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HistogramContrastCommand Constructor(int)

Summary
Initializes a new HistogramContrastCommand class object with explicit parameters.
Syntax
C#
VB
Objective-C
C++
Java
Public Function New( _ 
   ByVal contrast As Integer _ 
) 
- (instancetype)initWithContrast:(NSInteger)contrast 
public HistogramContrastCommand(int contrast) 
public: 
HistogramContrastCommand(  
   int contrast 
) 

Parameters

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

Example

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

C#
VB
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:\LEADTOOLS21\Resources\Images"; 
} 
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:\LEADTOOLS21\Resources\Images" 
End Class 
Requirements

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.