Abstract
A current-mode circuit to extract the feature of the target objects is proposed in this letter. From a color image with complex background, the proposed circuit can realize the feature extraction by using fuzzy scheme. Applying the fuzzy processing to RGB components of a color image, the proposed circuit can realize low sensitivity to changes of amount of light as well as noise of the background. Furthermore, thanks to the circuit design by using current-mode techniques, the proposed circuit can achieve low sensitivity to both temperature variations and supply voltage variations. 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.
