Taw qhia
Thaum koj xaiv ibkoob yees duab module- rau lub borescope, lub koob yees duab kev ruaj ntseg, los yog embedded system - kev daws teeb meem feem ntau yog thawj spec koj kos. Tab sis dab tsi tiag txiav txim siab qhov kawg sharpness thiab nthuav dav ntawm daim duab? Puas yog nws tsuas yog tus lej pixels ntawm lub sensor? Tsis yog tiag. Muaj ntau yam - los ntawm lub lens zoo rau kev sib txuas bandwidth - cuam tshuamlub koob yees duab module daws teeb meem. Kab lus no piav qhia txog cov ntsiab lus tseem ceeb uas cuam tshuam qhov ntse koj daim duab kawg yuav ua li cas.
Lub Koob Yees Duab Module Resolution yog dab tsi?
Kev daws teeb meem yog qhov nthuav dav uas lub koob yees duab tuaj yeem ntes tau, feem ntau qhia raws li qhov dav × qhov siab hauv pixels (piv txwv li, 1920 × 1080 rau aLub koob yees duab module 1080p) los yog megapixels. Kev daws teeb meem siab dua txhais tau tias ntau pixels, uas tuaj yeem nthuav tawm cov ntsiab lus zoo dua. Txawm li cas los xij, lub sensor lub pixel suav tsuas yog qhov pib - ntau lwm yam txo cov kev daws teeb meem zoo.
1. Sensor Pixel suav thiab Pixel Loj
Qhov pom tseeb tshaj plaws yog tus naj npawb ntawm pixels ntawm lubcmos koob yees duab modulesensor. Ib tug 2-megapixel sensor yog aLub koob yees duab module 1080p; ib tug 8-megapixel sensor yog a4k usb koob yees duab module. Ntau pixels tuaj yeem muab kev daws teeb meem siab dua, tab sis tsuas yog yog tias tus so ntawm lub kaw lus tuaj yeem daws lawv.
Pixel loj tseem ceeb heev. pixels me me (1.0 µm) ntes lub teeb tsawg thiab tsim cov duab nrov, txo cov kev daws teeb meem zoo. Cov pixels loj dua (2.0 µm) muab cov duab huv dua, ua kom tag nrho cov kev daws teeb meem siv tau. Cramming ntau pixels mus rau lub sensor me me tsis tas yuav txhim kho lub ntiaj teb ntse ntse.
2. Lens Zoo
Lub lens tsom teeb rau ntawm lub sensor. Lub lens tsis zoo - ua los ntawm cov yas pheej yig uas tsis muaj qhov tseeb - yuav plam daim duab. Txawm tias ib4k usb koob yees duab moduleyuav zoo li mos yog tias lub lens tsis tuaj yeem daws 8 megapixels. Cov ntsiab lus tseem ceeb ntawm lub lens:
Optical daws teeb meem (kab khub ib millimeter)
Aperture ( cuam tshuam lub teeb thiab ntug sharpness)
Aberrations (chromatic, kheej kheej, distortion)
Ib qho zooHD koob yees duab module 2yuav tsum ua khub 1080p sensor nrog lub lens uas tuaj yeem daws 2 megapixels ntawm kev nthuav dav.
3. Image Signal Processor (ISP)
Raw sensor cov ntaub ntawv tsis yog cov duab pom. Lub ISP ua cov demosaicing, txo suab nrov, sharpening, thiab kho xim. ISP tsis zoo tuaj yeem rhuav tshem cov ntsiab lus; ISP zoo tuaj yeem rov qab tau nws. Rau ibusb koob yees duab modulenrog UVC, ISP yog nyob ntawm qhov module nws tus kheej - nws qhov zoo cuam tshuam ncaj qhalub koob yees duab module daws teeb meem.
4. Interface Bandwidth
Lub interface tuaj yeem dhau los ua ib lub raj mis:
A usb koob yees duab moduledhau USB 2.0 (480 Mbps) tsis tuaj yeem xa 1080p uncompressed (uas xav tau ~ 1.5 Gbps). Nws yuav tsum siv compression (MJPEG), uas tsis paub meej.
A 4k usb koob yees duab modulexav tau USB 3.0 (5 Gbps) rau uncompressed los yog maj mam compressed video. Siv USB 2.0 yuav hnyav rau cov duab, rhuav tshem kev daws teeb meem.
Embedded interfaces zoo li MIPI CSI-2 muaj bandwidth siab heev, khaws cia tag nrho cov kev daws teeb meem.
Txawm tias ibUART Infrared Sensor Module(tsawg ceev) tuaj yeem xa cov duab me me, compressed heev - nws cov kev daws teeb meem zoo yog qis dua VGA, qhia txog qhov tseem ceeb ntawm bandwidth.
5. Compression thiab Codec
Feem ntauusb koob yees duab modulepab kiag li lawm siv MJPEG, H.264, los yog H.265 kom haum video los ntawm USB. High compression qhia txog cov khoom cuav (blur, blockiness), txo cov kev daws teeb meem zoo. Rau cov ntawv thov tseem ceeb, cov khoom siv raw lossis cov khoom siv tsis tau khaws cia kom nthuav dav tab sis yuav tsum muaj kev siv bandwidth siab.
