Some more examples

[gdcm.git] / Example / exImageLighten.cxx

diff --git a/Example/exImageLighten.cxx b/Example/exImageLighten.cxx
new file mode 100644 (file)
index 0000000..16ae6e8
--- /dev/null
+++ b/Example/exImageLighten.cxx
@@ -0,0 +1,140 @@
+/*=========================================================================
+                                                                                
+  Program:   gdcm
+  Module:    $RCSfile: exImageLighten.cxx,v $
+  Language:  C++
+  Date:      $Date: 2005/02/09 14:39:49 $
+  Version:   $Revision: 1.1 $
+                                                                                
+  Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de
+  l'Image). All rights reserved. See Doc/License.txt or
+  http://www.creatis.insa-lyon.fr/Public/Gdcm/License.html for details.
+                                                                                
+     This software is distributed WITHOUT ANY WARRANTY; without even
+     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+     PURPOSE.  See the above copyright notices for more information.
+                                                                                
+=========================================================================*/
+
+#include "gdcmFile.h"
+#include "gdcmFileHelper.h"
+#include "gdcmDocument.h"
+#include "gdcmValEntry.h"
+#include "gdcmBinEntry.h"
+#include "gdcmSeqEntry.h"
+
+int main(int argc, char *argv[])
+{  
+   gdcm::File *f1;
+ 
+   std::cout << "-----------------------------------------------" << std::endl;
+   std::cout << "Removes from a full gdcm-readable  Dicom image"  << std::endl;
+   std::cout << " all the 'Shadow groups' and the 'Sequence' entries"
+          << " Warning :  'Compressed images' are uncompressed" 
+          << std::endl
+          << "         :  'YBR images' are converted into 'RGB images'"
+          << std::endl
+          << "         :  'RGB planes' are converted into 'RGB pixels'"
+          << std::endl
+          << "         :  'Palette Color images' are kept 'as is'"
+          << std::endl;
+   std::cout << "-----------------------------------------------" << std::endl;
+
+   if( argc < 3 )
+    {
+       std::cerr << "Usage " << argv[0]  << " Source image.dcm  " 
+                 << " Output image.dcm " << std::endl;
+       return 1;
+    }
+
+   std::string fileName       = argv[1];
+   std::string output         = argv[2];
+
+// ============================================================
+//   Read the input image.
+// ============================================================
+
+   std::cout << argv[1] << std::endl;
+
+   f1 = new gdcm::File( fileName );
+   if (!f1->IsReadable()) {
+       std::cerr << "Sorry, " << fileName <<"  not a gdcm-readable "
+                 << "DICOM / ACR File"
+                 <<std::endl;
+       return 0;
+   }
+   std::cout << " ... is readable " << std::endl;
+
+// ============================================================
+//   Read the Pixels
+//
+// ============================================================
+ 
+   // Pixel Reading must be done here, to be sure 
+   // to load the Palettes Color (if any)
+
+   // First, create a gdcm::FileHelper
+   gdcm::FileHelper *fh1 = new gdcm::FileHelper(f1);
+
+   // Load the pixels, DO NOT transform LUT (if any) into RGB Pixels 
+   uint8_t *imageDataRaw = fh1->GetImageDataRaw();
+   // Get the image data size
+   size_t dataRawSize    = fh1->GetImageDataRawSize();
+
+// ============================================================
+//   Create a new gdcm::Filehelper, to hold new image.
+// ============================================================
+
+   gdcm::FileHelper *copy = new gdcm::FileHelper( output );
+
+// ============================================================
+//   Selective copy of the entries (including Pixel Element).
+// ============================================================
+
+   gdcm::DocEntry *d = f1->GetFirstEntry();
+ 
+   d = f1->GetFirstEntry();
+   while(d)
+   {
+      // We skip SeqEntries, since user cannot do much with them
+      if ( !(dynamic_cast<gdcm::SeqEntry*>(d))
+      // We skip Shadow Groups, since nobody knows what they mean
+           && !( d->GetGroup()%2 ) )
+      { 
+
+         if ( gdcm::BinEntry *b = dynamic_cast<gdcm::BinEntry*>(d) )
+         {              
+            copy->GetFile()->InsertBinEntry( b->GetBinArea(),b->GetLength(),
+                                             b->GetGroup(),b->GetElement(),
+                                             b->GetVR() );
+         }
+         else if ( gdcm::ValEntry *v = dynamic_cast<gdcm::ValEntry*>(d) )
+         {   
+             copy->GetFile()->InsertValEntry( v->GetValue(),
+                                              v->GetGroup(),v->GetElement(),
+                                              v->GetVR() ); 
+         }
+         else
+         {
+          // We skip gdcm::SeqEntries
+         }
+      }
+      d = f1->GetNextEntry();
+   }
+   
+   // User wants to keep the Palette Color -if any- 
+   // and write the image as it was
+   copy->SetImageData(imageDataRaw, dataRawSize);
+   copy->SetWriteModeToRaw();
+   copy->WriteDcmExplVR( output );
+
+   std::cout << std::endl
+             << "------------------------------------------------------------"
+             << std::endl;
+   delete f1;
+   delete fh1;
+   delete copy;
+
+   exit (0);
+}
+