A CMOS optical sensor with on focal plane programmable spatio-temporal filters

Author

Massari, N. ; Gottardi, M. ; Simoni, A.

Author_Institution

ITC-Irst, Italy

fYear

2004

fDate

24-27 Oct. 2004

Firstpage

1281

Abstract

A prototype of 34×34 pixels vision sensor with on focal plane image processing is presented. The sensor performs a wide range of image filtering over a 3×3 pixel kernel, based on two operations: absolute value of the difference (AVD) between two signals and signal accumulation (SA). These two functions are implemented at pixel-level thanks to a high pixel connectivity, allowing both pixel parallel computation with large flexibility in coefficients assignment. The pixel occupies 35×35 μm² of chip area with a fill factor of 20%. The total dynamic range of the sensor is 98 dB. The array was fabricated in 0.35 μm CMOS technology and consumes 6 mW @ 3.3 V.

Keywords

CMOS image sensors; focal planes; image processing; integrated circuit measurement; parallel processing; programmable filters; 0.35 micron; 1156 pixel; 3.3 V; 34 pixel; 35 micron; 6 mW; CMOS optical sensor; CMOS technology; SA; VD; absolute value of the difference operations; chip area; coefficients assignment flexibility; fill factor; on focal plane image processing; on focal plane programmable spatio-temporal filters; pixel connectivity; pixel kernel; pixel parallel computation; pixel-level function implementation; sensor dynamic range; sensor image filtering; signal accumulation; vision sensor; CMOS image sensors; CMOS technology; Filtering; Image processing; Image sensors; Kernel; Optical filters; Optical sensors; Pixel; Prototypes;

fLanguage

English

Publisher

ieee

Conference_Titel

Sensors, 2004. Proceedings of IEEE

Print_ISBN

0-7803-8692-2

Type

conf

DOI

10.1109/ICSENS.2004.1426415

Filename

1426415