High-dynamic-range active pixel sensor

Thalis Anaxagoras; Nigel M. Allinson

doi:10.1117/12.525720

7 June 2004 High-dynamic-range active pixel sensor

Proceedings Volume 5301, Sensors and Camera Systems for Scientific, Industrial, and Digital Photography Applications V; (2004) https://doi.org/10.1117/12.525720
Event: Electronic Imaging 2004, 2004, San Jose, California, United States

Abstract

A new pixel structure for high dynamic range imaging is proposed. The internal pixel circuit resets the pixel each time the well capacity nears saturation and a counter, implemented in the pixel itself (or in an external memory), records the number of resets per integration time. The increase in the dynamic range is given by a factor of (m + 1) where m is the number of internal resets per integration time. The peak signal-to-noise ratio will be increased due to the effective increase in the well capacity. A multiple sampling technique can be used in the combination with this proposed structure to achieve a further increase in dynamic range.

Citation Download Citation

Thalis Anaxagoras and Nigel M. Allinson "High-dynamic-range active pixel sensor", Proc. SPIE 5301, Sensors and Camera Systems for Scientific, Industrial, and Digital Photography Applications V, (7 June 2004); https://doi.org/10.1117/12.525720

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