – kufotokozera, zabwino ndi zoyipa, ndi zingati mu pixels

Kusamvana ndichinthu chofunikira kwambiri pa TV ndi kanema. Imatanthawuza kuwerengera kwa pixel ndi malo opingasa komanso ofukula. Kukhazikika kwapamwamba, kumveka bwino, kufotokozera mwatsatanetsatane chithunzi chomwe chajambulidwa pafoni. Opanga ma TV amangosonyeza manambala opingasa. Mwachitsanzo, kusamvana kwa 4k kumatanthauza kusamvana kwa kanema wa digito ndi zithunzi zamakompyuta. Imafanana ndi ma pixel 4000 mopingasa.

4k kusamvana – kufotokozera muyezo

Nkhawa yaku Japan NHK yapanga mulingo wa UHDTV wagawo loyankhulirana. Idakhazikitsidwa mu 2012 pamisonkhano ya International Telecommunication Union. Kusamvana kwakukulu kunali mapikiselo a 3840×2160. Adadziwika kuti Ultra HD. Makanema apa TV adatha kupeza chiwongolero chamitundu yayikulu. Inakhala yofanana ndi malo a 16:9. Masiku ano, muyezo uwu ndi umodzi mwazomwe anthu amakumana nazo komanso kugula. M’makampani opanga mafilimu, amatchedwa 4K chifukwa m’lifupi mwake chimango chakhala ma pixel 4000. N’zochititsa chidwi kuti opanga wailesi yakanema saganiza kuti ayimire pamenepo. [id id mawu = “attach_2731” align = “aligncenter” wide = “669”]
Zosankha zokhazikika[/caption] Kuti mumvetsetse kanema wotanthauzira kwambiri, muyenera kulingalira chinsalu cha mamita 15. Chithunzi chomwe chili pamenepo chikhalabe chomveka bwino chofanana ndi cha pa TV wamba. Pulojekiti ya kanema wa digito imangothandizira kusamvana kwa 2k. Thandizo la mtundu wa quad lili pa IMAX. Kutanthauziridwa kuchokera ku Chingelezi chotsatsa, ichi ndi mtundu wapamwamba kwambiri wazithunzi. Kwa muyezo, mapurojekitala angapo okhala ndi lingaliro kanayi amagwiritsidwa ntchito. 4k imatanthawuza kumveka bwino komanso tsatanetsatane wa chithunzicho, chomwe chimafalitsidwa bwino komanso chodzaza. Kuchulukana ndi zenizeni za chithunzi kumakula chifukwa cha kuchepetsa kukula kwa pixel ndikuwonjezeka kwa chiwerengero chawo. Zotsatira zake, zinthu zimafotokozedwa mwatsatanetsatane mu autilaini ndipo zitha kuwonedwa bwino. Poyerekeza ndi 2k, 4k imapereka mawonekedwe abwino, kuya kwa mtundu ndi khalidwe la mawu. UHD imagwiritsa ntchito mtengo wa chimango. Mtundu uli ndi kuya kwa 12 bits, ndipo kuphimba kwamtundu ndi 75%. Seweroli limapanganso mithunzi pafupifupi 69,000,000,000 ya utoto. Kuti mumvetse bwino, mitundu yapamwamba ya Full HD imasintha mafelemu pa liwiro la 60 kiloseconds. Mtundu ndi ma bits 8, ndipo malo amtundu amaphimba chophimba ndi 35%.

Kusiyana pakati pa 4K ndi 2K kusamvana

Ma HDTV akhala akugwiritsidwa ntchito kwazaka zambiri. Masiku ano, palibe zida zapa TV zomwe siziwonetsa 720p resolution. “P” imayimira chithunzi chopita patsogolo. Ine ndi njira ina, yosonyezedwa interlaced. Mizere yosamvetseka komanso yofanana ikuwonetsedwa mosinthana pazithunzi zilizonse. Izi zimapangitsa kuti chithunzicho chiwonongeke. Mawu akuti ma pixel 4000 ndi mawonekedwe owonetsera omwe ali ndi mawonekedwe opingasa. UHD ndi 4k. Kusiyana kwake ndikuti ndikoyenera kwambiri kwa ogula ndi kanema wawayilesi wokhala ndi 2k. Zotsatira zake, DCI imatengedwa ngati mulingo waukadaulo wopanga, wovoteledwa pa 4096 x 2160 pixels. UHD ndi muyezo wokhala ndi mapikiselo a 3840 x 2160. Pali 8k mtundu pa 7620 x 4320 mapikiselo. Zimapereka chithunzi chopanda cholakwika.

