Computing motion using analog VLSI vision chips: an experimentalcomparison among four approaches
Koch, C.
Moore, A.
Bair, W.
Horiuchi, T.
Bishofberger, B.
Lazzaro, J.
Comput. & Neural Syst. Program, California Inst. of Technol., Pasadena, CA;
This paper appears in: Visual Motion, 1991., Proceedings of the IEEE Workshop on
Publication Date: 7-9 Oct 1991
On page(s): 312-324
Meeting Date: 10/07/1991 - 10/09/1991
Location: Princeton, NJ, USA
ISBN: 0-8186-2153-2
References Cited: 44
INSPEC Accession Number: 4358634
Digital Object Identifier: 10.1109/WVM.1991.212769
Current Version Published: 2002-08-06
Abstract
The authors have designed, built and tested a number of analog
CMOS VLSI circuits for computing 1D motion from the time-varying
intensity values provided by an array of on-chip phototransistors. The
authors present experimental data for three such circuits and discuss
their relative performance. One circuit approximates the correlation
model, one the gradient model, while a third chip uses resistive grids
to compute zerocrossings to be tracked over time by a separate digital
processor. All circuits integrate image acquisition with image
processing functions and compute velocity in real time. Finally, for
comparison, the authors also describe the performance of a simple motion
algorithm using off-the-shelf components
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