Adaptive weighted fuzzy mean filter

A new fuzzy filter for the removal of additive impulse noise, called the adaptive weighted fuzzy mean (AWFM) filter, is proposed and analyzed in this paper. The AWFM is an extensive version of weighted fuzzy mean (WFM) filter and its filtered output signal is either the output of WFM or the processed signal by the detection algorithm. This filter gives very superior performance compared with conventional filters when evaluated by mean absolute error (MAE), mean square error (MSE) and subjective evaluation criteria. For dedicated hardware implementation, AWFM is also much simpler than the conventional median filter.