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ChangeContrastCommand Constructor(int)

Summary

Initializes a new ChangeContrastCommand class object with explicit parameters.

Syntax

Java

Objective-C

WinRT C#

C++

public ChangeContrastCommand( 
   int contrast 
)

Public Function New( _ 
   ByVal contrast As Integer _ 
)

public ChangeContrastCommand(  
   int contrast 
)

- (instancetype)initWithContrast:(NSInteger)contrast

public ChangeContrastCommand(int contrast)

function ChangeContrastCommand(  
   contrast  
)

public: 
ChangeContrastCommand(  
   int contrast 
)

Parameters

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

Example

Run the ChangeContrastCommand on an image and increase its contrast.

Silverlight C#

Silverlight VB

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Color; 
 
public void ChangeContrastConstructorExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "ImageProcessingDemo\\Image1.jpg")); 
 
   // Prepare the command 
   ChangeContrastCommand command = new ChangeContrastCommand(250); 
 
   // Increase the contrast  by 25 percent  of the possible range. 
   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"; 
}

Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Color 
      Leadtools.Examples.Support.SetLicense() 
 
Public Sub ChangeContrastConstructorExample() 
   Dim codecs As New RasterCodecs() 
   codecs.ThrowExceptionsOnInvalidImages = True 
 
   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "ImageProcessingDemo\\Image1.jpg")) 
 
   ' Prepare the command 
   Dim command As ChangeContrastCommand = New ChangeContrastCommand(250) 
   'Increase the contrast  by 25 percent  of the possible range. 
   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; 
using Leadtools.Examples; 
 
public void ChangeContrastConstructorExample(RasterImage image, Stream outStream) 
{ 
   // Prepare the command 
   ChangeContrastCommand command = new ChangeContrastCommand(250); 
 
   // Increase the contrast  by 25 percent  of the possible range. 
   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 ChangeContrastConstructorExample(ByVal image As RasterImage, ByVal outStream As Stream) 
   ' Prepare the command 
   Dim command As ChangeContrastCommand = New ChangeContrastCommand(250) 
 
   ' Increase the contrast  by 25 percent  of the possible range. 
   command.Run(image) 
 
   ' Save result image 
   Dim codecs As RasterCodecs = New RasterCodecs() 
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24) 
   image.Dispose() 
End Sub

Requirements

Target Platforms

Reference

ChangeContrastCommand Class

ChangeContrastCommand Members

Overload List

Help Version 19.0.2017.10.27

Leadtools.ImageProcessing.Color Assembly

Introduction

Getting Started

Namespaces

Leadtools.ImageProcessing.Color Namespace

Assemblies