A Nonlinear Hybrid Filter for Salt & Pepper Noise Removal from Color Images

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Isma Irum
Muhammad Sharif
Mudassar Raza
Sajjad Mohsin

Abstract

Impulse noise reduction or removal is a very active research area of image processing. A nonlinear hybrid filter for removing fixed impulse noise (salt & pepper) noise from color images has been proposed in this study. Technique is based on mathematical morphology and trimmed standard median filter. Proposed filter is composed of a sequence of morphological standard and well known operations erosion-dilation and trimmed standard median filter. It removes the fixed impulse noise (salt & pepper) very well without distorting the image features, color components and edges. It does not introduce blurring and moving effects even in high noise densities (up to 90%). The standard similarity measure peak signal to noise ratio (PSNR) and computation time have been used to evaluate the performance of proposed hybrid filter.

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How to Cite
Irum, I., Sharif, M., Raza, M., & Mohsin, S. (2015). A Nonlinear Hybrid Filter for Salt & Pepper Noise Removal from Color Images. Journal of Applied Research and Technology, 13(1). https://doi.org/10.1016/S1665-6423(15)30015-8
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