Noise removal for degraded images using trimmed filters and neural filters
Noritaka Yamashita, Jianming Lu, Hiroo Sekiya, and Takashi Yahagi
47th Proceedings of the Japan Joint Automatic Control Conference, Nov., 2004. [pdf document]

<Abstract>

In this paper, we propose a filter for removing mixed impulse and Gaussian noises using Trimmed filters and neural filters. The proposed filter sorts the elements of sample vector and trims the signals around the median from sorted signals. The output of the filter is estimated by the current pixel and the trimmed vector. Carrying out the simulation, we illustrate the peak signal to noise ratio of the proposed filter, and show that it is effective in removing mixed impulse and Gaussian noises.