DicomGetImageCallback Delegate

Summary

Called for each image that is loaded using GetImages(DicomElement element, int index, int count, int bitsPerPixel, RasterByteOrder order, DicomGetImageFlags flags, DicomGetImageCallback callback).

Syntax

C++/CLI

Java

public delegate bool DicomGetImageCallback( 
   int page, 
   int count 
)

public interface DicomGetImageCallback  
{ 
  public boolean onDicomGetImageCallback(int page, int count); 
}

public delegate bool DicomGetImageCallback(  
   int page, 
   int count 
)

Parameters

page
Zero based index of the image being loaded from the DicomDataSet.

count
Total number of images to be loaded. This is the same value passed to GetImages(DicomElement element, int index, int count, int bitsPerPixel, RasterByteOrder order, DicomGetImageFlags flags, DicomGetImageCallback callback).

Return Value

true to continue, false to abort the load.

Remarks

The GetImages(DicomElement element, int index, int count, int bitsPerPixel, RasterByteOrder order, DicomGetImageFlags flags, DicomGetImageCallback callback) method calls your DicomGetImageCallback for each image that is loaded.

Example

using Leadtools; 
using Leadtools.Dicom; 
 
 
private bool DicomTestGetImageCallback(int index, int count) 
{ 
   System.Diagnostics.Debug.WriteLine(string.Format("GetImage: {0} of {1}", index + 1, count)); 
   return true; 
} 
 
public void TestDicomGetImages() 
{ 
   string dicomFileName = Path.Combine(LEAD_VARS.ImagesDir, "DICOM", "IMAGE1.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("Sample: This dataset is missing the pixel data element"); 
         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; 
      } 
 
      // Get all the frames into a RasterImage object 
      RasterImage image = ds.GetImages(pixelDataElement, 0, imageInformation.FrameCount, 0, RasterByteOrder.Gray, 
                                       DicomGetImageFlags.AllowRangeExpansion | DicomGetImageFlags.AutoApplyModalityLut | DicomGetImageFlags.AutoApplyVoiLut, 
                                       DicomTestGetImageCallback); 
 
      if (image == null) 
      { 
         Console.WriteLine("Sample: Can't retrieve image"); 
         return; 
      } 
 
      Debug.WriteLine(string.Format("Total Images: {0}", image.PageCount)); 
 
   } 
   DicomEngine.Shutdown(); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
}

Requirements

Target Platforms

Reference

DicomGetImageCallback Members

Leadtools.Dicom Namespace

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Help Version 23.0.2024.8.20

Leadtools.Dicom Assembly

Introduction

Getting Started

Namespaces

Leadtools.Dicom Namespace