Contrast Property

Summary

Gets or sets a value that represents the amount of contrast change.

Syntax

Objective-C

C++/CLI

Java

Python

public int Contrast { get; set; }

@property (nonatomic, assign) NSInteger contrast;

public int getContrast(); 
public void setContrast( 
   int intValue 
);

public: 
property int Contrast { 
   int get(); 
   void set (    int ); 
}

Contrast # get and set (HistogramContrastCommand)

Property Value

Value that represents the amount of contrast change. Valid values are -1000 to +1000.

Example

Java

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Color; 
 
 
public void HistogramContrastCommandExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "IMAGE1.CMP")); 
 
   // Prepare the command 
   HistogramContrastCommand command = new HistogramContrastCommand(); 
   //Increase the contrast using the histogram by 25 percent of the possible range. 
   command.Contrast = 250; 
   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:\LEADTOOLS23\Resources\Images"; 
}

 
import java.io.File; 
import java.io.IOException; 
 
import org.junit.*; 
import org.junit.runner.JUnitCore; 
import org.junit.runner.Result; 
import org.junit.runner.notification.Failure; 
import static org.junit.Assert.*; 
 
import leadtools.*; 
import leadtools.codecs.*; 
import leadtools.imageprocessing.color.*; 
 
 
public void histogramContrastCommandExample() { 
 
   final String LEAD_VARS_IMAGES_DIR = "C:\\LEADTOOLS23\\Resources\\Images"; 
 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.setThrowExceptionsOnInvalidImages(true); 
   String srcFileName = combine(LEAD_VARS_IMAGES_DIR, "IMAGE1.CMP"); 
   RasterImage image = codecs.load(srcFileName); 
   System.out.println("Image loaded from: \n" + srcFileName); 
   // Prepare the command 
   HistogramContrastCommand command = new HistogramContrastCommand(); 
   // Increase the contrast using the histogram by 25 percent of the possible 
   // range. 
   command.setContrast(250); 
   // Change the contrast of the image 
   command.run(image); 
   codecs.save(image, combine(LEAD_VARS_IMAGES_DIR, "Result.jpg"), RasterImageFormat.JPEG, 24); 
 
   System.out.println("Command run and image saved to " + combine(LEAD_VARS_IMAGES_DIR, "result.jpg")); 
   assertTrue(new File(combine(LEAD_VARS_IMAGES_DIR, "result.jpg")).exists()); 
 
}

Requirements

Target Platforms

Reference

HistogramContrastCommand Class

HistogramContrastCommand Members

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Help Version 23.0.2024.3.3

Leadtools.ImageProcessing.Color Assembly

Introduction

Getting Started

Namespaces

Leadtools.ImageProcessing.Color Namespace

Assemblies