Floyd-Steinberg Dithering
   
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    GraphicsAcademy.com  >  Glossary  >  Floyd-Steinberg Dithering

       

     

    Floyd-Steinberg Dithering

    Floyd-Steinberg Dithering is a method of dithering which tends to produce effective results with relatively few repeated pattern artifacts.

    Floyd-Steinberg Dithering can be can be used for both black and white images, and for color images.

    The main disadvantage of Floyd-Steinberg is that it is relatively processor intensive, and therefore can be slow for the compuer to perform on large areas.

    The picture below shows a True Color image, and the results of converting it to monochrome using Floyd-Steinberg Dithering:

    Original Image:
    Original image
    Floyd-Steinberg Dithered:
    Image converted to monochrome using Floyd-Steinberg Dithering

    To give you an idea of what the detail of image looks like after Floyd-Steinberg Dithering, here is the monochrome image greatly enlarged so that you can see the individual pixels:

    Enlarged version of color image converted to monochrome using Floyd-Steinberg Dithering

    Floyd-Steinberg Dithering can also be used when reducing the color depth of an image. For example, when converting True Color image into a color-safe palette image, Floyd-Steinberg Dithering can be used to avoid large smooth areas of color which would otherwise spoil the photographic effect of an image.

    The picture below shows a True Color image, and the results of converting it to the color-safe palette, with and without using Floyd-Steinberg Dithering:

     
    Original Image:
    Original image
    Color-Safe
    (No dithering):
    Color-safe image
    Color-Safe
    (Floyd-Steinberg Dithering):
    Color-safe image created using Floyd-Steinberg Dithering

    To give you an idea of what the detail of image looks like after Floyd-Steinberg Dithering, here is the color-safe image greatly enlarged so that you can see the individual pixels:

    Color-safe image created using Floyd-Steinberg Dithering


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