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SimpleITK LabelShapeStatisticsFilter GetOrientedBoundingBox Coordinates Appear Incorrect #1128

kevinalexbrown opened this issue Jul 31, 2019 · 1 comment


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commented Jul 31, 2019

@blowekamp asked me to submit this issue.

Vertices produced by sitk.LabelShapeStatisticsFilter()'s GetOrientedBoundingBoxVertices() are properly in real-world coordinates of the label image only after applying a rotation.

Here is a minimal example that reproduces and solves the issue:


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commented Jul 31, 2019

Thanks for reporting the issue. I looked at the ITK code:

The code clearly does not take into consideration the directions matrix for orientation when generating the vertices list.

I am not sure of the current method should be corrected so that the vertices are in physical space, or if a new method should be created with the corrected coordinates. It's not clear to me if or if not the current implementation would be useful and be producing the correct results.

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