Edge Detection with Detail Preservation for RVIN Using Adaptive Threshold Filtering Method

摘要

Images are often corrupted by impulse noise in the procedures of image acquisition and transmission. In this paper we proposes a method for effective detection of noisy pixel based on median value and an efficient algorithm for the estimation and replacement of noisy pixel, the replacement of noisy pixel is carried out twicewhich provides better preservation of image details. The presence of high performing detection stage for the detection noisy pixel makes the proposed method suitable in the case of noiselevels as high as 60% to 90% random valued impulse noise; the proposed method yields better image quality.