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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/60914


    Title: Heterogeneity-Projection Hard-Decision Color Interpolation Using Spectral-Spatial Correlation
    Authors: Tsai, Chi-yi;Song, Kai-tai
    Contributors: 淡江大學電機工程學系
    Keywords: image representation;Adaptive filtering;color artifacts;color filter array (CFA) demosaicing;color reproduction;digital cameras
    Date: 2007-01-01
    Issue Date: 2011-10-15 01:05:01 (UTC+8)
    Publisher: IEEE
    Abstract: This paper presents a novel heterogeneity-projection hard-decision (HPHD) color interpolation procedure for reproduction of Bayer mosaic images. The proposed algorithm aims to estimate the optimal interpolation direction and perform hard-decision interpolation, in which each pixel only needs to be interpolated once. A new heterogeneity-projection scheme based on a novel spectral-spatial correlation concept is proposed to estimate the best interpolation direction directly from the original mosaic image. Using the proposed heterogeneity-projection scheme, a hard-decision rule can be decided before performing the interpolation. The advantage of this scheme is that it provides an efficient way for decision-based algorithms to generate improved results using fewer computations. Compared with three recently reported demosaicing techniques, Gunturk's, Lu's, and Li's methods, the proposed HPHD outperforms all of them in both PSNR values and S-CIELAB DeltaEab * measures by utilizing 25 natural images from Kodak PhotoCD
    Relation: IEEE Transactions on Image Processing 16(1), pp.78-91
    DOI: 10.1109/TIP.2006.884943
    Appears in Collections:[電機工程學系暨研究所] 期刊論文

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