ChangeTranferSyntax is not working when change to JPEG2000Lossy from Implicit VR-LIttleEndian

[nag7377]

Hi,

I tried with the following code to change the DicomTranferSyntax Implicit VR-Little Endian to JPEG200LOSSY but its not creating the JPEG2000Lossy Dicomfile.  But the same code is working fine when creating all ending with Endian formats from Implicit VR-Little Endian.

DicomFile df = DicomFile.Open(dicomfile_name);

df = df.ChangeTransferSyntax(DicomTransferSyntax.JPEG2000Lossy);

df.Save("d:\\changed.dcm");

how can I change to JPEG2000Lossy TransferSyntex Dicom file

Regards

A. Nageswara Rao

[Anders Gustafsson Cureos AB]

Which fo-dicom version are you running?

Do you receive any error message? 

Is the file "changed.dcm" created, and if it is, which transfer syntax is it using?

Are the codec assemblies (DICOM.Native.dll and/or Dicom.Native64.dll) available in the same directory as DICOM.dll?

Regards,

Anders @ Cureos

[Chris Horn]

whats the imput file bit depth?

some older images are 10 bit and can produce different results, from memory the native libs assume an imput bit depth of 16, 12 or 8.

This has long been an issue trying to go from 16 bit to 8 bits does not work with all syntax's. however J2K is the one that works well most of the time or Jpeg-LS

[nag7377]

Yes it created all the formats after adding DICOM.Native.dll and/or Dicom.Native64.dll  in the same directory

Thank You