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Published 1993 | Published
Book Section - Chapter Open

Object-Based Analog VLSI Vision Circuits

Abstract

We describe two successfully working, analog VLSI vision circuits that move beyond pixel-based early vision algorithms. One circuit, implementing the dynamic wires model, provides for dedicated lines of communication among groups of pixels that share a common property. The chip uses the dynamic wires model to compute the arclength of visual contours. Another circuit labels all points inside a given contour with one voltage and all other with another voltage. Its behavior is very robust, since small breaks in contours are automatically sealed, providing for Figure-Ground segregation in a noisy environment. Both chips are implemented using networks of resistors and switches and represent a step towards object level processing since a single voltage value encodes the property of an ensemble of pixels.

Additional Information

© 1993 Morgan Kaufmann. This Work is supported by the National Science Foundation, the Office of Naval Research and Rockwell International Science Center. We thank MOSIS for all chip fabrication. JGH is supported by an NSF postdoctoral fellowship.

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August 20, 2023
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January 13, 2024