SciDVS: A Scientific Event Camera with 1.7% Temporal Contrast Sensitivity at 0.7 lux
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| Název: | SciDVS: A Scientific Event Camera with 1.7% Temporal Contrast Sensitivity at 0.7 lux |
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| Autoři: | Graca, Rui, Zhou, Sheng, McReynolds, Brian, Delbruck, Tobi |
| Přispěvatelé: | University of Zurich, Graca, Rui |
| Zdroj: | 2024 IEEE European Solid-State Electronics Research Conference (ESSERC). :205-208 |
| Publication Status: | Preprint |
| Informace o vydavateli: | IEEE, 2024. |
| Rok vydání: | 2024 |
| Témata: | Physics - Instrumentation and Detectors, 1708 Hardware and Architecture, 2208 Electrical and Electronic Engineering, Image and Video Processing (eess.IV), FOS: Electrical engineering, electronic engineering, information engineering, 570 Life sciences, biology, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Electrical Engineering and Systems Science - Image and Video Processing, 10194 Institute of Neuroinformatics |
| Popis: | This paper reports a Dynamic Vision Sensor (DVS) event camera that is 6x more sensitive at 14x lower illumination than existing commercial and prototype cameras. Event cameras output a sparse stream of brightness change events. Their high dynamic range (HDR), quick response, and high temporal resolution provide key advantages for scientific applications that involve low lighting conditions and sparse visual events. However, current DVS are hindered by low sensitivity, resulting from shot noise and pixel-to-pixel mismatch. Commercial DVS have a minimum brightness change threshold of >10%. Sensitive prototypes achieved as low as 1%, but required kilo-lux illumination. Our SciDVS prototype fabricated in a 180nm CMOS image sensor process achieves 1.7% sensitivity at chip illumination of 0.7 lx and 18 Hz bandwidth. Novel features of SciDVS are (1) an auto-centering in-pixel preamplifier providing intrascene HDR and increased sensitivity, (2) improved control of bandwidth to limit shot noise, and (3) optional pixel binning, allowing the user to trade spatial resolution for sensitivity. Presented at ESSERC 2024 |
| Druh dokumentu: | Article Other literature type Conference object |
| Popis souboru: | 2409.09648v1.pdf - application/pdf |
| DOI: | 10.1109/esserc62670.2024.10719521 |
| DOI: | 10.5167/uzh-268755 |
| DOI: | 10.48550/arxiv.2409.09648 |
| Přístupová URL adresa: | http://arxiv.org/abs/2409.09648 |
| Rights: | STM Policy #29 CC BY NC ND |
| Přístupové číslo: | edsair.doi.dedup.....d216223557e05309ffad9e4ed5df0035 |
| Databáze: | OpenAIRE |
Nájsť tento článok vo Web of Science | Abstrakt: | This paper reports a Dynamic Vision Sensor (DVS) event camera that is 6x more sensitive at 14x lower illumination than existing commercial and prototype cameras. Event cameras output a sparse stream of brightness change events. Their high dynamic range (HDR), quick response, and high temporal resolution provide key advantages for scientific applications that involve low lighting conditions and sparse visual events. However, current DVS are hindered by low sensitivity, resulting from shot noise and pixel-to-pixel mismatch. Commercial DVS have a minimum brightness change threshold of >10%. Sensitive prototypes achieved as low as 1%, but required kilo-lux illumination. Our SciDVS prototype fabricated in a 180nm CMOS image sensor process achieves 1.7% sensitivity at chip illumination of 0.7 lx and 18 Hz bandwidth. Novel features of SciDVS are (1) an auto-centering in-pixel preamplifier providing intrascene HDR and increased sensitivity, (2) improved control of bandwidth to limit shot noise, and (3) optional pixel binning, allowing the user to trade spatial resolution for sensitivity.<br />Presented at ESSERC 2024 |
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| DOI: | 10.1109/esserc62670.2024.10719521 |