Two step impulse noise suppresion in greyscale images using ANFIS

This paper proposes a two-step impulse noise suppression filter, in which detection is followed by filtering. Adaptive network-based fuzzy inference system (ANFIS) is used in detection step and 3×3 median filter is used in filtering step. ANFIS employed is a good replacement of human expert. Our proposed method is time efficient and removes impulse noise while maintaining fine details of image.