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Soccer Field Image Segmentation using a CLPSO-based Fuzzy Approach

A new method for color image segmentation using fuzzy logic is proposed in this paper. Our aim here is to automatically produce a fuzzy system for  color classification and image segmentation with least number of rules and minimum error rate. We use comprehensive learning particle swarm optimization (CLPSO) technique to find optimal fuzzy rules and membership functions. Particle swarm optimization is a sub class of evolutionary  algorithms that has been inspired from social behavior of fishes, bees, birds, etc, that live together in colonies. Here each particle of the swarm codes a set of fuzzy rules. During evolution, a population member tries to maximize a fitness criterion which is here high classification rate and small number of rules. Finally, particle with the highest fitness value is selected as the best set of fuzzy rules for image segmentation. Our results, using this  method for soccer field image segmentation in Robocop contests shows 89% performance. Less computational load is needed when using this  method compared with other methods like ANFIS, because it generates a smaller number of fuzzy rules. Large train dataset and its variety, makes  the proposed method invariant to illumination noise.

M. Hamidi and A. Borji

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