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11 October 2005 Design of readout circuit with noise tolerant edge detection for InSb MWIR detector
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Abstract
In this paper, a readout circuit (ROIC) utilizing a novel noise tolerant edge detection technique for InSb medium wavelength infrared focal plane arrays (MWIR FPAs) is studied. The use of a noise tolerant edge detection algorithm eliminates the need for a pixel-level non-uniformity correction circuit. In addition, the proposed circuit's simple structure allows the processing circuits to be integrated within a shared 2 by 2 pixel area. The proposed method shows better performance for the Gaussian and salt & pepper noise than other conventional approaches. A good edge map is obtained in general InSb MWIR detectors which have 99.5% operability and about 5% non-uniformity of the pixel current. Basic operation of the fabricated noise tolerant edge detection circuit is demonstrated.
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Chul Bum Kim, Doo Hyung Woo, Yong Soo Lee, and Hee Chul Lee "Design of readout circuit with noise tolerant edge detection for InSb MWIR detector", Proc. SPIE 5987, Electro-Optical and Infrared Systems: Technology and Applications II, 59870O (11 October 2005); https://doi.org/10.1117/12.629648
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