AdaptiveContrastCommand Class

Visual Basic
C#
WinRT C#
WinRT JavaScript
C++

public class AdaptiveContrastCommand : Leadtools.ImageProcessing.RasterCommand, Leadtools.ImageProcessing.IRasterCommand

'Declaration
 
Public Class AdaptiveContrastCommand 
   Inherits Leadtools.ImageProcessing.RasterCommand
   Implements Leadtools.ImageProcessing.IRasterCommand

'Usage
 
Dim instance As AdaptiveContrastCommand

public sealed class AdaptiveContrastCommand : Leadtools.ImageProcessing.IRasterCommand

function Leadtools.ImageProcessing.Color.AdaptiveContrastCommand()

public ref class AdaptiveContrastCommand : public Leadtools.ImageProcessing.RasterCommand, Leadtools.ImageProcessing.IRasterCommand

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.

Visual Basic
C#
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Public Sub AdaptiveContrastCommandExample()
   Dim codecs As New RasterCodecs()
   codecs.ThrowExceptionsOnInvalidImages = True

   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg"))

   ' Prepare the command
   Dim command As AdaptiveContrastCommand = New AdaptiveContrastCommand
   command.Amount = 200
   command.Dimension = 9
   ' Apply Adaptive Contrast Enhancement.
   command.Run(leadImage)
   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:\Users\Public\Documents\LEADTOOLS Images"
End Class

public void AdaptiveContrastCommandExample()
   {
      // Load an image
      RasterCodecs codecs = new RasterCodecs();
      codecs.ThrowExceptionsOnInvalidImages = true;

      RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg"));

      // Prepare the command
      AdaptiveContrastCommand command = new AdaptiveContrastCommand();
      command.Amount    = 200;
      command.Dimension = 9;
      // Apply Adaptive Contrast Enhancement.
      command.Run(image);
      codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24);
   }

static class LEAD_VARS
{
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}

[TestMethod]
public async Task AdaptiveContrastCommandExample()
{
   // Load an image
   RasterCodecs codecs = new RasterCodecs();
   codecs.ThrowExceptionsOnInvalidImages = true;
   // Load the image
   string srcFileName = @"Assets\master.jpg";
   StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName);
   RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile));

   // Prepare the command
   AdaptiveContrastCommand command = new AdaptiveContrastCommand();
   command.Amount    = 200;
   command.Dimension = 9;
   // Apply Adaptive Contrast Enhancement.
   command.Run(image);

   string destFileName = @"result.jpg";
   StorageFile saveFile = await Tools.AppLocalFolder.CreateFileAsync(destFileName);
   await codecs.SaveAsync(image, LeadStreamFactory.Create(saveFile), RasterImageFormat.Jpeg, 0);
}

public void AdaptiveContrastCommandExample(RasterImage image, Stream outStream)
{
   // Prepare the command
   AdaptiveContrastCommand command = new AdaptiveContrastCommand();
   command.Amount    = 200;
   command.Dimension = 9;
   // Apply Adaptive Contrast Enhancement.
   command.Run(image);
   // Save result image
   RasterCodecs codecs = new RasterCodecs();
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24);
   image.Dispose();
}

Public Sub AdaptiveContrastCommandExample(ByVal image As RasterImage, ByVal outStream As Stream)
   ' Prepare the command
   Dim command As AdaptiveContrastCommand = New AdaptiveContrastCommand()
   command.Amount = 200
   command.Dimension = 9
   ' Apply Adaptive Contrast Enhancement.
   command.Run(image)
   ' Save result image
   Dim codecs As RasterCodecs = New RasterCodecs()
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24)
   image.Dispose()
End Sub

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

AdaptiveContrastCommand Members
Leadtools.ImageProcessing.Color Namespace
HistogramEqualizeCommand Class
ChangeContrastCommand Class
ChangeIntensityCommand Class
GammaCorrectCommand Class
HistogramContrastCommand Class
StretchIntensityCommand Class
InvertCommand Class
ChangeHueCommand Class
ChangeSaturationCommand Class
Leadtools.ImageProcessing.FillCommand
HistogramCommand Class
Leadtools.ImageProcessing.Core.WindowLevelCommand
LocalHistogramEqualizeCommand Class
ChangeHueSaturationIntensityCommand Class
AdjustTintCommand Class
GammaCorrectCommand Class