National Conference on Advancement in Electronics & Telecommunication Engineering |
Foundation of Computer Science USA |
NCAETE - Number 2 |
May 2012 |
Authors: Kiran P. Dange, R K Kulkarni |
191832d6-6ce0-434a-a360-9382cbb8afdc |
Kiran P. Dange, R K Kulkarni . Detail Preserving Median Filter for High Density Impulse Noise. National Conference on Advancement in Electronics & Telecommunication Engineering. NCAETE, 2 (May 2012), 13-16.
For removing impulse noise, basic median filter is used. The median filters are not able to retain edges and fine details of images at high density noise. A new algorithm is proposed to overcome the limitations of existing methods. This algorithm is categorized into two stages. First stage is detection of impulse pixel depends on threshold values and second stage is filtering of corrupted pixels which are replaced by the median of uncorrupted pixels in the filtering window. This proposed algorithm works good up to 90% noise density. Extensive simulations show that the proposed filter restores fairly well even the images that are highly corrupted. The performance measures like PSNR, MSE, and UQI are better than other methods.