6. Teeb pom kev zoo
Nyob rau hauv lub teeb qis, lub koob yees duab nce nce (amplification), uas ntxiv suab nrov. Lub ntsej muag lub ntsej muag zoo meej, txo qhov kev daws teeb meem zoo. Txawm yog qhov zoo tshaj plawsHD koob yees duab module 2yuav tsim ib lub suab nrov, tsis tshua muaj cov duab hauv cov yeeb nkab tsaus uas tsis muaj teeb pom kev ntxiv. Lub teeb pom kev zoo ua kom nce qis thiab khaws cia tag nrho cov kev daws teeb meem.
7. Ua kom pom tseeb thiab qhov tob ntawm qhov teb
Cov duab tsis pom tseeb yog qhov muag plooj tsis hais txog pixel suav. Ntaukoob yees duab moduleCov qauv tsim siv lub teeb pom kev ruaj khov rau qhov kev ncua deb ntawm hyperfocal (piv txwv li, 30 mm). Yog tias koj lub hom phiaj yog nyob ntawm 10 hli, nws yuav plooj me ntsis, thiab kev daws teeb meem zoo poob. Los ntawm txhais tes tsom xam lossis autofocus pab tswj kom ntse.
8. Sensor Readout hom
Ib txhiacmos koob yees duab modulesensors txhawb binning (combining pixels) los yog sub-sampling rau kev lag luam daws teeb meem rau cov ncej siab dua los yog qis suab nrov. Yog tias koj tsis siv qhov kev daws teeb meem tag nrho, koj tsis tau txais qhov siab tshaj plawslub koob yees duab module daws teeb meem.
9. Cov xwm txheej ib puag ncig
Thaum tshav kub kub tsub kom tsaus nti tam sim no thiab suab nrov, txo cov kev daws teeb meem zoo. Kev vibration ua rau kev ua kom pom tseeb. Plua plav ntawm lub lens lossis sensor tsim qhov muag plooj. Rau sab nraum zoov4k usb koob yees duab modulekev siv, sealing thiab tswj thermal yog qhov tseem ceeb.
10. Lub tswv yim ua thiab tso saib
Cov duab kawg tsuas yog zoo li koj cov zaub. Lub 1080p saib tsis tuaj yeem qhia tag nrho cov ntsiab lus ntawm 4K duab tshwj tsis yog tias koj zoom. Yog hais tias tus saib software downscales tus yees duab, nthuav dav ploj. Xyuas kom tag nrho cov raj xa dej txhawb nqa koj lub hom phiaj daws teeb meem.
Yuav ua li cas Maximize Resolution
Xaiv ibcmos koob yees duab modulenrog rau txoj cai pixel suav thiab loj.
Siv lub iav zoo tshaj plaws.
Xyuas kom ISP muaj peev xwm (lossis hla nws nrog cov ntaub ntawv nyoos).
Siv ib qho kev sib txuas nrog txaus bandwidth (USB 3.0 rau 4K, MIPI rau uncompressed).
Muab ntau lub teeb thiab ua kom lub sensor txias.
Siv phau ntawv los yog autofocus rau koj qhov chaw ua haujlwm.
Sincere's Camera Modules
Ntawm Sincere, peb tsimkoob yees duab modulecov khoom uas maximize zoo daws teeb meem:
HD koob yees duab module 2- 1080p nrog cov iav lo ntsiab muag zoo thiab qib siab ISP.
Usb koob yees duab module- UVC-raws li, optimized MJPEG kom pom tseeb.
Lub koob yees duab module 1080p- Sib npaug rau kev ua haujlwm tsawg-teeb thiab ntse.
Cmos koob yees duab module- Sony IMX sensors nrog pixels loj, tsis muaj suab nrov.
4k usb koob yees duab module- USB 3.0, 4K @ 30 fps, sib phim lens.
Lub koob yees duab module daws teeb meem- Peb sim thiab txheeb xyuas qhov kev daws teeb meem zoo raws li cov xwm txheej tiag tiag.
(Faj seeb: ThaumUART Infrared Sensor Moduleua hauj lwm rau lub hom phiaj sib txawv, nws qhov kev txwv bandwidth qhia tias yog vim li cas kev sib txuas ceev ceev yog qhov tseem ceeb rau kev daws teeb meem siab.)
Cov ntsiab lus
Lub koob yees duab module daws teeb meemyog txiav txim los ntawm ntau yam tshaj li tus sensor lub megapixel suav. Lens zoo, ISP, interface bandwidth, compression, teeb pom kev zoo, tsom, thiab ib puag ncig txhua tus ua lub luag haujlwm. A4k usb koob yees duab modulexa cov ntsiab lus tseeb 4K tsuas yog tias txhua qhov khoom siv - lub lens, sensor, ISP, USB 3.0 interface, thiab tso saib - ua haujlwm ua ke. Rau feem ntau daim ntawv thov, ib tug zoo-tsimHD koob yees duab module 2(1080p) nrog optics zoo thiab teeb pom kev zoo muab qhov sib npaug zoo ntawm tus nqi, cov ntaub ntawv loj, thiab siv tau zoo dua li lub koob yees duab 4K tsis zoo. Kev nkag siab txog cov xwm txheej no pab koj xaiv txoj caikoob yees duab modulerau koj xav tau.
Hu rau Sincere los tham txog kojlub koob yees duab module daws teeb meemkev xav tau.
