Target to Background Contrast Enhancement Measurement Based on Entropy

It is possible to extend the concept of TBCs further by replacing the standard deviation with the entropy of the target in the original and enhanced images, eO and eE, respectively, to quantify the homogeneity ratio. Similar to Eq. (11.6) the target to background contrast enhancement using entropy (TBCe) is defined as

Assuming that the target has a smaller mean before and after enhancement compared to the background, it is expected that as a result of enhancement, this measure should give a value greater than zero.

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