Ubwino ndi kuipa kwa 4k kusamvana pamene ntchito pa TV

Kusintha kwa 4k kumapereka tsatanetsatane wazithunzi zomveka bwino pakuchulukitsa kachulukidwe ka pixel pa skrini lalikulu mamilimita. Kusesa kwake ndi mafelemu 120 pa sekondi iliyonse. Chithunzi chowoneka bwino choterechi chimapangitsa kuti maso asamavutike kwambiri, makamaka ngati munthu amawonera kanema wawayilesi kwa nthawi yayitali komanso ola lililonse. 4k kusamvana kumatulutsa mitundu yosiyanasiyana yakuya, yolemera. Imawonjezera kumveka bwino kwazithunzi m’malo owala komanso amdima pazenera. Mtunduwu umapereka mtundu wabwino kwambiri wamawu. Ubwino wosakayikitsa wa ogwiritsa ntchito ma Ultra HD TV ndi awa:

1. Mtundu angagwiritsidwe ntchito widescreen kanema masewera, kompyuta matrices; Chophimbacho chimakulowetsani mu zenizeni zenizeni popanda magalasi apadera.
2. Matrix amapanga chithunzi chamitundu itatu chomwe wowonera amawunika kuyambira nthawi iliyonse; pa stereo simufuna magalasi.
3. TV ikhoza kuwonedwa patali pang’ono, izi zimachitika chifukwa cha kuwonjezeka kanayi kwa chithunzi cha skrini.

Ubwino wake ndi nthawi yoti muyike TV munyumba yaying’ono yokhala ndi zipinda zocheperako.

Choyipa chachikulu cha kusamvana kwa 4k ndichofunikira pakuwonjezeka kwa chizindikiro. Izi zimapangitsa kuti pakhale zochepa zomwe zimafalitsidwa mumtundu wogwiritsidwa ntchito. Pali apadera mafilimu ndi ziwonetsero pa YouTube kuti angagwiritsidwe ntchito pa 4k zitsanzo. Pa Netflix pali makanema omwe ali ndi mndandanda wokhala ndi zolipira zolipira, zodula. Megogo ali ndi zambiri zotanthauzira zapamwamba.

Ma TV omwe amagwiritsa ntchito 4k

4K kusamvana ndi imodzi mwapamwamba kwambiri komanso momveka bwino. Chifukwa chake, mutha kuwonera mapulogalamu a pa TV momveka bwino. Ubwino wa kusamvana uku ndikusiyana kwakukulu ndi tsatanetsatane wazithunzi, kupanga mawonekedwe a 3D popanda kugwiritsa ntchito magalasi apadera. Masiku ano, 4K resolution ikupezeka m’ma TV otsatirawa: Xiaomi Mi TV 4S65 T2S 65, LG 43UM7020 43, Samsung UE43TU8000U, Samsung UN78KS9800, LG 43UK6200, LG 50UN73506LB, BBK 46C20 UTS / UE43TU8000U. Ndikoyenera kunena kuti ma TV onse okhala ndi 4k ali ndi dongosolo la “anzeru” lomwe limapangitsa kuti muwone mavidiyo, zithunzi ndi kugwiritsa ntchito intaneti, mapulogalamu ndi masewera. Chifukwa cha mgwirizano wachindunji wa omwe akupanga muyezo ndi opanga, ogula, pamapeto pake, amapeza zinthu zabwino kwambiri. Bonasi kwa ogwiritsa ntchito ndi mwayi wopeza mafilimu abwino nthawi yomweyo omwe amawulutsidwa m’makanema. Kuti mumvetsetse kuthekera kwa ma TV a 4k, zinthu zina ziyenera kukwaniritsidwa. Chipangizocho chiyenera kukhala ndi diagonal yotakata. Iyenera kukhala ndi kuwulutsa kwapa TV kwa 4k ndi kuwulutsa kwa data yomwe ilipo. Pamapeto pake, munthu adzalandira moyo wokhala ndi chithunzi chazithunzi zitatu, momwe mitundu imafalikira yowutsa mudyo, mwachilengedwe. [id id mawu = “attach_2323” align = “aligncenter” wide = “511”] Iyenera kukhala ndi kuwulutsa kwapa TV kwa 4k ndi kuwulutsa kwa data yomwe ilipo. Pamapeto pake, munthu adzalandira moyo wokhala ndi chithunzi chazithunzi zitatu, momwe mitundu imafalikira yowutsa mudyo, mwachilengedwe. [id id mawu = “attach_2323” align = “aligncenter” wide = “511”] Iyenera kukhala ndi kuwulutsa kwapa TV kwa 4k ndi kuwulutsa kwa data yomwe ilipo. Pamapeto pake, munthu adzalandira moyo wokhala ndi chithunzi chazithunzi zitatu, momwe mitundu imafalikira yowutsa mudyo, mwachilengedwe. [id id mawu = “attach_2323” align = “aligncenter” wide = “511”]
Samsung UE50RU7170U imagwira ntchito mu 4k resolution [/ mawu]

