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AdaptiveContrastCommand Class

Performs adaptive contrast enhancement (ACE) to regions that are originally low in contrast. This command is available in the Medical and above toolkits.
public class AdaptiveContrastCommand : RasterCommand 
Public Class AdaptiveContrastCommand  
   Inherits RasterCommand 
@interface LTAdaptiveContrastCommand : LTRasterCommand 
public class AdaptiveContrastCommand extends RasterCommand 
public ref class AdaptiveContrastCommand : public RasterCommand   
  • Adaptive contrast enhancement (ACE) adjusts image contrast by giving more contrast to areas which are originally low in contrast. This is different from histogram-based techniques which are based on all image pixels (the histogram itself).
  • Local histogram equalization is another technique that can be used to reveal detail of areas, since it depends on area pixels only. Use LocalHistogramEqualizeCommand to perform a local histogram equalization.
  • This command supports 12 and 16-bit grayscale and 48 and 64-bit color images. Support for 12 and 16-bit grayscale and 48 and 64-bit color images is available only in the Document/Medical toolkits.
  • This command does not support 32-bit grayscale images.

Run the AdaptiveContrastCommand on an image.

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Color; 
public void AdaptiveContrastCommandExample() 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "sample1.cmp")); 
   // Prepare the command 
   AdaptiveContrastCommand command = new AdaptiveContrastCommand(); 
   command.Amount = 200; 
   command.Dimension = 9; 
   // Apply Adaptive Contrast Enhancement. 
   codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24); 
static class LEAD_VARS 
   public const string ImagesDir = @"C:\LEADTOOLS21\Resources\Images"; 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Color 
Public Sub AdaptiveContrastCommandExample() 
   Dim codecs As New RasterCodecs() 
   codecs.ThrowExceptionsOnInvalidImages = True 
   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "sample1.cmp")) 
   ' Prepare the command 
   Dim command As AdaptiveContrastCommand = New AdaptiveContrastCommand 
   command.Amount = 200 
   command.Dimension = 9 
   ' Apply Adaptive Contrast Enhancement. 
   codecs.Save(leadImage, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24) 
End Sub 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\LEADTOOLS21\Resources\Images" 
End Class 

Target Platforms

Help Version 21.0.2021.7.2
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Leadtools.ImageProcessing.Color Assembly
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2021 LEAD Technologies, Inc. All Rights Reserved.