InsightSoftwareConsortium / InsightSoftwareConsortium/ITK
StructureTensor speed up.
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Description
The computation of large StructureTensor is slow. For example when used with a large number of Riesz components in the related ImageToImageFilter. See InsightSoftwareConsortium/ITKIsotropicWavelets#62 for the ongoing renaming and refactor.
- [ ] NeighborOperators are slow. Upload profiler result to show it.
- [ ] Check if we can speed it up avoiding boundary checking: https://itk.org/Doxygen/html/structitk_1_1NeighborhoodAlgorithm_1_1ImageBoundaryFacesCalculator.html
- [ ] Explore creating a compile type version, using FixedMatrix instead of VariableSizeMatrix. The number of inputs would be a template parameter.
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