BalanceColorsCommand Class

Visual Basic
C#
WinRT C#
WinRT JavaScript
C++

public class BalanceColorsCommand : Leadtools.ImageProcessing.RasterCommand, Leadtools.ImageProcessing.IRasterCommand

'Declaration
 
Public Class BalanceColorsCommand 
   Inherits Leadtools.ImageProcessing.RasterCommand
   Implements Leadtools.ImageProcessing.IRasterCommand

'Usage
 
Dim instance As BalanceColorsCommand

public sealed class BalanceColorsCommand : Leadtools.ImageProcessing.IRasterCommand

function Leadtools.ImageProcessing.Color.BalanceColorsCommand()

public ref class BalanceColorsCommand : public Leadtools.ImageProcessing.RasterCommand, Leadtools.ImageProcessing.IRasterCommand

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 - 1.0.
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.

Visual Basic
C#
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Public Sub BalanceColorsCommandExample()
   Dim codecs As New RasterCodecs()
   codecs.ThrowExceptionsOnInvalidImages = True

   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg"))

   ' Prepare the command
   Dim command As BalanceColorsCommand = New BalanceColorsCommand
   command.RedFactor = New BalanceColorCommandFactor(0.25, 0.5, 0.25)
   command.GreenFactor = New BalanceColorCommandFactor(0.3, 0.4, 0.3)
   command.BlueFactor = New BalanceColorCommandFactor(0.1, 0.6, 0.3)
   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

public void BalanceColorsCommandExample()
   {
      // Load an image
      RasterCodecs codecs = new RasterCodecs();
      codecs.ThrowExceptionsOnInvalidImages = true;

      RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.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:\Users\Public\Documents\LEADTOOLS Images";
}

[TestMethod]
public async Task BalanceColorsCommandExample()
{
   // Load an image
   RasterCodecs codecs = new RasterCodecs();
   codecs.ThrowExceptionsOnInvalidImages = true;
   // Load the image
   string srcFileName = @"Assets\Image1.cmp";
   StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName);
   RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile));

   // 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);

   string destFileName = @"result.jpg";
   StorageFile saveFile = await Tools.AppLocalFolder.CreateFileAsync(destFileName);
   await codecs.SaveAsync(image, LeadStreamFactory.Create(saveFile), RasterImageFormat.Jpeg, 0);
}

public void BalanceColorsCommandExample(RasterImage image, Stream outStream)
{
   // 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);
   // Save result image
   RasterCodecs codecs = new RasterCodecs();
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24);
   image.Dispose();
}

Public Sub BalanceColorsCommandExample(ByVal image As RasterImage, ByVal outStream As Stream)
   ' Prepare the command
   Dim command As BalanceColorsCommand = 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)
   ' Save result image
   Dim codecs As RasterCodecs = New RasterCodecs()
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24)
   image.Dispose()
End Sub

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

BalanceColorsCommand Members
Leadtools.ImageProcessing.Color Namespace
Correcting Colors
ConvertToColoredGrayCommand Class
Leadtools.ImageProcessing.GrayscaleCommand
GrayScaleExtendedCommand Class
Leadtools.RasterImage.IsGray
AdjustTintCommand Class
Leadtools.ImageProcessing.Core.HalfToneCommand