HDR (High Dynamic Range) thev naus laus zis ua tiav ntau dua dynamic ntau, dav xim gamut, thiab cov duab tiag tiag los ntawm kev sib xyaw ntawm cov khoom siv thiab software, ua rau nws tsim tshwj xeeb rau cov xwm txheej nrog cov duab nruj, xws li kev soj ntsuam thiab kev ua haujlwm hauv nroog.
I. Keeb kwm ntawm HDR Technology
Nrog rau kev siv dav dav ntawm LED vaj huam sib luag nrog lub teeb ci siab dua thiab qhov sib txawv, thiab ultra- siab- txhais me me - suab tshuab, SDR (Standard Dynamic Range) thev naus laus zis tuaj yeem ua tsis tau raws li qhov xav tau. SDR thev naus laus zis yog ua raws li 8-ntsis vaj huam sib luag nrog qhov ci ci ntawm tsuas yog 100 nits, nthuav tawm cov kev txwv tseem ceeb hauv ntau yam kev hloov pauv thiab xim luam tawm. Nyob rau hauv lub xyoo pua 21st, HDR thev naus laus zis tau tshwm sim, nrog nws cov txiaj ntsig tseem ceeb yog:
Txhim kho Dynamic Range: Txhim kho qhov sib txawv hauv qhov tsaus ntuj thiab ci ntsa iab, tiv thaiv kom pom ntau dhau ntawm qhov kaj thiab dub ntau dhau hauv qhov tsaus ntuj.
Expanded Color Gamut: Xim luam tawm ze dua rau tib neeg kev pom kev pom, npog ntau yam xim ntau dua.
System Dependence: HDR tsis yog siv los ntawm ib qho algorithm lossis kho vajtse, tab sis tsuas yog tso siab rau kev sib koom tes kho vajtse thiab software kev daws teeb meem.
Kev siv HDR yuav tsum ua kom tau raws li cov khoom siv nruj thiab cov qauv txheej txheem:
Xim Qhov tob: Lub kaw lus tso saib yuav tsum txhawb xim qhov tob ntawm 10 cov khoom lossis ntau dua, nrog cov xim zoo nkauj hloov pauv.
Brightness Standard: Lub ncov screen brightness tsawg kawg yog 800 nits yog pom zoo kom ua kom pom cov ntsiab lus tseem ceeb. Xim Gamut Standard: Kev lag luam feem ntau lees txais BT.2020 dav xim gamut tus qauv, npog qhov chaw xim dav dua.
Video Source Matching: HDR teebmeem nyob ntawm HDR video qhov chaw nyob los yog kaw qhov xwm txheej thiab yuav tsum tau sib xws nrog cov zaub system.
III. Kev siv tswv yim los ntawm HDR Technology
Siv lub chaw saib xyuas kev ruaj ntseg rau pej xeem thiab kev txiav txim plaub ntug ua piv txwv, HDR thev naus laus zis txhim kho cov duab zoo hauv thaj chaw teeb pom kev zoo:
Scenario Challenges: Sab hauv lub teeb pom kev zoo yog kwv yees li 500 lux, thiab kev saib xyuas cov duab feem ntau raug kev txom nyem los ntawm overexposure nyob rau hauv qhov kaj thiab underexposure nyob rau hauv qhov tsaus ntuj nti vim backlighting thiab ntxoov ntxoo.
HDR Qhov Zoo:
Kev Tshaj Tawm Txog Kev Tshaj Tawm: Cov txheej txheem tsaus ntuj thiab cov ntaub ntawv tob ntawm cov tsheb thiab cov tsev tau pom meej dua, thiab cov ntsiab lus tseem ceeb xws li daim ntawv tso cai yog txheeb xyuas tau.
Dynamic Range: Cov ntsiab lus tau khaws cia ib txhij nyob rau hauv qhov kaj (xws li lub teeb taub hau thiab kev xav) thiab qhov tsaus ntuj (xws li ntxoov ntxoo), uas ua rau cov duab pob tshab nrog cov txheej txheem muaj zog.
Ncej - Tus nqi tsim khoom: Txhim kho kev kaw cov yeeb yaj kiab kom zoo, muab pov thawj txhim khu kev qha ntau dua rau kev tshuaj xyuas cov xwm txheej thiab khaws cia.
Hais Txog Kev Tsis Txaus Siab: HDR tsis tsuas yog kho cov duab tiag tiag xwb tab sis kuj txo cov kev siv thev naus laus zis hauv ultra- siab- txhais cov teeb liab kis tau tus mob thiab tso saib rau kev lag luam LED.
Mainstream Standards: Tam sim no HDR technologies suav nrog cov qauv xws li HDR10, HDR10+, thiab Dolby Vision, yuav tsum tau xaiv cov kev daws teeb meem tsim nyog raws li qhov xwm txheej tshwj xeeb.
Cov ntsiab lus: Los ntawm kev txhim kho ntau yam dynamic, xim gamut, thiab ci ntsa iab, HDR thev naus laus zis muab cov duab tsim muaj tseeb ntau dua rau cov xwm txheej xws li kev saib xyuas tsheb thiab kev ua haujlwm hauv nroog. Nws qhov kev siv yog nyob ntawm kev sib koom ua ke ntawm siab - cov khoom siv tshwj xeeb thiab cov khoom siv video, thiab yav tom ntej, nws yuav ua ke nrog cov thev naus laus zis tshiab los tsav kev lag luam zaub mus rau cov duab zoo dua.
