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A Contrast Enhancement-Based Filter for Removal of Random Valued Impulse Noise

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3 Author(s)
Ghanekar, U. ; Dept. of Electron. & Commun. Eng., Nat. Inst. of Technol., Kurukshetra, India ; Singh, A.K. ; Pandey, R.

This letter presents a new filtering scheme based on contrast enhancement within the filtering window for removing the random valued impulse noise. The application of a nonlinear function for increasing the difference between a noise-free and noisy pixels results in efficient detection of noisy pixels. As the performance of a filtering system, in general, depends on the number of iterations used, an effective stopping criterion based on noisy image characteristics to determine the number of iterations is also proposed. Extensive simulation results exhibit that the proposed method significantly outperforms many other well-known techniques.

Published in:

Signal Processing Letters, IEEE  (Volume:17 ,  Issue: 1 )

Date of Publication:

Jan. 2010

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