Title :
A 1/3" VGA linear wide dynamic range CMOS image sensor implementing a predictive multiple sampling algorithm with overlapping integration intervals
Author :
Acosta-Serafini, Pablo M. ; Masaki, Ichiro ; Sodini, Charles G.
Author_Institution :
MIT, Cambridge, MA, USA
Abstract :
An image sensor implementing a novel algorithm that linearly increases the illumination dynamic range of solid-state pixels is presented. Optimal exposure is achieved with a predictive pixel saturation decision that allows for multiple integration intervals of different duration to run concurrently for different pixels while keeping the sensor frame rate constant. A proof-of-concept chip was fabricated in a 0.18 μm, 5M CMOS process. Minimal alterations to standard pixels are needed to provide the added functionality thus fill factor is not sacrificed. Measured data corroborates the algorithm functionality.
Keywords :
CMOS image sensors; dynamic response; optimisation; 0.18 micron; 0.333 inch; VGA linear CMOS image sensor; exposure optimization; fill factor; multiple integration intervals; overlapping integration intervals; pixel illumination dynamic range; predictive multiple sampling algorithm; predictive pixel saturation decision; sensor frame rate; solid-state pixels; wide dynamic range image sensor; CMOS image sensors; CMOS process; Dynamic range; Image sampling; Image sensors; Lighting; Pixel; Prediction algorithms; Semiconductor device measurement; Solid state circuits;
Conference_Titel :
Custom Integrated Circuits Conference, 2003. Proceedings of the IEEE 2003
Print_ISBN :
0-7803-7842-3
DOI :
10.1109/CICC.2003.1249446
