Highdicom support multiple segmentation when creating dicom seg

[anuragp2018]

When i try to create dicom seg file it increase slices. For example I have (114 512 512) dimension but after creating dicom seg file it increases to (731 512 512). I am using dicom and segmentation nrrd for dicom seg creation.

[CPBridge]

Hi @anuragp2018 yes this is expected behaviour if your segmentation contains multiple segments (classes). This is because DICOM segmentations (those with SegmentationType BINARY) stores a separate set of frames for each segment (allowing them to overlap).

You should find that if you use highdicom's methods to read the files, it can correctly recombine them if that is what you desire (see e.g. the get_volume method).

Alternatively, you could look into using the new LABELMAP segmentation type, which combines the segments into a single set of frames, as you were probably expecting. However, note that LABELMAP segmentations are not widely compatible with other tools (yet...)

I think you would find it helpful to read our documentation page on segmentations, which explains some of these concepts in detail: https://highdicom.readthedocs.io/en/latest/seg.html