alexa SURVEY ON DENOISING METHOD OF COLOR FILTER ARRAY (CFA) IMAGES FOR SINGLE-SENSOR DIGITAL CAMERAS
ISSN: 1948-1432

Journal of Global Research in Computer Sciences
Open Access

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Review Article

SURVEY ON DENOISING METHOD OF COLOR FILTER ARRAY (CFA) IMAGES FOR SINGLE-SENSOR DIGITAL CAMERAS

Sunil Ahirwar1*, Prof. Vineet Richariya2
  1. M Tech (CSE), LNCT Bhopal
  2. Head of Department (CSE), LNCT Bhopal
Corresponding Author: Sunil Ahirwar, E-mail: [email protected]
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Abstract

Single sensor digital color still/video cameras capture images using a color filter array (CFA) and require color interpolation (demosaicking) to reconstruct full color images in demosaicking, sensor noises can cause color artifacts that are hard to remove later by a separate denoising process, because the demosaicking process complicates the noise characteristics by blending noises of different color channels. The quality of demosaicked images is degraded due to the sensor noise introduced during the image acquisition process. The conventional solution to combating CFA sensor noise is demosaicking first, followed by a separate denoising processing. This strategy will generate many noise-caused color artifacts in the demosaicking process, which are hard to remove in the denoising process. Few denoising schemes that work directly on the CFA images have been presented because of the difficulties arisen from the red, green and blue interlaced mosaic pattern, yet a well designed “denoising first and demosaicking later” scheme can have advantages such as less noise-caused color artifacts and cost-effective implementation. The Paper shows different types of denoising process of CFA images.

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