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A new color filter array with optimal properties for noiseless and noisy color image acquisition.

Authors
  • Condat, Laurent
Type
Published Article
Journal
IEEE Transactions on Image Processing
Publisher
Institute of Electrical and Electronics Engineers
Publication Date
Aug 01, 2011
Volume
20
Issue
8
Pages
2200–2210
Identifiers
DOI: 10.1109/TIP.2011.2114355
PMID: 21324782
Source
Medline
License
Unknown

Abstract

Digital color cameras acquire color images by means of a sensor on which a color filter array (CFA) is overlaid. The Bayer CFA dominates the consumer market, but there has recently been a renewed interest for the design of CFAs . However, robustness to noise is often neglected in the design, though it is crucial in practice. In this paper, we present a new 2 × 3-periodic CFA which provides, by construction, the optimal tradeoff between robustness to aliasing, chrominance noise and luminance noise. Moreover, a simple and efficient linear demosaicking algorithm is described, which fully exploits the spectral properties of the CFA. Practical experiments confirm the superiority of our design, both in noiseless and noisy scenarios.

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