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image processing - Which is better between Histogram Equalization and Histrogram streching?

问题描述:

Which is better between Histogram Equalization and Histogram

stretching for increasing contrast specially when histograms are equal for a particular range

(say 69-192) out of [0,255] and what if this block gets expand towards

0 and 255.

From my opinion Histogram Equalization is not good idea when all histograms are equal whatever be the size of range. Just histogram stretching should work.

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