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Proceedings Paper

Real-time color imaging with a CMOS sensor having stacked photodiodes
Author(s): David L. Gilblom; Sang Keun Yoo; Peter Ventura
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Paper Abstract

High-performance color image acquisition has heretofore relied on color video cameras using multiple image sensors mounted on spectral separation prisms to provide geometrically accurate color data free of reconstruction artifacts. Recently, a CMOS image sensor has been developed that incorporates three complete planes of photodiodes in a single device to provide color separation without the need for external optical elements. The first commercial device based on this technology has 1512 x 2268 three-color photosites on 9.12 micron centers and includes provisions for combining pixels in X and Y, region-of interest selection and sparse scanning. The camera described in this paper operates the sensor in a variety of scan modes offering tradeoffs between resolution, coverage and speed. In this camera, a 128x128 raster of either a matrix of this size or binned from a large area can be scanned at nearly 150 frames per second and a single 2048-element line can be scanned at 7 KHz. At full resolution, the image sensor will acquire four frames per second. The scan configuration can be reloaded in less than 50 microseconds permitting mod e changes on the fly.

Paper Details

Date Published: 6 February 2004
PDF: 11 pages
Proc. SPIE 5210, Ultrahigh- and High-Speed Photography, Photonics, and Videography, (6 February 2004); doi: 10.1117/12.506206
Show Author Affiliations
David L. Gilblom, Alternative Vision Corp. (United States)
Sang Keun Yoo, HanVision Co., Ltd. (South Korea)
Peter Ventura, Foveon, Inc. (United States)

Published in SPIE Proceedings Vol. 5210:
Ultrahigh- and High-Speed Photography, Photonics, and Videography
Donald R. Snyder, Editor(s)

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