[Insight-users] Mean Curvature Calculation in Level Set

[Sah Rayman]

I am looking at function:

template <class TImageType>
typename LevelSetFunction<TImageType>::ScalarValueType
LevelSetFunction<TImageType>::ComputeMeanCurvature()

in itkLevelSetFunction.txx, line 158 (ITK 1.4)

When I compared that to Sethian's "Level Set Methods
and Fast Marching Methods", 2ndEd, pp. 70, Eq. 6.36, I
found that the C++ implementation contain some extra
terms in nominator:

-dx[0]*dx[0]*dxy[0][0]-dx[1]*dx[1]*dxy[1][1]-...

Can someone tell me what are these additional terms
for? Is the result still mean curvature? Any reference
for that?


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