HistogramContrastCommand Constructor(Int32)

C#
Visual Basic
WinRT C#
Java
Objective-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
)

- (instancetype)initWithContrast:(NSInteger)contrast

public HistogramContrastCommand(int contrast)

function HistogramContrastCommand( 
   contrast 
)

public:
HistogramContrastCommand( 
   int contrast
)

Parameters

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

Run the HistogramContrastCommand on an image and apply histogram equalization with YUV color space.

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

Copy Code

Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing.Color

   
Public Sub HistogramContrastConstructorExample()
   Dim codecs As New RasterCodecs()
   codecs.ThrowExceptionsOnInvalidImages = True
   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "IMAGE1.CMP"))

   ' 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

using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Color;

      
public void HistogramContrastConstructorExample()
{
   // Load an image
   RasterCodecs codecs = new RasterCodecs();
   codecs.ThrowExceptionsOnInvalidImages = true;
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "IMAGE1.CMP"));

   // 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";
}

using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Color;

      
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);
}

using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Color;
using Leadtools.Examples;

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();
}

Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing.Color

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

Reference

HistogramContrastCommand Class
HistogramContrastCommand Members
Overload List