GetImage(DicomElement,Int32,Int32,DicomGetImageFlags) Method

public RasterImage GetImage( 
   DicomElement element,
   int index,
   int bitsPerPixel,
   DicomGetImageFlags flags
)

[TestMethod]
public async Task TestDicomImage()
{
   //Make sure to initialize the DICOM engine, this needs to be done only once 
   //In the whole application
   DicomEngine.Startup();
   using (DicomDataSet ds = new DicomDataSet())
   {
      //Load DICOM File
      string filePath = @"Assets\IMAGE3.dcm";
      StorageFile file = await Tools.AppInstallFolder.GetFileAsync(filePath);
      ILeadStream stream = LeadStreamFactory.Create(file);
      bool success = await ds.LoadAsync(stream, DicomDataSetLoadFlags.None);
      Debug.Assert(success); 
      ds.DeleteVoiLut();
      DicomElement pixelDataElement = ds.FindFirstElement(null, DicomTagConstants.PixelData, true);
      if (pixelDataElement == null)
      {
         Debug.WriteLine("TestDicomImage: This dataset is missing the pixel data element");
         return;
      }

      if (ds.GetImageCount(pixelDataElement) == 0)
      {
         Debug.WriteLine("TestDicomImage: This dataset has no images");
         return;
      }

      DicomImageInformation imageInformation = ds.GetImageInformation(pixelDataElement, 0);
      if (imageInformation == null)
      {
         Debug.WriteLine("TestDicomImage: Can't retrieve image information");
         return;
      }
      // Over here we can access the different properties of the DicomImageInformation class to get some
      // of the image attributes such as bits allocated (DicomImageInformation. BitsAllocated)
      RasterImage image = ds.GetImage(pixelDataElement,
         0,
         0,
         DicomGetImageFlags.AllowRangeExpansion | DicomGetImageFlags.AutoApplyModalityLut | DicomGetImageFlags.AutoApplyVoiLut);

      if (image == null)
      {
         Debug.WriteLine("Can't retrieve image");
         return;
      }

      //If the image has more than one frame then we can call DicomDataSet.GetImages to get all the frames
      using (DicomDataSet ds1 = new DicomDataSet())
      {
         ds1.Initialize(DicomClassType.DXImageStoragePresentation, DicomDataSetInitializeType.ExplicitVRLittleEndian);
         DicomElement pixelDataElement1 = ds1.FindFirstElement(null, DicomTagConstants.PixelData, true);
         if (pixelDataElement1 != null)
         {
            ds1.SetImage(pixelDataElement1,
               image,
               DicomImageCompressionType.None,
               DicomImagePhotometricInterpretationType.Monochrome2,
               16,
               2,
               DicomSetImageFlags.AutoSetVoiLut);
            //If we have more than one frame then we can call DicomDataSet.SetImages

            //This is an alternative way to set the image, I will first delete the
            //existing image and then call DicomDataSet.InsertImage
            ds1.DeleteElement(pixelDataElement1);
            pixelDataElement1 = ds1.InsertElement(null, false, DicomTagConstants.PixelData, DicomVRType.UN, false, 0);
            ds1.InsertImage(pixelDataElement1,
               image,
               0,
               DicomImageCompressionType.None,
               DicomImagePhotometricInterpretationType.Monochrome2,
               16,
               2,
               DicomSetImageFlags.AutoSetVoiLut);
            //If we have more than one frame then we can call DicomDataSet.InsertImages

            string dicomFileNameOutput = "Test.dcm";
            StorageFile saveFile = await Tools.AppLocalFolder.CreateFileAsync(dicomFileNameOutput);
            ILeadStream streamOutput = LeadStreamFactory.Create(saveFile);
            using (IDisposable disposableOUT = streamOutput as IDisposable)
            {
               await ds.SaveAsync(streamOutput, DicomDataSetSaveFlags.None);
            }

         }
      }
      //Load DICOM File
      filePath = @"Test.dcm";
      file = await Tools.AppLocalFolder.GetFileAsync(filePath);
      stream = LeadStreamFactory.Create(file);
      success = await ds.LoadAsync(stream, DicomDataSetLoadFlags.None);
      Debug.Assert(success); ds.DeleteVoiLut();
   }
   DicomEngine.Shutdown();
}