Raws li txhua yam peb paub lub suab nrov yog qhov tsis tuaj yeem ua los ntawm cov khoom siv amplifiers hauv cov koob yees duab kev ruaj ntseg. Yees duab "suab nrov" yog daim ntawv "zoo li qub" uas tsim cov huab cua pos huab, speckles, thiab fuzz uas ua rau cov duab ntawm koj lub koob yees duab soj ntsuam tsis meej nyob rau hauv qhov chaw qis. Kev txo suab nrov yog qhov tsim nyog kiag li yog tias koj xav tau cov duab meej meej hauv cov teeb pom kev tsis zoo, thiab nws yuav dhau los ua qhov tseem ceeb dua vim tias kev daws teeb meem tam sim no thawb dhau 4MP thiab 8MP.
Muaj ob txoj hauv kev txo suab nrov hauv khw. Qhov thib ib yog txoj kev txo suab nrov ntawm lub cev hu ua 2D-DNR, thiab qhov thib ob yog 3D-DNR uas yog qhov txo qis suab nrov.
2D Digital Noise Reduction yog ib txoj hauv kev yooj yim tshaj plaws siv los tshem tawm suab nrov. Txawm hais tias nws muaj kev vam meej hauv kev tshem cov suab nrov hauv cov duab, nws tsis ua haujlwm zoo hauv kev daws teeb meem siab dua thiab thaum muaj ntau qhov kev txav mus los.
2D DNR raug suav hais tias yog "Temporal Noise Reduction" txheej txheem. Dab tsi tshwm sim yog tias txhua pixel ntawm txhua tus ncej yog piv rau cov pixels ntawm lwm tus ncej. Los ntawm kev sib piv cov nqi siv zog thiab cov xim ntawm txhua qhov ntawm cov pixels no, nws muaj peev xwm tsim cov algorithms los kuaj xyuas tus qauv uas tuaj yeem faib ua "suab nrov."
3D-DNR txawv raws li nws yog "spatial suab nrov txo", uas piv pixels nyob rau hauv tib lub thav duab nyob rau sab saum toj ntawm ncej-rau-thav duab sib piv. 3D-DNR tshem tawm cov duab tsis zoo ntawm cov duab uas tsis muaj teeb pom kev zoo, yuav ua rau cov khoom txav mus los yam tsis muaj cov tails tom qab, thiab nyob rau hauv lub teeb qis, nws ua rau cov duab pom tseeb dua thiab ntse dua piv rau tsis muaj suab nrov txo lossis 2D-DNR. 3D-DNR yog qhov tseem ceeb los tsim cov duab meej ntawm koj lub koob yees duab kev ruaj ntseg ntawm koj qhov kev soj ntsuam.
3D suab nrov txo (3D DNR) lub koob yees duab saib xyuas lub koob yees duab tuaj yeem paub qhov chaw ntawm lub suab nrov thiab nce nws los ntawm kev sib piv thiab tshuaj xyuas cov duab ntawm lub hauv ntej thiab nraub qaum Control, 3D digital suab nrov txo kev ua haujlwm tuaj yeem txo cov suab nrov cuam tshuam ntawm cov duab tsis muaj zog. Txij li cov tsos ntawm cov duab suab nrov yog random, lub suab nrov ntawm txhua daim duab duab tsis zoo ib yam. 3D cov suab nrov txo los ntawm kev sib piv ntau cov duab uas nyob ib sab, cov ntaub ntawv tsis sib tshooj (lub suab nrov) yuav raug txiav tawm, siv 3D suab nrov txo lub koob yees duab, cov duab suab nrov yuav txo qis, cov duab yuav zoo dua. Yog li ua kom pom cov duab ntshiab thiab ilv dua.In the analog high-definition monitoring system, ISP suab nrov txo cov cuab yeej hloov kho dua tshiab 2D thev naus laus zis rau 3D, thiab ntxiv cov haujlwm ntawm thav duab kom txo cov suab nrov ntawm lub hauv paus ntawm lub suab nrov intra-frame. txo. Analog HD ISP tau txhim kho kev ua haujlwm ntawm cov duab dav dav thiab lwm yam. Nyob rau hauv cov nqe lus ntawm dav dynamic ua, analog HD ISP kuj siv lub interframe dav dynamic technology, kom cov ntsiab lus ntawm lub teeb thiab tsaus qhov chaw ntawm daim duab yog clearer thiab ze rau qhov tseeb tshwm sim los ntawm tib neeg lub qhov muag.
Txawm hais tias qhov twg los, cov suab nrov digital video tuaj yeem cuam tshuam qhov pom qhov zoo ntawm cov duab. Cov yeeb yaj kiab uas tsis tshua muaj suab nrov feem ntau zoo dua.Ib txoj hauv kev kom ua tiav qhov ntawd yog siv lub suab nrov hauv lub koob yees duab txo thaum muaj. Lwm qhov kev xaiv yog siv cov suab nrov txo hauv kev ua haujlwm tom qab.
Hauv kev lag luam lub koob yees duab, 3D suab nrov txo cov cuab yeej yuav tsis muaj qhov xav tsis thoob los ua ib qho tseem ceeb hauv lub neej yav tom ntejThaum analog high-txhais soj ntsuam cov khoom tuaj tawm, ISP suab nrov txo tshuab pom qhov chaw. Hauv cov khoom siv analog high-txhais soj ntsuam, nws tuaj yeem hloov kho mus rau lub koob yees duab analog high-line ntawm tus nqi qis, thiab cov ntsiab lus video tuaj yeem txhim kho los ntawm 30%. Qhov no yog qhov zoo ntawm cov tshuab no. 3D cov suab nrov txo kev ua haujlwm tuaj yeem ua rau CMOS HD cov koob yees duab kom tau txais cov duab zoo ib yam lossis zoo dua li CCD ntawm qhov loj tib yam hauv ib puag ncig ntawm qhov tsis pom kev. Ua ke nrog lub siab dynamic ntau ntawm CMOS, CMOS cov khoom ua lub luag haujlwm tseem ceeb hauv HD koob yees duab. Los ntawm kev txo tus nqi ntawm cov ntaub ntawv video los ntawm cov suab nrov-txo cov duab, thiab yog li txo qhov siab ntawm lub network bandwidth thiab khaws cia, yuav tsis muaj chaw rau analog hauv kev lag luam soj ntsuam siab.
Nyob rau hauv kev teb rau cov qauv no, kom tau raws li cov kev xav tau ntawm cov neeg siv khoom ntau rau cov koob yees duab zoo tshaj plaws, Hampo tab tom yuav tshaj 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!
Post lub sij hawm: Feb-16-2023
