[ITK] some questions about "itkMutualInformatinImageMetric" code

[方龙伟]

hello, everyone

      i am working on 2d/3d registration, and i revise the 'intensitybased2d3dregistration' code which provided by the ITK. i change the metric methods 'itkGradientDifferenceImageToMetric.h' with 'itkMutualInformatinImageMetric'. However, there comes a bug, the program always set 'm_DerivativeCalculator->IsInsideBuffer(mappedPoint)' to false, all points derivatives are set to zero. why comes this bug, does anyone know how to resolve this and help me? thanks in advance.

longwei





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