標題: A CMOS Focal-Plane Motion Sensor With BJT-Based Retinal Smoothing Network and Modified Correlation-Based Algorithm
作者: Wu, Chung-Yu
Huang, Kuan-Hsun
交大名義發表
National Chiao Tung University
關鍵字: Direction sensor;focal-plane motion sensor;motion sensor;retinal processing circuit;velocity sensor;vision chip
公開日期: 1-十二月-2002
摘要: This work presents and implements a CMOS real-time focal-plane motion sensor intended to detect the global motion, using the bipolar junction transistor (BJT)-based retinal smoothing network and the modified correlation-based algorithm. In the proposed design, the BJT-based retinal photoreceptor and smoothing network are adopted to acquire images and enhance the contrast of an image while the modified correlation-based algorithm is used in signal processing to determine the velocity and direction of the incident image. The deviations of the calculated velocity and direction for different image patterns are greatly reduced by averaging the correlated output over 16 frame-sampling periods. The proposed motion sensor includes a 32 32 pixel array with a pixel size of 100 x 100 mu m(2). The fill factor is 11.6% and the total chip area is 4200 x 4000 mu m(2). The dc power consumption is 120 mW at 5 V in the dark. Experimental results have successfully confirmed that the proposed motion sensor can work with different incident images and detect a velocity between 1 pixel/s and 140,000 pixels/s via controlling the frame-sampling period. The minimum detectable displacement in a frame-sampling period is 5 mu m. Consequently, the proposed high-performance new motion sensor can be applied to many real-time motion detection systems.
URI: http://dx.doi.org/10.1109/JSEN.2002.807774
http://hdl.handle.net/11536/16990
ISSN: 1530-437X
DOI: 10.1109/JSEN.2002.807774
期刊: IEEE SENSORS JOURNAL
Volume: 2
Issue: 6
起始頁: 549
結束頁: 558
顯示於類別:期刊論文


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