Horiuchi, Timothy K. and Bair, Wyeth and Bishofberger, Brooks and Moore, Andrew and Koch, Christof and Lazzaro, John Paul (1992) Computing motion using analog VLSI vision chips: An experimental comparison among different approaches. International Journal of Computer Vision, 8 (3). pp. 203-216. ISSN 0920-5691. http://resolver.caltech.edu/CaltechAUTHORS:20130816-103148678
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We have designed, built and tested a number of analog CMOS VLSI circuits for computing 1-D motion from the time-varying intensity values provided by an array of on-chip phototransistors. We present experimental data for two such circuits and discuss their relative performance. One circuit approximates the correlation model while a second chip uses resistive grids to compute zero-crossings to be tracked over time by a separate digital processor. Both circuits integrate image acquisition with image processing functions and compute velocity in real time. For comparison, we also describe the performance of a simple motion algorithm using off-the-shelf digital components. We conclude that analog circuits implementing various correlation-like motion algorithms are more robust than our previous analog circuits implementing gradient-like motion algorithms.
|Additional Information:||Cover Date: 1992-09-01. We thank Carver Mead for providing laboratory resources for the design and fabrication of the analog chips and Steve DeWeerth, John Harris, Andy Moore, and John Tanner for their help in getting these motion chips to work. We thank the Office of Naval Research, the National Science Foundation, Rockwell International Science Center, and Hughes Aircraft Corporation for financial support of VLSI research in our laboratory. W.B. was supported by a NSF Graduate Fellowship and performed some of the work described here at the Hughes Aircraft AI Center.|
|Group:||Koch Laboratory, KLAB|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||KLAB Import|
|Deposited On:||11 Mar 2010 06:06|
|Last Modified:||17 Oct 2015 02:59|
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