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Weighted Edge Adaptive POCS Demosaicking Algorithm  

Park, Jong-Soo (Dept. of Computer Eng., kwangwoon Univ.)
Lee, Seong-Won (Dept. of Computer Eng., kwangwoon Univ.)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SP / v.45, no.3, 2008 , pp. 46-54 More about this Journal
Abstract
Most commercial CCD/CMOS image sensors have CFA(Color Filter Array) where each pixel gathers light of a selective color to reduce the sensor size and cost. There are many algorithms proposed to reconstruct the original clolr image by adopting pettern recognition of regularization methods to name a few. However the resulting image still suffer from errors such as flase color, zipper effect. In this paper we propose an adaptive edge weight demosaicking algorithm that is based on POCS(Projection Onto Convex Sets) not only to improve the entire image's PSNR but also to reduce the edge region's errors that affect subjective image quality. As a result, the proposed algorithm reconstruct better quality images especially at the edge region.
Keywords
demosaicking; interpolation; pocs; edge; wavelet;
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