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Add segment for background if required. - #534
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michaelonken wants to merge 3 commits into
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michaelonken wants to merge 3 commits into
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When converting DICOM binary segmentations to DICOM labelmaps, some pixels are likely not covered from any of the the segments. Since the pixels are initially set to 0, all non-covered pixels will be "background" and must be marked as such. This is done by scanning all pixels after conversion and if a 0 is found, a segment using codes for denoting "background" will be inserted automatically. The alternative would be to set Pixel Padding Value. This could be introduced as an option later, but for now the background segment seems to be better supported by consuming applications.
Also for the newly added background segment, don't write (0062,000D) Recommended Display CIELab Value either. Also some minor changes.
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This was referenced May 8, 2026
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Superseded by #535 |
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When converting DICOM binary segmentations to DICOM labelmaps, some pixels are likely not covered from any of the the segments. Since the pixels are initially set to 0, all non-covered pixels will be "background" and must be marked as such.
This is done by scanning all pixels after conversion and if a 0 is found, a segment using codes for denoting "background" will be inserted automatically.
The alternative would be to set Pixel Padding Value. This could be introduced as an option later, but for now the background segment seems to be better supported by consuming applications.