DeletePaletteColorLut Method

Summary

Deletes all the elements that describe the "Palette Color Lookup Table".

Syntax

C++/CLI

Java

public void DeletePaletteColorLut()

public void deletePaletteColorLut()

public: 
void DeletePaletteColorLut();

Remarks

This method will delete all the elements defined under the "Palette Color Lookup Module", this includes: Red Palette Color Lookup Table Descriptor (0028,1101),

Green Palette Color Lookup Table Descriptor (0028,1102),

Blue Palette Color Lookup Table Descriptor (0028,1103),

Palette Color Lookup Table UID (0028,1199),

Red Palette Color Lookup Table Data (0028,1201),

Green Palette Color Lookup Table Data (0028,1202),

Blue Palette Color Lookup Table Data (0028,1203),

Segmented Red Palette Color Lookup Table Data (0028,1221),

Segmented Green Palette Color Lookup Table Data (0028,1222),

Segmented Blue Palette Color Lookup Table Data (0028,1223)

Example

This example will load a DICOM dataset, update its palette color LUT and then verify that the LUT was updated properly.

using Leadtools; 
using Leadtools.Dicom; 
 
 
public void TestPaletteColorLut() 
{ 
   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()) 
   { 
      int paletteColorLutSize = 65536; 
      //Load DICOM File 
      ds.Load(dicomFileName, DicomDataSetLoadFlags.None); 
      ds.DeletePaletteColorLut(); 
      DicomPaletteColorLutAttributes paletteColorLutAttributes = new DicomPaletteColorLutAttributes(); 
      // Initialize Red Palette Color Lookup Table Descriptor (0028,1101)  
      paletteColorLutAttributes.RedFirstStoredPixelValueMapped = 0; 
      paletteColorLutAttributes.RedEntryBits = 16; 
      paletteColorLutAttributes.RedNumberOfEntries = paletteColorLutSize; 
 
      // Initialize Green Palette Color Lookup Table Descriptor (0028,1102)  
      paletteColorLutAttributes.GreenFirstStoredPixelValueMapped = 0; 
      paletteColorLutAttributes.GreenEntryBits = 16; 
      paletteColorLutAttributes.GreenNumberOfEntries = paletteColorLutSize; 
 
      // Initialize Blue Palette Color Lookup Table Descriptor (0028,1103)  
      paletteColorLutAttributes.BlueFirstStoredPixelValueMapped = 0; 
      paletteColorLutAttributes.BlueEntryBits = 16; 
      paletteColorLutAttributes.BlueNumberOfEntries = paletteColorLutSize; 
 
      ds.SetPaletteColorLutAttributes(paletteColorLutAttributes); 
 
      int[] LutData = new int[paletteColorLutSize]; 
      for (int i = 0; i < paletteColorLutSize; i++) 
      { 
         LutData[i] = i; 
      } 
 
      ds.SetPaletteColorLutData(LutData, DicomPaletteColorLutType.Red); 
      ds.SetPaletteColorLutData(LutData, DicomPaletteColorLutType.Green); 
      ds.SetPaletteColorLutData(LutData, DicomPaletteColorLutType.Blue); 
 
      DicomPaletteColorLutAttributes attributes = ds.GetPaletteColorLutAttributes(); 
      if (attributes != null) 
      { 
         Debug.Assert(attributes.RedNumberOfEntries == paletteColorLutSize); 
         Debug.Assert(attributes.GreenNumberOfEntries == paletteColorLutSize); 
         Debug.Assert(attributes.BlueNumberOfEntries == paletteColorLutSize); 
 
         int[] data = ds.GetPaletteColorLutData(DicomPaletteColorLutType.Red); 
         // Do something with the data 
      } 
      ds.Save(Path.Combine(LEAD_VARS.ImagesDir, "DICOM", "PLUT.dcm"), DicomDataSetSaveFlags.None); 
   } 
   DicomEngine.Shutdown(); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
}