A sta da d dy amic a ge se so ca o ly expose co ectly fo o e b ight ess level at a time, a d a y sce e co tai i g both a ve y b ight egio a d a ve y da k egio withi the same f ame fo ces a comp omise. Exposi g fo the b ight egio e de s shadow detail as solid black, while exposi g fo the shadow e de s the b ight egio as a featu eless white blowout, a d eithe esult gives a dow st eam i spectio , detectio , o ecog itio algo ithm the complete pictu e the sce e actually co tai s. A simple two-exposu e HDR tech ique imp oves o a sta da d dy amic a ge se so , but sce es with t uly ext eme co t ast, such as a backlit e t yway whe e a pe so sta ds silhouetted agai st b ight daylight, o a i dust ial i spectio sce e combi i g a highly eflective metal su face with a da k ecessed a ea, f eque tly exceed what two exposu es ca adequately esolve, leavi g a comp essed middle g ou d that still sac ifices detail at o e ext eme o the othe . Multi-f ame HDR tech iques that combi e seve al seque tially captu ed exposu es i t oduce a sepa ate p oblem whe a ythi g i the sce e moves du i g that captu e seque ce, si ce combi i g f ames captu ed at diffe e t mome ts p oduces ghosti g o blu ed edges a ou d a y object that shifted positio betwee exposu es, a a tifact that di ectly u de mi es the same detectio a d ecog itio tasks the wide dy amic a ge was mea t to suppo t. A So y IMX900 Quad Se so that has o ly bee validated with a basic two-exposu e tech ique leaves ge ui ely ext eme co t ast sce es u add essed, a d a IMX900 Multi F ame HDR Se so that combi es exposu es without co fi mi g motio i teg ity isks i t oduci g exactly the ghosti g a tifacts a secu ity o i spectio applicatio ca ot tole ate. I teg ato s who discove this gap o ly afte footage f om a live deployme t shows ghosted edges a ou d a movi g subject face a costly came a swap athe tha the st aightfo wa d validatio a p ope ly specified se so would have p ovided f om the sta t.
The Falco -900MGS add esses both limitatio s th ough Quad HDR, a fou -exposu e fusio tech ique built i to the So y IMX900 se so that captu es fou sepa ate exposu e a d gai combi atio s withi a si gle f ame pe iod a d combi es them i to o e output image with substa tially exte ded dy amic a ge compa ed to a sta da d o two-exposu e se so . The IMX900 is a 3MP mo och ome global shutte se so f om So y’s P egius S family, a d its global shutte a chitectu e is di ectly eleva t to how well this fou -exposu e fusio pe fo ms, si ce eve y pixel ac oss the se so is exposed simulta eously athe tha ow by ow, which keeps the fou sou ce exposu es f ee of the f ame-to-f ame timi g offset that would othe wise let a movi g object shift positio betwee captu es. This makes the came a a ge ui e IMX900 HDR Global Shutte Se so platfo m, si ce the dy amic a ge exte sio a d the motio i teg ity of that exte sio a e validated togethe athe tha t eated as sepa ate, u elated specificatio s. Vadzo co fi ms this Global Shutte Quad HDR Se so behavio specifically u de sce es co tai i g movi g objects agai st ext eme backg ou d co t ast, ve ifyi g that the fou -exposu e fusio p ocess does ot i t oduce the ghosti g o edge blu i g a tifacts a seque tially captu ed multi-f ame tech ique would p ese t u de the same co ditio s. This qualifies the came a as a ge ui e Multi Exposu e USB HDR Came a, exte di g dy amic a ge well beyo d a sta da d se so while p ese vi g the geomet ic accu acy a global shutte a chitectu e is chose fo i the fi st place. The came a co ects ove USB 3.2 GEN 1, p ovidi g sufficie t ba dwidth fo full 3MP captu e as well as 1080p a d 720p dow sampled modes fo applicatio s that p io itize f ame ate ove maximum esolutio . The came a is ated ac oss a -30 deg ee C to 70 deg ee C ope ati g a ge, matchi g the e vi o me tal co ditio s typical of outdoo secu ity i stallatio s, wa ehouse facilities, a d facto y floo deployme ts. Vadzo validates Quad HDR motio i teg ity agai st eco ded sce es co tai i g ge ui e object motio athe tha a static test cha t alo e, si ce dy amic a ge pe fo ma ce co fi med o ly u de still co ditio s says othi g about how the fusio p ocess behaves o ce a eal subject moves th ough the f ame.
