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A 100-dB-DR Predictive-Integration CMOS Image Sensor for Laser Rangefinding

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4 Author(s)
Wei Gao ; Dept. of Comput. Sci. & Eng., York Univ., Toronto, ON, Canada ; Liscombe, M. ; Hornsey, R. ; Beraldin, J.-A.

A CMOS image sensor for laser-spot detection in an optical triangulation-based 3-D vision system is presented in this paper. Two aligned linear arrays, namely, a high-dynamic-range (DR) array and a winner-take-all array, independently perform DR enhancement and region-of-interest control. A new predictive integration scheme is suggested to find the adaptive integration time without searching all possible subintegration periods. It has been demonstrated that the DR of the chip (typically ~50 dB in the 0.18-mum digital process used) can be enhanced to 100 dB with six subintegration periods.

Published in:

Electron Devices, IEEE Transactions on  (Volume:56 ,  Issue: 12 )

Date of Publication:

Dec. 2009

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