The Danielsson distance filter use pixel type of Offset<>, which does not have a specialized NumericTraits.

[blowekamp]

Encountered an issue with the Image::GetNumberOfComponentsPerPixel method not reporting the correct number of components with the results from DanielssonDistanceMapImageFilter::VectorDistanceMap. The resulting image has pixel type Offset which is missing a specialized NumericTraits to get the correct Length.

While the usage of Offset for a pixel type appears to be rather unusual, the proposed fix is to add the additional specialization of NumericTraits.

[blowekamp]

The Offset pixel type will be notably incomplete compared to other used pixel type, because the Offset is not templated over the component value type, therefore there cannot be a real, Abs etc pixel type.

[stale]

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