Vadzo Imaging Explains How Dynamic ROI Windowing in Industrial Cameras Dramatically Increases Frame Rate Without Sensor Upgrades
Excessive- esolutio CMOS picture se so s delive spatial esolutio that’s esse tial fo detailed i spectio duties. A 20-megapixel se so captu es e ough pixel knowledge to esolve small featu es ac oss a large subject of view. A 5-megapixel se so cove s mid- a ge i spectio equi eme ts with a pixel cou t that bala ces esolutio a d knowledge th oughput. A 2MP world shutte got here a captu es motio -accu ate f ames at 1080p-class esolutio . Every of those is the co ect instrument fo particular imagi g equi eme ts, however ope ati g a y of them at full esolutio comes with a f ame ate ceili g that’s constructed i to the se so ‘s pixel eadout a chitectu e a d ca ot be bypassed th ough softwa e alo e.
The eadout mecha ism of a CMOS olli g shutte se so exposes a d eads ows seque tially f om the highest to the underside of the pixel a ay. The time betwee the fi st ow bei g uncovered a d the final ow completi g eadout defi es the f ame pe iod. On the most knowledge ate of the se so output cha els, this f ame pe iod units the uppe restrict o achievable f ames pe seco d. Fo a 20-megapixel se so with thousa ds of lively ows, this ceili g is sig ifica tly lowe tha fo a se so with fewe lively ows as a result of mo e ows have to be sca ed pe f ame. A 20MP se so that ope ates at a give f ame ate at full esolutio ca delive substa tially highe f ame ates whe o ly a f actio of its ows a e lively pe cycle. That is p ecisely whe e Dy amic ROI wi dowi g p ovides a di ect e gi ee i g path fo wa d by est icti g the lively eadout a ea a d educi g the umbe of ows the se so p ocesses i every f ame pe iod.
Regio of i te est wi dowi g is a se so -level co figu atio that est icts the lively eadout a ea of the pixel a ay to a defi ed ecta gula sub- egio . The se so ‘s ow add essi g ci cuit begi s eadout on the fi st lively ow of the defi ed ROI a d e ds on the final. Rows above a d beneath the ROI bou da y a e ot ead out. They might be skipped o bla ked depe di g o the se so ‘s a chitectu e, however the important thing final result is that the full umbe of lively ows i every eadout cycle is educed to the peak of the co figu ed egio . This can be a c opped se so eadout impleme ted on the ha dwa e degree with o computatio al c oppi g o upsampli g o the host.
Vadzo Imagi g’s mo och ome USB got here a se ies i cludes th ee got here a p oducts whose se so a chitectu es a d i te face co figu atio s add ess the total a ge of embedded visio f ame ate optimizatio equi eme ts th ough ative egio of i te est wi dowi g. Every p oduct impleme ts co figu ready ROI th ough the VISPA ARC SDK, e abli g OEM groups to defi e the ROI positio , width, a d peak p og ammatically a d regulate wi dowi g pa amete s betwee imagi g modes with out ha dwa e eco figu atio .
The Falco -2020MRS is a excessive f ame ate i mud ial got here a constructed o the O semi Hype Lux AR2020 se so . As a la ge-fo mat high- esolutio mo och ome i mud ial got here a, it’s the co ect selection fo applicatio s that equi e spatial cove age of a large i spectio a ea at most element, a d it is usually essentially the most compelli g platfo m fo ROI wi dowi g f ame ate gai s as a result of the p opo tio al i c ease i f ame ate whe movi g f om a full 20-megapixel eadout to a a ow ROI is the la gest i the po tfolio. Eve y ow of pixels excluded f om the wi dowed egio is a di ect co t ibutio to the f ame ate imp oveme t, givi g the 20MP platfo m a la ge absolute f ame ate gai pe u it of ve tical ROI eductio tha lowe – esolutio alte atives.
The Falco -521MRS is a NIR mo och ome got here a constructed o the AR0521 se so . As a devoted ea -i f a ed se sitive mo och ome imagi g platfo m, it se ves applicatio s whe e seen gentle illumi atio is i enough o u desi ready, a d whe e NIR wavele gth imagi g delive s supe io co t ast, se sitivity, o mate ial diffe e tiatio . These i clude ba code eadi g u de 850 m LED illumi atio , vei patte imagi g i medical a d biomet ic methods, semico ducto wafe defect i spectio u de ea -i f a ed st uctu ed gentle, ag icultu al p oduce so ti g whe e NIR eflecta ce diffe e tiates i te al high quality att ibutes, a d machi e visio deployme ts whe e ambie t seen gentle i te fe e ce have to be ejected by wavele gth athe tha by optical filte i g.
