Neural Network with Median Filter for Image Noise Reduction

According to recent advances in Digital devices, the problem of image noise reduction becomes more significant than ago. Median filter (MF), as an efficient solution for this problem, has been widely applied in practice. In this paper, to improve the quality of filtered image, using a Neural Network (NN) is proposed. A NN, which is trained in a real time manner, can be estimated the noise density of moving window/mask in MF and changes its size adaptively. By using the NN as a supervisor for MF, better performance can be achieved. Simulation results are obtained to show the ability of the proposed combination in image noise reduction. © 2012 The Authors. Published by Elsevier B.V. Selection and peer review under responsibility of Information Engineering Research Institute Keywrds: Image processing, noise reduction, Median filter, neural network.