PngSuite - Image filtering / PNG-files



    f00n0g08 - grayscale, no interlacing, filter-type 0
    f00n2c08 - color, no interlacing, filter-type 0
    f01n0g08 - grayscale, no interlacing, filter-type 1
    f01n2c08 - color, no interlacing, filter-type 1
    f02n0g08 - grayscale, no interlacing, filter-type 2
    f02n2c08 - color, no interlacing, filter-type 2
    f03n0g08 - grayscale, no interlacing, filter-type 3
    f03n2c08 - color, no interlacing, filter-type 3
    f04n0g08 - grayscale, no interlacing, filter-type 4
    f04n2c08 - color, no interlacing, filter-type 4
    f99n0g04 - bit-depth 4, filter changing per scanline


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Willem van Schaik, Calgary, April 2011 http://www.schaik.com/wwwillem.html