C#
C++/CLI
public int VoiLutCount { get; }
public:
property int VoiLutCount {
int get();
}
The number of items under the VOI LUT Sequence.
This property gets the number of items under the VOI LUT Sequence (0028,3010). If this Sequence does not exist in the Data Set, the property specifies 0.
This example will load a DICOM dataset, update its VOI LUT and then verify that it was updated properly.
using Leadtools;
using Leadtools.Dicom;
public void TestVoiLut()
{
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 VoiLutSize = 65536;
//Load DICOM File
ds.Load(dicomFileName, DicomDataSetLoadFlags.None);
ds.DeleteVoiLut();
DicomVoiLutAttributes VoiLutAttributes = new DicomVoiLutAttributes();
VoiLutAttributes.FirstStoredPixelValueMapped = 0;
VoiLutAttributes.EntryBits = 16;
VoiLutAttributes.NumberOfEntries = VoiLutSize;
int[] LutData = new int[VoiLutSize];
for (int i = 0; i < VoiLutSize; i++)
{
LutData[i] = i;
}
ds.SetVoiLut(0, VoiLutAttributes, LutData);
DicomVoiLutAttributes attributes = ds.GetVoiLut(0);
if (attributes != null)
{
Debug.Assert(attributes.FirstStoredPixelValueMapped == 0);
Debug.Assert(attributes.EntryBits == 16);
Debug.Assert(attributes.NumberOfEntries == VoiLutSize);
int[] data = ds.GetVoiLutData(0);
// Do something with the data
}
ds.Save(Path.Combine(LEAD_VARS.ImagesDir, "DICOM", "VOILut.dcm"), DicomDataSetSaveFlags.None);
}
DicomEngine.Shutdown();
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images";
}