Insight Toolkit (ITK) -- Official Repository. ITK builds on a proven, spatially-oriented architecture for processing, segmentation, and registration of scientific images in two, three, or more dimensions.
SpatialObject stores the image regions of the spatial object. It appears reasonable for its derived class ImageSpatialObject to keep them up-to-date, in accordance with its image.
A significant performance improvement of ImageMaskSpatialObject is then achieved by using the buffered region and the requested region as cached in its base class, instead of calling the virtual functions GetBufferedRegion() and GetRequestedRegion() from its image.
It's interesting to see that the common base class itk::SpatialObject already has those data members to cache the image regions (m_LargestPossibleRegion, m_RequestedRegion, m_BufferedRegion), but it looks like they weren't used anywhere, as far as I can see:
For the record, those data members were added to itk::SpatialObject with commit 433987062ccaee80c9a7d2f6c1ff857fe96cf929 "ENH: Removed NDimensionalSpatialObject", Julien Jomier (@jjomier), 10 February 2003.
SpatialObjectstores the image regions of the spatial object. It appears reasonable for its derived classImageSpatialObjectto keep them up-to-date, in accordance with its image.A significant performance improvement of
ImageMaskSpatialObjectis then achieved by using the buffered region and the requested region as cached in its base class, instead of calling the virtual functionsGetBufferedRegion()andGetRequestedRegion()from its image.It's interesting to see that the common base class
itk::SpatialObjectalready has those data members to cache the image regions (m_LargestPossibleRegion,m_RequestedRegion,m_BufferedRegion), but it looks like they weren't used anywhere, as far as I can see:https://github.com/InsightSoftwareConsortium/ITK/blob/436423d798e63e72444dd4a9d8787ffd34c5eb60/Modules/Core/SpatialObjects/include/itkSpatialObject.h#L731-L733
For the record, those data members were added to
itk::SpatialObjectwith commit 433987062ccaee80c9a7d2f6c1ff857fe96cf929 "ENH: Removed NDimensionalSpatialObject", Julien Jomier (@jjomier), 10 February 2003.