2K kusamvana, HD, Full HD, UHD, 4K ndi 8K – kusiyana

Tanthauzo lalikulu la kanema wawayilesi kapena HD ndi muyezo womwe umagwiritsidwa ntchito kwa zaka 15 kulikonse. Imayimira mapikiselo a 720p kapena 1280×720. Komabe, 90% ya ma TV pamsika lero amathandizira Full HD. Izi zikutanthauza kuti imawonetsa ma pixel a 1080p kapena 1920×1080. “R” – kumasulira kopita patsogolo kuchokera ku Chingerezi. Zimatanthawuza kuti chithunzi cha chimango chilichonse chimakhala chotsatira. Mzere uliwonse wa chimango umajambulidwa mwatsatanetsatane. M’malo mwa chilembo “R” ndi “i”. Imayimira kusanthula kwa interlaced. Izi zili pa HDTV muyezo mu 1080i. Zosafanana ndi mizere yofananira zikuwonetsedwa motsatana mu chimango chilichonse. Izi zimabweretsa kuwonongeka kodziwika bwino kwa chithunzi. UHD kapena Ultra HD ndi muyezo wofanana ndi 4K. Kupatulapo ndikuti imapereka madontho ochepa – 3840 × 2160 madontho (2K). 4K ndiye wolowa m’malo mwa muyezo wa 2K, yomwe idapangidwa ndi DCI ndipo imapereka malingaliro osinthika kangapo. 4k, Ultra High-Definition kapena Ultra High Definition – kuthekera kwa chipangizo kutulutsa zithunzi kwa oyang’anira okhala ndi ma TV ndi ma projekita. Uku ndiye kusamvana kwa kanema wokhala ndi chithunzithunzi kapena chithunzi china.
Palinso mtundu wa Full HD Ultra. Nthawi zambiri amatchedwa 8K, ili ndi mapikiselo a 7620 x 4320. Pali ma TV ambiri okhala ndi parameter iyi pa intaneti masiku ano. Komabe, kuti muyamikire, mufunika diagonal ya mainchesi 85 pa TV. Ubwino wamawonekedwewa umawonekera pamatali osiyanasiyana ogwiritsa ntchito kuchokera pazenera (ndi diagonal ya mainchesi 20 mpaka 130). Pa mtunda wa mamita 12, miyezo yonse imawoneka yofanana. Pamtunda wa mamita 10, ubwino wa 720p ukuwonekera, pamtunda wa mamita 7.5 – 1080p, ndi mtunda wa mamita 5 – 4k. Mkhalidwe wa muyezo wonse ndi womwewo: diagonal ya TV imachokera 50 mpaka 140 mainchesi. Kupanda kutero, sikutheka kuunika ubwino wake. Kodi pali kusiyana kotani pakati pa 2K, 4K, 8K resolution mu manambala ndi ma pixel: https://youtu.be/cUWkH_qV5Lg