<div>Hi,</div>
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<div>I am trying to modify "itkMattesMutualInformationMetricv4" but am having trouble following the logic behind the derivative computations when a "local support" transformation is used.</div>
<div>Please could someone explain the basic ideas used? </div>
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<div>Also, do local support transforms imply dense transformations with local support basis functions, e.g. BSpline deformations?</div>
<div>Please help!</div>
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<div>Thanks much,</div>
<div>R</div>
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