Least-Squares Luma–Chroma Demultiplexing Algorithm for Bayer Demosaicking

Authors:
B. Leung; Gwanggil Jeon;E. Dubois
Affiliations:
Inst. of Biomater. & Biomed. Eng., Univ. of Toronto, Toronto, ON, Canada;-;-
Venue:
IEEE Transactions on Image Processing
Year:
2011

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Color demosaicking with an image formation model and adaptive PCA

Journal of Visual Communication and Image Representation

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Abstract

This paper addresses the problem of interpolating missing color components at the output of a Bayer color filter array (CFA), a process known as demosaicking. A luma-chroma demultiplexing algorithm is presented in detail, using a least-squares design methodology for the required bandpass filters. A systematic study of objective demosaicking performance and system complexity is carried out, and several system configurations are recommended. The method is compared with other benchmark algorithms in terms of CPSNR and S-CIELAB ΔE* objective quality measures and demosaicking speed. It was found to provide excellent performance and the best quality-speed tradeoff among the methods studied.