Moore, Andrew and Koch, Christof (1991) Multiplication-based analog motion detection chip. In: Visual Information Processing: From Neurons to Chips. Proceedings of SPIE. No.1473. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, pp. 66-75. ISBN 9780819405821. https://resolver.caltech.edu/CaltechAUTHORS:20181213-143632801
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Abstract
Novel use of an analog motion detection circuit is presented. The circuit, developed by Tanner and Mead, computes motion by dividing the time derivative of intensity by its spatial derivative; the four-quadrant division is realized with a multiplier within a negative feedback loop. The authors have opened the loop and characterized the circuit as a multiplication-based motion detector, in which the output is the product of the temporal and spatial derivatives of intensity, for various light levels and various moving patterns. An application to the time-to- contact computation is presented.
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| Additional Information: | © 1991 Society of Photo-Optical Instrumentation Engineers (SPIE). We are grateful to John Tanner and John Harris for helpful discussions, to Carver Mead for support and encouragement, to Hewlett-Packard for computing support in the Mead lab, and to DARPA for MOSIS fabrication services. A.M. was supported by fellowships from the Parsons Foundation and the Pew Charitable Trust and by research assistantships from Office of Naval Research, the Joint Tactical Fusion Program, the Center for Research in Parallel Computation, and the Program in Advanced Technologies, which was sponsored by General Motors and TRW. We gratefully acknowledge support from the Hughes Aircraft AT Research Lab and the Rockwell International Science Center for chip efforts in the Koch lab. | ||||||||||||||||||||||||
| Group: | Koch Laboratory (KLAB) | ||||||||||||||||||||||||
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| Series Name: | Proceedings of SPIE | ||||||||||||||||||||||||
| Issue or Number: | 1473 | ||||||||||||||||||||||||
| DOI: | 10.1117/12.45542 | ||||||||||||||||||||||||
| Record Number: | CaltechAUTHORS:20181213-143632801 | ||||||||||||||||||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20181213-143632801 | ||||||||||||||||||||||||
| Official Citation: | Andrew J. Moore, Christof Koch, "Multiplication-based analog motion detection chip," Proc. SPIE 1473, Visual Information Processing: From Neurons to Chips, (9 July 1991); doi: 10.1117/12.45542 | ||||||||||||||||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||||||||||||||
| ID Code: | 91813 | ||||||||||||||||||||||||
| Collection: | CaltechAUTHORS | ||||||||||||||||||||||||
| Deposited By: | George Porter | ||||||||||||||||||||||||
| Deposited On: | 19 Dec 2018 21:03 | ||||||||||||||||||||||||
| Last Modified: | 16 Nov 2021 03:44 |
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