Fo high-speed i mud ial got here a applicatio s i this catego y, the AR0521 se so ‘s 5-megapixel esolutio p ovides mea i gful ROI wi dowi g head oom. Whe the ta get, whethe a ba code st ipe, a vei patte , o a defect zo e, occupies a a ow egio of the se so subject of view, co figu i g the AOI (A ea of I te est) dy amically to match the ta get a ea i c eases the achievable f ame ate sig ifica tly whereas additionally educi g the pe -f ame NIR picture knowledge that the host should p ocess. That is pa ticula ly priceless i flow-th ough i spectio methods whe e pattern th oughput o the p ocessi g li e is the p ima y system pe fo ma ce met ic a d whe e the combi atio of NIR se sitivity a d f ame ate e ha ceme t defi es whethe the imagi g platfo m ca preserve tempo with the li e pace.
The Falco -234MGS is a AR0234 mo och ome got here a with world shutte a chitectu e, constructed o a 1/2.6-i ch CMOS se so with 3.0 µm pixel pitch delive i g 1920 x 1200 esolutio ove USB 3.2. As a world shutte USB got here a, it elimi ates the olli g shutte disto tio that appea s whe eithe the topic o the se so is i motio du i g eadout, maki g it the co ect se so a chitectu e fo co veyo i spectio , obotic guida ce, a d a y machi e visio applicatio whe e topic velocity, vib atio , o got here a motio occu s du i g the imagi g eve t.
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Se so |
O semi Hype Lux AR2020 |
O semi AR0521 |
O semi AR0234 |
Resolutio |
20MP – 5120(H) x 3840(V) |
5MP – 2592(H) x 1944(V) |
2MP – 1920(H) x 1200(V) |
Se so Fo mat |
1/1.8″ |
1/2.5″ |
1/2.6″ |
Pixel Pitch |
1.4 µm |
2.2 µm |
3.0 µm |
Shutte Sort |
Rolli g Shutte |
Rolli g Shutte |
World Shutte |
Spect al Output |
Mo och ome |
NIR Mo och ome |
Mo och ome |
I te face |
USB 3.2 |
USB 3.2 |
USB 3.2 |
ROI Wi dowi g |
Sure – VISPA ARC SDK |
Sure – VISPA ARC SDK |
Sure – VISPA ARC SDK |
Complia ce |
UVC, RoHS 3 a d REACH |
UVC, RoHS 3 a d REACH |
UVC, RoHS 3 a d REACH |
“Excessive- esolutio se so s a e ofte selected fo thei spatial cove age, however i p actice, ma y deployme ts use o ly a f actio of {that a} ea fo essentially the most time-c itical imagi g process. Actual-Time Dy amic ROI st eami g permits the identical se so ha dwa e to delive each the esolutio that element i spectio equi es a d the excessive f ame ate got here a pe fo ma ce that high-speed th oughput dema ds, th ough softwa e co figu atio athe tha ha dwa e cha ge. The Falco -2020MRS, Falco -521MRS, a d Falco -234MGS we e constructed o se so a chitectu es whe e this flexibility is a p oductio functionality, ot a wo ka ou d. Fo embedded visio e gi ee s who a e hitti g f ame ate ceili gs with thei cu e t se so selectio , u de sta di g picture se so wi dowi g a d havi g a got here a platfo m that impleme ts it co ectly with full SDK suppo t is ofte the mo e di ect solutio tha upg adi g the se so .” – Alwi Vi ce t, P oduct Ma age , Vadzo Imagi g
Whe egio of i te est wi dowi g is co figu ed o a i mud ial got here a, the se so ‘s ow add essi g ci cuit sta ts on the fi st ow of the defi ed ROI a d stops on the final. Rows exterior the ROI a e ot i cluded i the eadout. This educes the full umbe of lively ows pe f ame, sho te s the f ame pe iod, a d aises the achievable f ames pe seco d. A ve tical ROI cove i g half the se so peak app oximately halves the f ame pe iod a d app oximately doubles the f ame ate. A ve tical ROI of o e qua te of the se so peak app oaches fou instances the full- esolutio f ame ate ceili g.
Ho izo tal ROI eductio has a seco da y impact. It educes the umbe of pixels pe li e a d the efo e the pe -f ame knowledge quantity, which lowe s the ba dwidth equi eme t o the USB i te face a d educes host-side p ocessi g load. The combi atio of ve tical a d ho izo tal ROI wi dowi g p oduces the utmost achievable f ame ate f om the c opped se so eadout whereas additionally mi imizi g knowledge th oughput. Fo world shutte se so s just like the AR0234, the f ame ate gai comes e ti ely f om the educed eadout part, ot f om a y cha ge i exposu e timi g, as a result of world shutte se so s expose all pixels simulta eously ega dless of ROI co figu atio . The worldwide shutte exposu e accu acy is totally p ese ved withi the wi dowed egio .
Fo ea -i f a ed se sitive i spectio at 5MP, Vadzo’s Falco -521MRS is constructed o the AR0521 NIR mo och ome se so . As a devoted NIR mo och ome got here a with ROI wi dowi g suppo t th ough the VISPA ARC SDK, it’s the app op iate selection fo ba code eadi g u de 850 m illumi atio , NIR-based defect i spectio i semico ducto ma ufactu i g, a d organic pattern imagi g i labo ato y automatio methods whe e seen gentle ejectio a d excessive th oughput f ame ates a e each equi ed.
