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`bfconvert` to DICOM writes too much on a DS ValueType field

Open arngaillard opened this issue 2 months ago • 2 comments

Hi,

This is an issue related to this one on libdicom (https://github.com/ImagingDataCommons/libdicom/issues/105).

Basically, converting a file to .dcm with bfconvert produces a file that libdicom is unable to open due to PixelSpacing being too long.

I was advised to also open an issue here, on top of the one already opened, please tell me if this isn't the right place to.

Best regards, Arnaud

arngaillard avatar Oct 21 '25 12:10 arngaillard

Specifically, while converting a Hamamatsu sample from https://openslide.cs.cmu.edu/download/openslide-testdata/Hamamatsu/, bfconvert populates PixelSpacing as follows, which exceeds the limit of 16 characters for the DS DICOM VR.

 (0028,0030) DS [4.564125969876768E-4\4.550625711035267E-4] #  42, 2 PixelSpacing

fedorov avatar Oct 21 '25 14:10 fedorov

Thanks, @arngaillard and @fedorov. #4379 is one way to resolve this, and is something we're evaluating for the next release of Bio-Formats. Any feedback on that change would be welcome.

melissalinkert avatar Oct 28 '25 18:10 melissalinkert