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Proceedings Paper

Single-chip camera modules for mosaic image sensor
Author(s): Canaan Sungkuk Hong; Richard I. Hornsey; Paul J. Thomas
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Paper Abstract

Mosaic imagers increase field of view cost effectively, by connecting single-chip cameras in a coordinated manner equivalent to a large array o9f sensors. Components that would conventionally have been in separate chips can be integrated on the same focal plane by using CMOS image sensors (CIS). Here, a mosaic imaging system is constructed using CIS connected through a bus line which shares common input controls and output(s), and enables additional cameras to be inserted with little system modification. The image- bus consumes relatively low power by employing intelligent power control techniques. However, the bandwidth of the bus will still limit the number of camera modules that can be connected in the mosaic array. Hence, signal-processing components, such as data reduction and encoding, are needed on-chip in order to achieve high readout speed. One such method is described in which the number and sizes of pixel clusters above an intensity threshold are determined using a novel 'object positioning algorithm' architecture. This scheme identifies significant events or objects in the scene before the camera's data are transmitted over the bus, thereby reducing the effective bandwidth. In addition, basic modules in single-chip camera are suggested for efficient data transfer and power control in mosaic imager.

Paper Details

Date Published: 15 May 2001
PDF: 12 pages
Proc. SPIE 4306, Sensors and Camera Systems for Scientific, Industrial, and Digital Photography Applications II, (15 May 2001); doi: 10.1117/12.426959
Show Author Affiliations
Canaan Sungkuk Hong, Univ. of Waterloo (United States)
Richard I. Hornsey, Univ. of Waterloo (Canada)
Paul J. Thomas, Topaz Technology, Inc. (Canada)

Published in SPIE Proceedings Vol. 4306:
Sensors and Camera Systems for Scientific, Industrial, and Digital Photography Applications II
Nitin Sampat; Morley M. Blouke; John Canosa; John Canosa; Nitin Sampat, Editor(s)

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