Lossless compression of RGB color images

Nasir D. Memon, Khalid Sayood

    Research output: Contribution to journalArticle

    Abstract

    Although much work has been done toward developing lossless algorithms for compressing image data, most techniques reported have been for two-tone or gray-scale images. It is generally accepted that a color image can be easily encoded by using a gray-scale compression technique on each of the three (say, RGB) color planes. Such an approach, however, fails to take into account the substantial correlations that are present between color planes. Although several lossy compression schemes that exploit such correlations have been reported in the literature, we are not aware of any such techniques for lossless compression. Because of the difference in goals, the best ways of exploiting redundancies for lossy and lossless compression can be, and usually are, very different. We propose and investigate a few lossless compression schemes for RGB color images. Both prediction schemes and error modeling schemes are presented that exploit interframe correlations. Implementation results on a test set of images yield significant improvements.

    Original languageEnglish (US)
    Pages (from-to)1711-1717
    Number of pages7
    JournalOptical Engineering
    Volume34
    Issue number6
    StatePublished - Jun 1995

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    Color
    color
    gray scale
    Redundancy
    redundancy
    compressing
    predictions

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics

    Cite this

    Memon, N. D., & Sayood, K. (1995). Lossless compression of RGB color images. Optical Engineering, 34(6), 1711-1717.

    Lossless compression of RGB color images. / Memon, Nasir D.; Sayood, Khalid.

    In: Optical Engineering, Vol. 34, No. 6, 06.1995, p. 1711-1717.

    Research output: Contribution to journalArticle

    Memon, ND & Sayood, K 1995, 'Lossless compression of RGB color images', Optical Engineering, vol. 34, no. 6, pp. 1711-1717.
    Memon ND, Sayood K. Lossless compression of RGB color images. Optical Engineering. 1995 Jun;34(6):1711-1717.
    Memon, Nasir D. ; Sayood, Khalid. / Lossless compression of RGB color images. In: Optical Engineering. 1995 ; Vol. 34, No. 6. pp. 1711-1717.
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