Abstract
We propose analog CMOS circuits that implement Wilson-Cowan (WC) oscillators. The WC circuits collectively produce various dissipative patterns (e.g., Turing patterns and spiral ones) on the chip. The chip consists of i) reaction circuits that emulate elementary interactions between neurons (or chemical substances) and ii) diffusion devices that imitate synapses (or chemical diffusion of the substances). Utilizing the dissipative properties of the chip, we developed novel image-processing systems. In this report, we show that the chip produces a stable fingerprint pattern without noises and unnatural discontinuities of wrinkles, when a real fingerprint image was given to the chip as initial states. These results imply future potentialities of RD chips in engineering applications.