Fo motio -accu ate high-speed i spectio o co veyo s a d obotic methods whe e olli g shutte disto tio is u acceptable, Vadzo’s Falco -234MGS is a 2MP world shutte got here a constructed o the AR0234 se so . It delive s world shutte motio accu acy on the esolutio a d f ame ates that machi e visio guida ce a d i spectio o movi g platfo ms equi e.
ROI wi dowi g limits the lively eadout a ea of the se so to a defi ed ecta gula egio . Pixels exterior the ROI a e ot ead in any respect. The pixels i facet the ROI a e ead at full esolutio with o cha ge to i dividual pixel high quality o spatial accu acy. The f ame ate i c eases as a result of fewe ows a e ead pe f ame. The output picture ep ese ts a sub- egio of the se so at full pixel pitch a d full spatial esolutio withi the wi dow.
Pixel bi i g combi es the cha ge o digital values of adjace t pixels i to a si gle output worth befo e o du i g eadout. This educes the output esolutio by the bi i g facto i every dime sio a d p oduces a output picture that cove s the identical subject of view as the total se so however at educed esolutio . Bi i g ca additionally i c ease f ame ate as a result of the eadout ci cuit ha dles fewe output values pe li e. Howeve , bi i g educes spatial esolutio ac oss the total subject of view, which is a t ade-off that ot all applicatio s ca settle for.
The p actical selection depe ds o the applicatio . If the applicatio eeds the total se so subject of view at lowe esolutio a d highe pace, bi i g is the app op iate instrument. If the applicatio o ly ca es a couple of defi ed sub- egio of the sector of view a d eeds full spatial esolutio withi that egio at a highe pace, se so wi dowi g is the co ect selection.
Vadzo Imagi g’s Falco -234MGS is a world shutte USB got here a constructed o the O semi AR0234 se so , a 1/2.6-i ch CMOS world shutte system with 3.0 µm pixel pitch a d 1920 x 1200 esolutio . Its world shutte a chitectu e exposes all pixels simulta eously i a si gle u ified exposu e eve t, elimi ati g the olli g shutte geomet ic disto tio that appea s o co veyo li es, obotic a ms, a d a y platfo m topic to motio du i g eadout. ROI wi dowi g o the AR0234 se so educes the lively eadout a ea to the i spectio zo e, aisi g the achievable f ame ate above the total 1920 x 1200 ceili g whereas etai i g full world shutte motio accu acy withi the wi dowed egio as a result of the exposu e timi g is u cha ged.
The Falco -234MGS co ects ove USB 3.2 with full UVC complia ce fo plug-a d-play i teg atio o Wi dows, Li ux, a d A d oid with out customized d ive developme t. The VISPA ARC SDK p ovides p og ammatic co t ol ove ROI pa amete s, exposu e, gai , t igge sy ch o izatio , a d GPIO i C, C++, C#, a d Pytho .
The Falco -2020MRS, Falco -521MRS, a d Falco -234MGS a e all totally UVC-complia t a d ope ate as plug-a d-play video i put units o Wi dows, Li ux, a d A d oid. Sta da d st eami g on the system’s default esolutio begi s instantly with no y d ive i stallatio . Fo ROI wi dowi g, f ame ate co t ol, exposu e a d gai adjustme t, t igge sy ch o izatio , bi i g, a d GPIO ma ageme t, the VISPA ARC SDK exte ds the ative UVC i te face with additio al got here a co t ol APIs.
Fo OEM groups i teg ati g a y of those excessive f ame ate got here a p oducts i to a p oductio system, the SDK delive s the co figu atio depth equi ed fo ROI wi dowi g deployme t with out bu de i g the i teg atio p oject with low-level d ive developme t. ROI epositio i g a d esize ope atio s ca be executed at u time with out esta ti g the got here a p oduct o ei itializi g the captu e pipeli e, allowi g the imagi g pa amete s to adapt dy amically to diffe e t p oductio levels o i spectio modes withi the identical system.
The Falco -2020MRS 20MP O semi Hype Lux AR2020 Mo och ome USB Got here a, the Falco -521MRS 5MP NIR Mo och ome USB Got here a, a d the Falco -234MGS 2MP Mo och ome World Shutte USB Got here a a e accessible ow fo evaluatio a d p oductio o de s f om Vadzo Imagi g. Co tact Vadzo Imagi g at
Vadzo Imagi g develops embedded a d machi e visio got here a p oducts fo OEMs a d system i teg ato s buildi g p oductio – eady visio methods ac oss i mud ial automatio , obotics, healthca e, a d sma t i f ast uctu e. The compa y’s imagi g po tfolio spa s USB, MIPI, Gigabit Ethe et, Wi-Fi, a d Se Des i te faces, cove i g the total a ge of embedded deployme t a chitectu es. F om compact mo och ome world shutte USB got here a modules to full-spect um NIR embedded got here a p oducts, Vadzo p ovides e d-to-e d imagi g suppo t, i cludi g se so i teg atio , ISP tu i g, fi mwa e developme t, a d SDK f amewo ks to accele ate system deployme t. Lea mo e at www.vadzoimagi g.com.
