An Improved PSM Filter for Removing Impulse Noise
Hiroyuki Wasaki, Jianming Lu, Takashi Yahagi · IEEJ Transactions on Electronics Information and Systems · 2009
In this paper, a new impulse-noise removing filter, which is composed of a improved PSM noise detector and a spline filter, is proposed. Using this filter, undetection of the noises can be avoided by controling the judgement value which is around maximum or minimum pixel value. In addition, it can also be possible to reduce mis-detection of the noises because the noise detecting threshold value can be set to a larger value. As a result of reducing both of undetection and mis-detection, proposed filtering method provides a good performance to remove impulsive noises. And the validity of the proposed method has been confirmed by computer simulations.