Removal of High Density Salt and Pepper Noise Through Modified Decision Based Unsymmetric Trimmed Median Filter

被引：355

作者：

Esakkirajan, S. ^{[1
]}

Veerakumar, T. ^{[2
]}

Subramanyam, Adabala N. ^{[1
]}

PremChand, C. H. ^{[1
]}

机构：

[1] PSG Coll Technol, Dept Instrumentat & Control Syst Engn, Coimbatore, Tamil Nadu, India

[2] PSG Coll Technol, Dept Elect & Commun Engn, Coimbatore, Tamil Nadu, India

来源：

IEEE SIGNAL PROCESSING LETTERS | 2011年 / 18卷 / 05期

关键词：

Median filter; salt and pepper noise; unsymmetrical trimmed median filter;

D O I：

10.1109/LSP.2011.2122333

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

080906 [电磁信息功能材料与结构]; 082806 [农业信息与电气工程];

摘要：

A modified decision based unsymmetrical trimmed median filter algorithm for the restoration of gray scale, and color images that are highly corrupted by salt and pepper noise is proposed in this paper. The proposed algorithm replaces the noisy pixel by trimmed median value when other pixel values, 0's and 255's are present in the selected window and when all the pixel values are 0's and 255's then the noise pixel is replaced by mean value of all the elements present in the selected window. This proposed algorithm shows better results than the Standard Median Filter (MF), Decision Based Algorithm (DBA), Modified Decision Based Algorithm (MDBA), and Progressive Switched Median Filter (PSMF). The proposed algorithm is tested against different grayscale and color images and it gives better Peak Signal-to-Noise Ratio (PSNR) and Image Enhancement Factor

引用

页码：287 / 290

页数：4

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