PhotometricInterpretation lost

[George]

Hello,

I am using img2dcm --input-format BMP --write-file -nsc --dataset-from documents/study-00000.series-00000.image-00000.dcm sample.bmp ./frame2large/header.dcm

but it did not maintain the photometric conversion. How do I do that? and all the other tags?

$ dcmdump documents/frames/header.dcm | grep 0028,0004
(0028,0004) CS [RGB] # 4, 1 PhotometricInterpretation

Best Regards
George

[Michael Onken]

Hi George,

what do you mean, what is your expectation on how Photometric Intepretation should be handled and what happened instead? What "all other tags"?

BR Michael

[George]

I mean the value of the photometric from --dataset-from documents/study-00000.series-00000.image-00000.dcm was not copied to ./frame2large/header.dcm

[George]

Also, I humbly add that if it is possible to tell me how to modify all the dicom tags without adjusting the one related to jpeg2000 compression because it seems using gdcmconv is not good enough or img to retain the dicom tags

[Marco Eichelberg]

I mean the value of the photometric from --dataset-from documents/study-00000.series-00000.image-00000.dcm was not copied to ./frame2large/header.dcm

That is right. The photometric interpretation is derived from the image file that is converted to DICOM. It would make very little sense to specify that separately.

[George]

Yes, but how can I ensure the quality of the dicom picture that was extracted using the below code can be restored using img2dcm

Code: Select all

     
DicomImage *dicomImage = new DicomImage(dicomConverted.c_str(), CIF_UsePartialAccessToPixelData, frameNumber, 1 );
 if (dicomImage->getStatus() != EIS_Normal)
 {
     delete dicomImage;
}
            
 if (dicomImage->writeBMP(concat.c_str(), 8, 0) != 1)
 {
     delete dicomImage;
     return false;
 }
  
 

[Michael Onken]

I guess this is the same questions as in this thread (answered there), please don't cross-post your questions.
Michael