23,000-Exposures/s 360fps-Readout Software-Defined Image Sensor with Motion-Adaptive Spatially Varying Imaging Speed

The software-defined VGA image sensor adapts to fast changes in the scene, both locally and globally, by taking advantage of programmable-size/speed super-pixels and scalable-rate SAR ADCs, respectively. Each super-pixel includes up to 8×8 pixels exposed in a rapid sequence within one frame period,...

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Bibliographic Details
Published in:	2024 IEEE Symposium on VLSI Technology and Circuits (VLSI Technology and Circuits) pp. 1 - 2
Main Authors:	Rangel, Roberto, Sun, Xiaonong, Barman, Ayandev, Gulve, Rahul, Bajic, Savo, Wang, Jingmin, Wang, Harry, Lindel, David B., Kutulakos, Kiriakos N., Genov, Roman
Format:	Conference Proceeding
Language:	English
Published:	IEEE 16-06-2024
Subjects:	Cameras Costs Image resolution Image sensors Very large scale integration
Online Access:	Get full text
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Summary:	The software-defined VGA image sensor adapts to fast changes in the scene, both locally and globally, by taking advantage of programmable-size/speed super-pixels and scalable-rate SAR ADCs, respectively. Each super-pixel includes up to 8×8 pixels exposed in a rapid sequence within one frame period, yielding a 64x maximum boost of the exposure rate over the output rate, without the corresponding increase in the ADC power. At 360fps readout, this corresponds to over 23,000 exposures/s while using only 24.5mW, and comes at the cost of moderately lower local resolution, only in the regions with the fast changes in the scene. The 54fJ-FoM SAR ADC allows for scaling down to the 30fps 'slow' mode, yielding an additional factor of 12x savings in the output data and camera digital power, and 30% savings in the ADC power.
ISSN:	2158-9682
DOI:	10.1109/VLSITechnologyandCir46783.2024.10631335