HistogramContrastCommand Constructor(Int32)

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

public HistogramContrastCommand( 
   int contrast
)

'Declaration
 
Public Function New( _
   ByVal contrast As Integer _
)

'Usage
 
Dim contrast As Integer
 
Dim instance As New HistogramContrastCommand(contrast)

public HistogramContrastCommand( 
   int contrast
)

function HistogramContrastCommand( 
   contrast 
)

public:
HistogramContrastCommand( 
   int contrast
)

Parameters

contrast: Amount of contrast change. Valid values are -1000 to +1000.

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

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

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

   ' Prepare the command
   ' Increase the contrast using the histogram by 25 percent of the possible range.
   Dim command As HistogramContrastCommand = New HistogramContrastCommand(250)
   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 HistogramContrastConstructorExample()
   {
      // Load an image
      RasterCodecs codecs = new RasterCodecs();
      codecs.ThrowExceptionsOnInvalidImages = true;

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

      // Prepare the command
      HistogramEqualizeCommand command = new HistogramEqualizeCommand(HistogramEqualizeType.Yuv);
      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 HistogramContrastConstructorExample()
{
   // Load an image
   RasterCodecs codecs = new RasterCodecs();
   codecs.ThrowExceptionsOnInvalidImages = true;
   // Load the image
   string srcFileName = @"Assets\Image1.cmp";
   StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName);
   RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile));

   // Prepare the command
   HistogramEqualizeCommand command = new HistogramEqualizeCommand(HistogramEqualizeType.Yuv);
   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 HistogramContrastConstructorExample(RasterImage image, Stream outStream)
{
   // Prepare the command
   HistogramEqualizeCommand command = new HistogramEqualizeCommand(HistogramEqualizeType.Yuv);
   command.Run(image);
   // Save result image
   RasterCodecs codecs = new RasterCodecs();
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24);
   image.Dispose();
}

Public Sub HistogramContrastConstructorExample(ByVal image As RasterImage, ByVal outStream As Stream)
   ' Prepare the command
   Dim command As HistogramEqualizeCommand = New HistogramEqualizeCommand(HistogramEqualizeType.Yuv)
   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

HistogramContrastCommand Class
HistogramContrastCommand Members
Overload List