Fig. 21 Smoothing by selective averaging, (a) Result of averaging each point with its five
consecutive neighbors whose average is closest to the value of the point (five iterations), (b)
Analogous, but using the five neighbors whose average differs the most from that of the remaining
three neighbors, (c) Result of averaging each point with its five neighbors whose values are closest
to its own (seven iterations), (d) Result of averaging the neighbors whose rates of change of gray
level are lower than that of the point (four iterations).
6.4 Smoothin ...
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