| ARTICLE |
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| Year : 2010 | Volume
: 56
| Issue : 4 | Page : 219-226 |
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Efficient Median Filter for Restoration of Image and Video Sequences Corrupted by Impulsive Noise
T Ravi Kishore1, K Deergha Rao2
1 Defence Electronics Research Laboratory, Hyderabad, India
2 R and T Unit for Navigational Electronics, Osmania University, Hyderabad, India
Correspondence Address:
T Ravi Kishore
Defence Electronics Research Laboratory, Hyderabad
India
 DOI: 10.4103/0377-2063.70645
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Various switching-based median filters have been proposed in the literature for restoration of extremely corrupted images and video sequences by impulsive noise. Among these, switching median filters with boundary discriminative noise detection (BDND) are very effective and outperform all the previously proposed median-based filters. However, the calculation is very time-consuming. Hence, in this paper, a median filter with an efficient BDND (EBDND) is proposed for denoizing image and video sequences corrupted by impulsive noise. The proposed EBDND uses a faster sorting algorithm both in noise detection and adaptive filtering stages for the restoration of image and video sequences contaminated by impulse noise. For motion estimation of the video sequence, block-matching technique is used. The performance of the proposed EBDND is demonstrated through computer simulations in comparison with the BDND method. |
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