Comments (1)
scaramallion
commented on September 21, 2024
I don't think it's possible to have a 16-bit input -> precision <=8 -> 16-bit output when using JPEG-LS, and I doubt it's possible for JPEG extended and J2K. That would imply the correct thing to do in this case is to return an 8-bit array when the precision actually is <= 8.
The other side of the coin is if the bits stored is wrong but bits allocated is correct... ugh! With pyjpegls and pylibjpeg we can check the length of the returned image data to determine the appropriate bits stored value, but GDCM will return invalid data of the correct length no matter what. In which case the only other alternative is to parse the JLS stream for the sample precision.
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