[Insight-users] Viola and Wells's Mutual Information implementation

[YuPing Lin]

Hello,

  I have a question regarding the implementation of Viola and Wells's Mutual
Information in itkMutualInformationImageToImageMetric.txx.

In the GetValue(), right before the function returns "measure", why should
we add log(nsamp) to the measure (line 272,   measure += vcl_log(nsamp ); )?

I don't see any related description about it in the paper. Could anyone tell
me why? Thank you very much.

Yuping
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