Removal of High Density Salt and Pepper Noise through Modified Decision based Un Symmetric Trimmed Median Filter
International Journal of Science and Research (IJSR)

International Journal of Science and Research (IJSR)
www.ijsr.net | Open Access | Fully Refereed | Peer Reviewed International Journal

ISSN: 2319-7064

Research Paper | Electronics & Communication Engineering | India | Volume 2 Issue 3, March 2013

Removal of High Density Salt and Pepper Noise through Modified Decision based Un Symmetric Trimmed Median Filter

K. Santhosh Kumar, M. Gopi

It is important to remove or minimize the degradations, noises in valuable ancient blurred color images. The traditional available filtering methodologies are applicable for fixed window dimensions only these are not applicable for varying scale images. In our project we propose a new technique for digital image restoration, in this the noise free and noisy pixels are classified based on empirical multiple threshold values. Then the median filtering technique is applied. So that noise free pixels are getting preserved and only noisy pixels get restored. In this project, a novel decision-based filter, called the multiple thresholds switching (MTS) filter, is proposed to restore images corrupted by salt-pepper impulse noise. The filter is based on a detection-estimation strategy. The impulse detection algorithm is used before the filtering process, and therefore only the noise-corrupted pixels are replaced with the estimated central noise-free ordered mean value in the current filter window. The new impulse detector, which uses multiple thresholds with multiple neighborhood information of the signal in the filter window, is very precise, while avoiding an undue increase in computational complexity. For impulse noise suppression without smearing fine details and edges in the image, extensive experimental results demonstrate that our scheme performs significantly better than many existing, well-accepted decision-based methods. The performance of our proposed algorithm will be analyzed based PSNR and MSE values.

Keywords: Peak Signal to Noise Ratio, PSNR, Mean square Error, MSE

Edition: Volume 2 Issue 3, March 2013

Pages: 39 - 43

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How to Cite this Article?

K. Santhosh Kumar, M. Gopi, "Removal of High Density Salt and Pepper Noise through Modified Decision based Un Symmetric Trimmed Median Filter", International Journal of Science and Research (IJSR), https://www.ijsr.net/search_index_results_paperid.php?id=IJSRON2013512, Volume 2 Issue 3, March 2013, 39 - 43

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