DecompressImage.py

 
 
"""
Usage:
 
 python DecompressImage.py gdcmData/012345.002.050.dcm decompress.dcm
"""
 
import gdcm
import sys
 
if __name__ == "__main__":
 
  file1 = sys.argv[1]
  file2 = sys.argv[2]
 
  r = gdcm.ImageReader()
  r.SetFileName( file1 )
  if not r.Read():
    sys.exit(1)
 
  # check GetFragment API:
  pd = r.GetFile().GetDataSet().GetDataElement(gdcm.Tag(0x7fe0, 0x0010))
  frags = pd.GetSequenceOfFragments();
  frags.GetFragment(0);
 
  ir = r.GetImage()
  w = gdcm.ImageWriter()
  image = w.GetImage()
 
  image.SetNumberOfDimensions( ir.GetNumberOfDimensions() );
  dims = ir.GetDimensions();
  print ir.GetDimension(0);
  print ir.GetDimension(1);
  print "Dims:",dims
 
  #  Just for fun:
  dircos =  ir.GetDirectionCosines()
  t = gdcm.Orientation.GetType(tuple(dircos))
  l = gdcm.Orientation.GetLabel(t)
  print "Orientation label:",l
 
  image.SetDimension(0, ir.GetDimension(0) );
  image.SetDimension(1, ir.GetDimension(1) );
 
  pixeltype = ir.GetPixelFormat();
  image.SetPixelFormat( pixeltype );
 
  pi = ir.GetPhotometricInterpretation();
  image.SetPhotometricInterpretation( pi );
 
  pixeldata = gdcm.DataElement( gdcm.Tag(0x7fe0,0x0010) )
  str1 = ir.GetBuffer()
  #print ir.GetBufferLength()
  pixeldata.SetByteStringValue( str1 )
  image.SetDataElement( pixeldata )
 
  w.SetFileName( file2 )
  w.SetFile( r.GetFile() )
  w.SetImage( image )
  if not w.Write():
    sys.exit(1)