NDLI: A CMOS Expansion/Contraction Motion Sensor with a Retinal Processing Circuit for Z-motion Detection Applications

Content Provider	IEEE Xplore Digital Library
Author	Chung-Yu Wu Chien-Ta Huang
Copyright Year	2007
Description	Author affiliation: Inst. of Electron., National Chiao Tung Univ., Hsinchu (Chung-Yu Wu; Chien-Ta Huang)
Abstract	A design of CMOS expansion/contraction motion sensor based on the artificial retinal sensor array and digital correlation circuitry for real-time detecting object motion and velocity in the longitudinal +Z/-Z-directions (Z-motion) is proposed. To cope with the non-uniform nature in optic field of Z-motion, we compute the correlation between one set of output of retinal sensors and the delayed output of the other set of far-end sensors at progressive increasing distances across the chip for motion and velocity detection. Sweeping the correlation delay value in one signal path of the correlator, the chip can indicate the strongest correlation when the correlation delay is tuned to match the actual velocity. Behavior-level MATLAB simulations have been performed to successfully validate the functionality of the proposed motion detection method using expanding or contracting motion images that are incurred from an out-bound or in-bound moving object at a constant Z-velocity. The proposed motion sensor consists of 1448 sensor pixels placed on thirty-two evenly spaced divergent axes with 25 correlator outputs on each axis. Z-motion and velocity detection is performed based on the maximum likelihood (ML) detection using the 25 correlators output of all 32 axes. The chip is designed in 0.35-mum CMOS technology and the core occupies approximately 5600 times 5600 $mum^{2}$ with a fill factor of 11%.
Starting Page	3087
Ending Page	3090
File Size	520467
Page Count	4
File Format	PDF
ISBN	1424409209
DOI	10.1109/ISCAS.2007.378061
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-05-27
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	CMOS process Retina Circuits Motion detection Sensor arrays Optical sensors Delay Correlators Maximum likelihood detection CMOS technology
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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