We propose a coding algorithm for lossy compression of digital halftones produced by clustered-dot dithering. Our scheme is based on pixel ordering and run-length coding, and has small memory and computation requirements. Data reduction techniques give an efficient, but imperfect, representation of the run lengths, allowing low-rate coding along with a good approximation to the original dot structure. Experiments with 1024/spl times/1024 images, 8/spl times/8 dithering cells, and 600 dpi printing have shown that the algorithm maintains good image quality while achieving rates of about 0.1 bits per pixel.<>


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    Titel :

    Lossy compression of clustered-dot halftones


    Beteiligte:
    Vander Kam, R.A. (Autor:in) / Gray, R.M. (Autor:in)


    Erscheinungsdatum :

    01.01.1994


    Format / Umfang :

    430793 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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