“Correcting for short-range spatial non-linearities of CRT-based output devices” by Klassen and Bharat

  • ©Victor R. Klassen and Krishna Bharat

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Title:

    Correcting for short-range spatial non-linearities of CRT-based output devices

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Abstract:


    Most graphical output devices exhibit what has been termed spatial
    non-linearity: the effect of setting two adjacent pixels to a given
    value is not the same as the sum of the effects of setting those two
    pixels to the same value in isolation: checkerboards of different
    frequencies do not have the same apparent luminance. We present
    a method applicable to bit-mapped devices for compensating for
    short-range spatial non-linearity in error-diffused images. The
    modification to error diffusion is such that it can be used with
    any error diffusion technique. In essence, it consists of finding
    the influence of the neighbouring (output) pixels when making the
    decision of whether to turn on a given pixel, and passing errors
    computed accordingly

References:


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