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Improved bilateral filter for suppressing mixed noise in color images

Published: 01 December 2012 Publication History

Abstract

It is a challenging problem to suppress mixed noise in color images. The traditional bilateral filter can excellently reduce additive noise without destroying image edges and details, but it fails to remove impulsive noise. This paper presents an improved bilateral filtering method, which can simultaneously suppress both impulsive and additive noise. The proposed solution first introduces a new weighting function to the bilateral filtering mechanism, which is experimentally more effective than the traditional Gaussian kernel. Then, either the current pixel or the vector median, instead of always the current pixel itself, is chosen as the base to take part in the bilateral filtering action, which is determined by whether the current pixel is a possible impulse or not. The experimental results show that the proposed solution can simultaneously remove impulsive and additive noise while preserving edge structures, and outperforms other vector filtering methods in terms of both objective evaluation and subjectively visual quality.

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      Information & Contributors

      Information

      Published In

      cover image Digital Signal Processing
      Digital Signal Processing  Volume 22, Issue 6
      December, 2012
      320 pages

      Publisher

      Academic Press, Inc.

      United States

      Publication History

      Published: 01 December 2012

      Author Tags

      1. Additive noise
      2. Bilateral filter
      3. Color image filtering
      4. Impulsive noise
      5. Mixed noise

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      • (2018)Color image sharpening based on local color statisticsMultidimensional Systems and Signal Processing10.1007/s11045-017-0532-629:4(1819-1837)Online publication date: 1-Oct-2018
      • (2018)Combined ripplet and total variation image denoising methods using twin support vector machinesMultimedia Tools and Applications10.1007/s11042-017-4618-977:6(7013-7031)Online publication date: 1-Mar-2018
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      • (2015)A noise-ranking switching filter for images with general fixed-value impulse noisesSignal Processing10.1016/j.sigpro.2014.07.015106:C(198-208)Online publication date: 1-Jan-2015

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