Page 249 - Digital Analysis of Remotely Sensed Imagery

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Frequency (absolute)
16 0 16 14 12 10 8 6 4 2 0 DN (b) 100 80 60 40 20 Equalized cumulative probability 0 16 14 12 10 8 6 4 2 0 16 DN (d) An example of histogram equalization of an image recorded at 4 bits. (a) Histogram of the raw image; (b) equalized histogram of the
14 14
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DN (a) DN (c)
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6 6
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0 0 0
10 8 6 4 Frequency (absolute) 2 0 100 80 60 40 20 Cumulative frequency (%)

FIGURE 6.8

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