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Real-time motion detection using an analog VLSI zero-crossing chip

Bair, Wyeth and Koch, Christof (1991) Real-time motion detection using an analog VLSI zero-crossing chip. In: Visual Information Processing: From Neurons to Chips. Proceedings of SPIE. No.1473. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, pp. 59-65. ISBN 9780819405821.

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The authors have designed and tested a one-dimensional 64 pixel, analog CMOS VLSI chip which localizes intensity edges in real-time. This device exploits on-chip photoreceptors and the natural filtering properties of resistive networks to implement a scheme similar to and motivated by the Difference of Gaussians (DOG) operator proposed by Marr and Hildreth (1980). The chip computes the zero-crossings associated with the difference of two exponential weighting functions and reports only those zero-crossings at which the derivative is above an adjustable threshold. A real-time motion detection system based on the zero- crossing chip and a conventional microprocessor provides linear velocity output over two orders of magnitude of light intensity and target velocity.

Item Type:Book Section
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URLURL TypeDescription
Koch, Christof0000-0001-6482-8067
Additional Information:© 1991 Society of Photo-Optical Instrumentation Engineers (SPIE). We thank Carver Mead for providing laboratory resources for the design, fabrication, and initial testing of this chip. Thanks also to Steve DeWeerth, Misha Mahowald, and John Harris for their help throughout the years. Our laboratory is partially supported by grants from the Office of Naval Research, the Rockwell International Science Center and the Hughes Aircraft Artificial Intelligence Center. Wyeth Bair is supported by a National Science Foundation Graduate Fellowship and performed some of this work at the Hughes Aircraft Al Center.
Group:Koch Laboratory (KLAB)
Funding AgencyGrant Number
Office of Naval Research (ONR)UNSPECIFIED
Rockwell International Science CenterUNSPECIFIED
Hughes Aircraft Artificial Intelligence CenterUNSPECIFIED
NSF Graduate Research FellowshipUNSPECIFIED
Series Name:Proceedings of SPIE
Issue or Number:1473
Record Number:CaltechAUTHORS:20181213-143632712
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Official Citation:Wyeth Bair, Christof Koch, "Real-time motion detection using an analog VLSI zero-crossing chip," Proc. SPIE 1473, Visual Information Processing: From Neurons to Chips, (9 July 1991); doi: 10.1117/12.45541
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:91812
Deposited By: George Porter
Deposited On:19 Dec 2018 19:21
Last Modified:16 Nov 2021 03:44

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