Design of a fuzzy based circular pattern recognition circuit using current-mode techniques

Abstract

A fuzzy based circuit to recognize circular patterns is proposed in this paper. The proposed algorithm calculates the center coordinates of the target patterns. The simple algorithm and exemption from the use of template patterns as well as multipliers enable the proposed circuit to implement on the hardware of an economical scale. Furthermore, the circuit design by using current-mode techniques provides easy extendability of the circuit and efficient pattern recognition with high-speed. The validity of the proposed algorithm and the circuit design is confirmed by computer simulations. The proposed pattern recognition circuit is integrable by a standard CMOS technology.