Raws li peb txhua tus paub, lub suab nrov yog ib qho khoom tsis tuaj yeem zam tau ntawm cov amplifiers hauv cov koob yees duab kev ruaj ntseg. Video "suab nrov" yog hom "static" uas tsim cov pos huab, speckles, thiab fuzz uas ua rau daim duab ntawm koj lub koob yees duab saib xyuas tsis meej hauv cov xwm txheej tsawg. Kev txo suab nrov yog qhov tsim nyog heev yog tias koj xav tau daim duab zoo meej hauv cov xwm txheej tsawg, thiab nws tseem ceeb dua vim tias qhov kev daws teeb meem tam sim no thawb dhau 4MP thiab 8MP.
Muaj ob txoj kev txo suab nrov nrov hauv kev ua lag luam. Thawj txoj yog txoj kev txo suab nrov ib ntus hu ua 2D-DNR, thiab qhov thib ob yog 3D-DNR uas yog kev txo suab nrov ntawm qhov chaw.
2D Digital Noise Reduction yog ib txoj hauv kev yooj yim tshaj plaws uas siv los tshem tawm suab nrov. Txawm hais tias nws ua tiav hauv kev tshem tawm suab nrov hauv cov duab, nws tsis ua haujlwm zoo hauv qhov kev daws teeb meem siab dua thiab thaum muaj kev txav mus los ntau.
2D DNR yog suav tias yog ib txoj kev "Temporal Noise Reduction". Qhov tshwm sim yog tias txhua pixel ntawm txhua tus ncej raug piv rau cov pixels ntawm lwm tus ncej. Los ntawm kev sib piv cov nqi zog thiab xim ntawm txhua tus pixels no, nws muaj peev xwm tsim cov algorithms los ntes tus qauv uas tuaj yeem raug cais ua "suab nrov."
3D-DNR txawv vim nws yog "kev txo suab nrov ntawm qhov chaw", uas piv cov pixels hauv tib lub thav duab saum toj ntawm kev sib piv thav duab. 3D-DNR tshem tawm cov duab tsis meej ntawm cov duab teeb pom kev zoo, yuav tswj cov khoom txav mus los yam tsis tawm hauv qab, thiab hauv qhov teeb pom kev zoo tsawg, nws ua rau cov duab meej dua thiab ntse dua piv rau tsis muaj kev txo suab nrov lossis 2D-DNR. 3D-DNR yog qhov tseem ceeb rau kev tsim cov duab meej los ntawm koj lub koob yees duab kev ruaj ntseg ntawm koj lub kaw lus saib xyuas.
Lub koob yees duab saib xyuas 3D txo suab nrov (3D DNR) tuaj yeem nrhiav qhov chaw ntawm suab nrov thiab tau txais nws los ntawm kev sib piv thiab tshuaj xyuas cov duab ntawm pem hauv ntej thiab nraub qaum. Kev tswj hwm, 3D digital txo suab nrov ua haujlwm tuaj yeem txo qhov cuam tshuam suab nrov ntawm cov duab teeb liab tsis muaj zog. Vim tias qhov tsos ntawm cov suab nrov ntawm daim duab yog random, lub suab nrov ntawm txhua daim duab thav duab tsis zoo ib yam. 3D digital txo suab nrov los ntawm kev sib piv ntau daim duab thav duab sib ze, cov ntaub ntawv tsis sib tshooj (uas yog suab nrov) yuav raug lim tawm, siv lub koob yees duab txo suab nrov 3D, suab nrov ntawm daim duab yuav raug txo qis heev, daim duab yuav ua tiav ntau dua. Yog li qhia tau tias daim duab huv dua thiab zoo nkauj dua. Hauv lub kaw lus saib xyuas analog siab txhais, ISP txo suab nrov thev naus laus zis hloov kho cov thev naus laus zis 2D ib txwm muaj rau 3D, thiab ntxiv cov haujlwm ntawm thav duab rau thav duab txo suab nrov raws li thawj zaug txo suab nrov hauv thav duab. Analog HD ISP tau txhim kho cov haujlwm ntawm cov duab dav dav thiab lwm yam. Hais txog kev ua tiav dav dav, analog HD ISP kuj siv cov thev naus laus zis interframe dav dav, kom cov ntsiab lus ntawm lub teeb thiab tsaus ntawm daim duab meej dua thiab ze rau qhov cuam tshuam tiag tiag uas tib neeg lub qhov muag pom.
Txawm yog los ntawm qhov twg los xij, suab nrov ntawm cov yeeb yaj kiab digital tuaj yeem ua rau qhov zoo ntawm cov yeeb yaj kiab tsis zoo. Cov yeeb yaj kiab uas tsis tshua muaj suab nrov feem ntau zoo dua.Ib txoj hauv kev ua tau qhov ntawd yog siv lub koob yees duab txo suab nrov thaum muajLwm txoj kev xaiv yog siv kev txo suab nrov hauv kev ua tiav tom qab.
Hauv kev lag luam koob yees duab, 3D suab nrov txo tshuab yuav tsis muaj qhov tsis ntseeg tias yuav dhau los ua qhov sib txawv tseem ceeb yav tom ntejThaum cov khoom siv saib xyuas analog high-definition tawm los, ISP suab nrov txo tshuab tau pom ib qho chaw. Hauv cov khoom siv saib xyuas analog high-definition, nws tuaj yeem hloov kho mus rau lub koob yees duab analog high-line ntawm tus nqi qis, thiab cov nyhuv video txhais tau zoo dua 30%. Qhov no yog qhov zoo ntawm cov thev naus laus zis no. Lub luag haujlwm txo suab nrov 3D digital tuaj yeem ua rau CMOS HD koob yees duab tau txais cov duab zoo ib yam lossis zoo dua li CCD ntawm tib qhov loj me hauv qhov chaw uas tsis muaj teeb pom kev zoo. Ua ke nrog CMOS dynamic ntau yam, CMOS cov khoom ua lub luag haujlwm tseem ceeb hauv HD koob yees duab. Los ntawm kev txo cov ntaub ntawv video los ntawm cov duab txo suab nrov, thiab yog li txo qhov kev nyuaj siab rau network bandwidth thiab kev khaws cia, yuav tsis muaj chaw rau analog hauv kev lag luam saib xyuas high-definition.
Txhawm rau teb rau qhov kev hloov pauv tseem ceeb no, kom ua tau raws li qhov xav tau ntawm cov neeg siv khoom ntau dua rau cov koob yees duab zoo, Hampo tab tom yuav tso tawm cov koob yees duab modules nrog 3D suab nrov txo tshuab, cia peb tos ntsoov rau peb cov khoom tshiab -3D suab nrov txo lub koob yees duab module los!
Lub sijhawm tshaj tawm: Lub Ob Hlis-16-2023
