DicomImageCompressionType Enumeration

Summary

Represents the values that indicates the type of compression.

Syntax

Objective-C

C++/CLI

Java

public enum DicomImageCompressionType

typedef NS_ENUM(NSInteger, LTDicomImageCompressionType) { 
	LTDicomImageCompressionTypeNone,  
	LTDicomImageCompressionTypeRle,  
	LTDicomImageCompressionTypeJpegLossless,  
	LTDicomImageCompressionTypeJpegLossy,  
	LTDicomImageCompressionTypeJpegLsLossless,  
	LTDicomImageCompressionTypeJpegLsLossy,  
	LTDicomImageCompressionTypeJ2kLossless,  
	LTDicomImageCompressionTypeJ2kLossy,  
	LTDicomImageCompressionTypeMpeg2,  
	LTDicomImageCompressionTypeMpeg2Hd,  
	LTDicomImageCompressionTypeH265,  
	LTDicomImageCompressionTypeUnknown,  
	LTDicomImageCompressionTypeJpxLossless,  
	LTDicomImageCompressionTypeJpxLossy,  
};

public enum DicomImageCompressionType

public enum class DicomImageCompressionType

Members

Value	Member	Description
0	None	No compression.
1	Rle	RLE compression.
2	JpegLossless	JPEG lossLess compression.
3	JpegLossy	JPEG lossy compression.
4	JpegLsLossless	JPEG-LS lossLess.
5	JpegLsLossy	JPEG-LS lossy.
6	J2kLossless	JPEG 2000 lossless compression.
7	J2kLossy	JPEG 2000 lossy compression.
8	Mpeg2	MPEG2 video compression. Internally used to read/write DICOM files with the LEADTOOLS Medical Module. For more information on these filters, refer to LEAD DICOM Reader and LEAD DICOM Writer.
9	Mpeg2Hd	MPEG2 HD video compression. Internally used to read/write DICOM files with the LEADTOOLS Medical Module. For more information on these filters, refer to LEAD DICOM Reader and LEAD DICOM Writer.
10	H265	H265
11	Unknown	Unknown compression.
12	JpxLossless	JPEG 2000 Part 2 lossless compression.
13	JpxLossy	JPEG 2000 Part 2 lossy compression.

Example

using Leadtools; 
using Leadtools.Dicom; 
 
 
public void TestDicomImage() 
{ 
   string dicomFileName = Path.Combine(LEAD_VARS.ImagesDir, "DICOM", "image3.dcm"); 
   //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 
      ds.Load(dicomFileName, DicomDataSetLoadFlags.None); 
 
      DicomElement pixelDataElement = ds.FindFirstElement(null, DicomTag.PixelData, true); 
      if (pixelDataElement == null) 
      { 
         Console.WriteLine("This dataset is missing the pixel data element", "Sample"); 
         return; 
      } 
 
      if (ds.GetImageCount(pixelDataElement) == 0) 
      { 
         Console.WriteLine("Sample: This dataset has no images"); 
         return; 
      } 
 
      DicomImageInformation imageInformation = ds.GetImageInformation(pixelDataElement, 0); 
      if (imageInformation == null) 
      { 
         Console.WriteLine("Sample: 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, 
         RasterByteOrder.Gray, 
         DicomGetImageFlags.AllowRangeExpansion | DicomGetImageFlags.AutoApplyModalityLut | DicomGetImageFlags.AutoApplyVoiLut); 
 
      if (image == null) 
      { 
         Console.WriteLine("Sample: 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, DicomTag.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, DicomTag.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 
 
            ds1.Save(Path.Combine(LEAD_VARS.ImagesDir, "DICOM", "Test.dcm"), DicomDataSetSaveFlags.None); 
 
         } 
      } 
      //Load DICOM File 
      ds.Load(dicomFileName, DicomDataSetLoadFlags.None); 
   } 
   DicomEngine.Shutdown(); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
}

Requirements

Target Platforms

Reference

Leadtools.Dicom Namespace

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Help Version 23.0.2024.8.20

Leadtools.Dicom Assembly

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Leadtools.Dicom Namespace

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