Comparative Analysis of Median and Average Filters in Impulse Noise Suppression
Luyao Shi, Yang Chen, Wenlong Yuan, Libo Zhang, Ben-qiang Yang, Huazhong Shu, Limin Luo, Jean-Louis Coatrieux · Fluctuation and Noise Letters · 2014
Median type filters coupled with the Laplacian distribution assumption have shown a high efficiency in suppressing impulse noise. We however demonstrate in this paper that the Gaussian distribution assumption is more preferable than Laplacian distribution assumption in suppressing impulse noise, especially for high noise densities. This conclusion is supported by numerical experiments with different noise densities and filter models.