資料來源 : pyDict

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資料來源 : WordNet®

dithering
     n : the process of representing intermediate colors by patterns
         of tiny colored dots that simulate the desired color

資料來源 : Free On-Line Dictionary of Computing

dithering
     
         A technique used in {quantisation} processes
        such as {graphics} and {audio} to reduce or remove the
        correlation between noise and signal.
     
        Dithering is used in {computer graphics} to create additional
        colors and shades from an existing {palette} by interspersing
        {pixels} of different colours.  On a {monochrome} display,
        areas of grey are created by varying the proportion of black
        and white pixels.  In colour displays and printers, colours
        and textures are created by varying the proportions of
        existing colours.  The different colours can either be
        distributed randomly or regularly.  The higher the
        {resolution} of the display, the smoother the dithered colour
        will appear to the eye.
     
        Dithering doesn't reduce resolution.  There are three types:
        regular dithering which uses a very regular predefined
        pattern; random dither where the pattern is a random noise;
        and pseudo random dither which uses a very large, very
        regular, predefined pattern.
     
        Dithering is used to create patterns for use as backgrounds,
        fills and shading, as well as for creating {halftones} for
        printing.  When used for printing is it very sensitive to
        paper properties.  Dithering can be combined with
        {rasterising}.  It is not related to {anti-aliasing}.
     
        (2003-07-20)