ChangeContrastCommand Constructor(int)

Summary

Initializes a new ChangeContrastCommand class object with explicit parameters.

Syntax

Objective-C

C++/CLI

Java

Python

public ChangeContrastCommand( 
   int contrast 
)

- (instancetype)initWithContrast:(NSInteger)contrast NS_DESIGNATED_INITIALIZER;

public ChangeContrastCommand( 
   int contrast 
);

public: 
ChangeContrastCommand(  
   int contrast 
)

__init__(self,contrast) # Overloaded constructor

Parameters

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

Example

Run the ChangeContrastCommand on an image and increase its contrast.

Java

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:\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 changeContrastConstructorExample() { 
 
    final String LEAD_VARS_IMAGES_DIR = "C:\\LEADTOOLS23\\Resources\\Images"; 
    // Load an image 
    RasterCodecs codecs = new RasterCodecs(); 
    codecs.setThrowExceptionsOnInvalidImages(true); 
 
    RasterImage image = codecs.load(combine(LEAD_VARS_IMAGES_DIR, "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, combine(LEAD_VARS_IMAGES_DIR, "Results.jpg"), RasterImageFormat.JPEG, 24); 
 
    System.out.println("Command run and image saved to " + combine(LEAD_VARS_IMAGES_DIR, "Result.jpg")); 
    assertTrue(new File(LEAD_VARS_IMAGES_DIR, "Result.jpg").exists()); 
 
}

Requirements

Target Platforms

Reference

ChangeContrastCommand Class

ChangeContrastCommand Members

Overload List

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Help Version 23.0.2024.3.3

Leadtools.ImageProcessing.Color Assembly

Introduction

Getting Started

Namespaces

Leadtools.ImageProcessing.Color Namespace

Assemblies