October 2015
Beginner
551 pages
17h 46m
English
Content preview from A Computational Introduction to Digital Image Processing, 2nd Edition
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58 A Computational Introduction to Digital Image Processing, Second Edition
(a) The image quantized to 8 grayscales (b) The image quantized to 4 grayscales
FIGURE 3.11: Quantization (3)
FIGURE 3.12: The image quantized to 2 grayscales
Image Display 59
Dark gray Midgray Light gray
FIGURE 3.13: Patterns for dithering output
Dithering
Dithering, in general terms, refers to the process of reducing the number of colors in an
image. For the moment, we shall be concerned only with grayscale dithering. Dithering is
necessary sometimes for display, if the image ...
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