How to get the desired voxel index for region growing algorithms by using VTK voxel index?

Algorithms
2

Get the world coordinates from VTK, then pass them to itk::Image's method TransformPhysicalPointToIndex(). That method will compute an itk::Index of the voxel in question.

Significant difference between itk::Image and vtkImageData: VTK’s image does not have orientation, whereas ITK’s does.

A bit deeper discussion is in [SOLVED]TransformIndexToPhysicalPoint manually.

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