BalanceColorsCommand Class

Summary

Redistributes the RGB values of a specific image, using the values in the BalanceColorCommandFactor class.

Syntax

Objective-C

C++/CLI

Java

Python

public class BalanceColorsCommand : RasterCommand

@interface LTBalanceColorsCommand : LTRasterCommand

public class BalanceColorsCommand 
    extends RasterCommand

public ref class BalanceColorsCommand : public RasterCommand

class BalanceColorsCommand(RasterCommand):

Remarks

For each pixel in the image, the red value is modified using the values in the RedFactor property. This generates an intermediate red value, an intermediate green value and an intermediate blue value.
For each pixel in the image, the green value is modified using the values in the GreenFactor property. This generates an intermediate red value, an intermediate green value and an intermediate blue value.
For each pixel in the image the blue value is modified using the values in the BlueFactor property. This generates an intermediate red value, an intermediate green value and an intermediate blue value.
The intermediate red values are added to generate the new red value for the pixel. The intermediate green values are added to generate the new green value for the pixel and the intermediate blue values are added to generate the new blue value for the pixel. This triplet forms the new RGB value for the pixel.
The BalanceColorCommandFactor class has three components of type double: ToRed, ToGreen and ToBlue. The possible values of each component must be within the range: 0.0 - 100.0.
This class supports 48 and 64-bit colored images.
This method does not support signed data images.
This command does not support 32-bit grayscale images.

For more information, refer to Correcting Colors.

Balance Colors Function - Before

Balance Colors Function - After

View additional platform support for this Balance Colors function.

Example

Run the BalanceColorsCommand on an image.

Java

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Color; 
 
 
public void BalanceColorsCommandExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, @"ImageProcessingDemo\Image2.jpg")); 
 
   // Prepare the command 
   BalanceColorsCommand command = new BalanceColorsCommand(); 
   command.RedFactor = new BalanceColorCommandFactor(0.25, 0.50, 0.25); 
   command.GreenFactor = new BalanceColorCommandFactor(0.30, 0.40, 0.30); 
   command.BlueFactor = new BalanceColorCommandFactor(0.10, 0.60, 0.30); 
   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 balanceColorsCommandExample() { 
 
   String LEAD_VARS_IMAGES_DIR = "C:\\LEADTOOLS23\\Resources\\Images"; 
   String outputFilePath = combine(LEAD_VARS_IMAGES_DIR, "Result.jpg"); 
 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.setThrowExceptionsOnInvalidImages(true); 
 
   RasterImage image = codecs.load(combine(LEAD_VARS_IMAGES_DIR, "Image2.jpg")); 
 
   // Prepare the Command 
   BalanceColorsCommand command = new BalanceColorsCommand(); 
   command.setRedFactor(new BalanceColorCommandFactor(0.25, 0.50, 0.25)); 
   command.setGreenFactor(new BalanceColorCommandFactor(0.30, 0.40, 0.30)); 
   command.setBlueFactor(new BalanceColorCommandFactor(0.10, 0.60, 0.30)); 
   command.run(image); 
   codecs.save(image, outputFilePath, RasterImageFormat.JPEG, 24); 
 
   assertTrue(new File(outputFilePath).exists()); 
   System.out.println("Command run and image saved to " + (outputFilePath)); 
 
}