Rolling shutter ndi njira yojambulira zithunzi pomwe chithunzi chokhazikika (mu kamera yokhazikika) kapena chimango chilichonse cha kanema (mu kamera ya kanema) chimajambulidwa, osati kujambula chithunzi chonse panthawi imodzi, koma. m'malo mosanthula zochitikazo mwachangu, molunjika kapena mopingasa.M’mawu ena, si mbali zonse za chithunzicho zimene zimalembedwa nthawi yomweyo.(Ngakhale kuti, posewera, chithunzi chonse cha chochitikacho chimasonyezedwa nthawi imodzi, ngati kuti chikuimira mphindi imodzi yokha.) Zimenezi zimatulutsa kupotozedwa kodziŵika kwa zinthu zomwe zikuyenda mofulumira kapena kung’anima kofulumira kwa kuwala.Izi zikusiyana ndi "chotseka chapadziko lonse" chomwe chimango chonsecho chimajambulidwa nthawi yomweyo. "Rolling Shutter" ikhoza kukhala yamakina kapena zamagetsi.Ubwino wa njirayi ndikuti sensa ya chithunzi imatha kupitiliza kusonkhanitsa mafotoni panthawi yogula, motero imakulitsa chidwi.Imapezeka pamakamera ambiri a digito ndi makanema ogwiritsa ntchito masensa a CMOS.Zotsatira zake zimawonekera kwambiri poganizira zakuyenda monyanyira kapena kung'anima kofulumira kwa kuwala.
Global Shutter
Global shutter modemu sensa ya zithunzi imalola ma pixel onse a sensa kuti ayambe kuwonekera ndikusiya kuwonekera nthawi imodzi pa nthawi yowonetsera nthawi yomwe chithunzi chili chonse chikupezeka.Pambuyo pakutha kwa nthawi yowonetsera, kuwerengera kwa pixel kumayamba ndikupitilira mzere ndi mzere mpaka zonse za pixel zitawerengedwa.Izi zimapanga zithunzi zosasokonezeka popanda kugwedezeka kapena kugwedezeka.Masensa a shutter padziko lonse amagwiritsidwa ntchito kujambula zinthu zothamanga kwambiri.It angayerekezedwe ndi zotsekera ma lens wamba mumakamera amafilimu a analogi.Mofanana ndi iris m'diso la munthu, amafanana ndi pobowola magalasi ndipo mwina ndizomwe mumaganiza mukaganizira zotsekera..
Chotsekeracho ndikutsegula mwachangu ngati mphezi ikatulutsidwa ndikutseka nthawi yomweyo kumapeto kwa nthawi yowonekera.Pakati pa kutsegulidwa ndi kutsekedwa, gawo la filimu kuti atenge chithunzicho limawonekera nthawi imodzi (kuwonetseredwa kwapadziko lonse).
Monga momwe tawonetsera mu chithunzi chotsatirachi: mumtundu wa shutter wapadziko lonse pixel iliyonse mu sensa imayamba ndikutha kuwonetsera panthawi imodzi, motero kukumbukira kwakukulu kumafunika, chithunzi chonsecho chikhoza kusungidwa mu kukumbukira pambuyo poti kuwonekera kwatha ndipo akhoza kuwerengedwa. pang'onopang'ono.Njira yopangira sensa imakhala yovuta kwambiri ndipo mtengo wake ndi wokwera mtengo, koma ubwino wake ndi wakuti ukhoza kulanda zinthu zothamanga kwambiri popanda kusokoneza, ndipo ntchitoyo ndi yochuluka kwambiri.
Makamera a shutter padziko lonse lapansi amagwiritsidwa ntchito ngati kutsatira mpira, makina opanga mafakitale, maloboti osungira, ma drones.,kuyang'anira magalimoto, kuzindikira ndi manja,AR&VRndi zina.
Shutter ya Rolling
Kugudubuza shutter modemu kamera imawonetsa mizere ya pixel imodzi pambuyo pa inzake, ndikuchotsa kwakanthawi kuchokera pamzere umodzi kupita wotsatira.Poyamba, mzere wapamwamba wa chithunzicho umayamba kusonkhanitsa kuwala ndikumaliza.Kenako mzere wotsatira umayamba kutolera kuwala.Izi zimapangitsa kuchedwa kumapeto ndi nthawi yoyambira kusonkhanitsa kuwala kwa mizere yotsatizana.Nthawi yosonkhanitsa kuwala kwa mzere uliwonse ndi yofanana ndendende. Muzotsekera zotsekera, mizere yosiyana ya gululo imawonekera nthawi zosiyanasiyana pamene 'wave' imasesa pa sensa, monga momwe tawonetsera pachithunzichi: mzere woyamba. imawonetsa koyamba, ndipo ikatha nthawi yowerengera, mzere wachiwiri umayamba kuwonekera, ndi zina zotero.Choncho, mzere uliwonse umawerengedwa ndiyeno mzere wotsatira ukhoza kuwerengedwa.Sensa yotsekera yotsekera gawo lililonse la pixel imangofunika ma transistors awiri kuti ayendetse ma elekitironi, motero kutentha pang'ono, phokoso lochepa.Poyerekeza ndi sensa ya shutter yapadziko lonse lapansi, mawonekedwe a makina otsekemera otsekemera ndi ophweka komanso otsika mtengo, koma chifukwa mzere uliwonse sunawonekere nthawi yomweyo, kotero umatulutsa kusokoneza pamene ukugwira zinthu zothamanga kwambiri.
Kamera ya shutter yozunguliraAmagwiritsidwa ntchito kwambiri kugwira zinthu zoyenda pang'onopang'ono monga mathirakitala aulimi, zotengera zoyenda pang'onopang'ono, ndi ntchito zodziyimira zokha monga ma kiosks, ma barcode scanner, ndi zina.
KODI MUNGAPEWE BWANJI?
Ngati liwiro losuntha silili lokwera kwambiri, ndipo kuwala kumasiyanasiyana pang'onopang'ono, vuto lomwe takambirana pamwambapa silikhudza chithunzicho.Nthawi zambiri, kugwiritsa ntchito sensa yapadziko lonse lapansi m'malo mogudubuza sensa yotsekera ndiyo njira yofunikira komanso yothandiza kwambiri pamapulogalamu othamanga kwambiri.Komabe, m'mapulogalamu ena otsika mtengo kapena osamva phokoso, kapena ngati wogwiritsa ntchito akuyenera kugwiritsa ntchito cholumikizira chotsekera pazifukwa zina, atha kugwiritsa ntchito kung'anima kuti achepetse zotsatira zake.Pali zinthu zingapo zomwe muyenera kuzidziwa mukamagwiritsa ntchito mawonekedwe a sync flash ndi sensor shutter:● Osati mu nthawi yonse yowonetsera yomwe imakhala ndi zizindikiro za strobe, pamene nthawi yowonetsera ili yochepa kwambiri ndipo nthawi yowerengera ndi yaitali kwambiri, mizere yonse ilibe mawonekedwe ophatikizika, palibe kutulutsa chizindikiro cha strobe, ndipo strobe siyimang'anima.● Pamene nthawi ya strobe kung'anima ndi yaifupi kuposa nthawi yowonekera● Pamene nthawi yotulutsa siginecha ili yayifupi kwambiri (μs mulingo), magwiridwe antchito a strobe ena sangathe kukwaniritsa zofunikira zosinthira liwiro lapamwamba, kotero strobe singagwire chizindikiro cha strobe.
Nthawi yotumiza: Nov-20-2022
