[Insight-developers] GDCM: Update to gdcm 1.2.2

[Mathieu Malaterre]

Hello,

    I have updated gdcm to the latest for the 1.2 branch. It now 
contains code to store DICOM dataset as JPEG Lossless or JPEG 2000 Lossless.
    All I need to do now is plug it into ITK. Right now the API would 
look like (two steps process):

   // Explicitely specify which compression type to use
   //gdcmIO->SetCompressionType(itk::GDCMImageIO::JPEG);
   gdcmIO->SetCompressionType(itk::GDCMImageIO::JPEG2000);

   WriterType::Pointer writer = WriterType::New();
   writer->SetImageIO(dicomIO);
   writer->SetInput(reader->GetOutput());
   writer->SetFileName(output);
   // Request compression of the ImageIO
   writer->UseCompressionOn();
   writer->Update();

Comments welcome,
Mathieu


As a side note:
http://www.dclunie.com/papers/spie_mi_2002_compression.pdf

"DICOM does not, and will never, "approve" compression schemes for any 
particular use. .... Just because its in DICOM doesn't mean it is any 
good and just because it is not doesn't mean it isn't."

----------------------------------------------


http://www.dclunie.com/papers/digitalmammoissues.pdf

"Bottom line: So cheap that avoiding storing for processing or lossy 
compressing is almost absurd."