Demosaicing using optimal recovery

D. Darian Muresan, Thomas W. Parks

    Research output: Contribution to journalArticlepeer-review

    69 Scopus citations

    Abstract

    Color images in single-chip digital cameras are obtained by interpolating mosaiced color samples. These samples are encoded in a single-chip charge-coupled device by sampling the light after it passes through a color filter array (CFA) that contains different color filters (i.e., red, green, and blue) placed in some pattern. The resulting sparsely sampled images of the three-color planes are interpolated to obtain the complete color image. Interpolation usually introduces color artifacts due to the phase-shifted, aliased signals introduced by the sparse sampling of the CFAs. This paper introduces a nonlinear interpolation scheme based on edge information that produces high-quality visual results. The new method is especially good at reconstructing the image around edges, a place where the visual human system is most sensitive.

    Original languageEnglish
    Pages (from-to)267-278
    Number of pages12
    JournalIEEE Transactions on Image Processing
    Volume14
    Issue number2
    DOIs
    StatePublished - Feb 2005

    Keywords

    • Demosaicing
    • Denoising
    • Image modeling
    • Interpolation
    • Quadratic classes

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