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ColorIntensityBalanceCommand Class
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Changes the distribution of the red, green, or blue channels. This command is available in the Raster Pro and above toolkits. Supported in Silverlight, Windows Phone 7

Object Model

ColorIntensityBalanceCommand ClassColorIntensityBalanceCommandData ClassColorIntensityBalanceCommandData ClassColorIntensityBalanceCommandData Class

Syntax

Visual Basic (Declaration) 
Public Class ColorIntensityBalanceCommand 
   Inherits Leadtools.ImageProcessing.RasterCommand
   Implements IRasterCommand 
Visual Basic (Usage)Copy Code
Dim instance As ColorIntensityBalanceCommand
C# 
public class ColorIntensityBalanceCommand : Leadtools.ImageProcessing.RasterCommand, IRasterCommand 
C++/CLI 
public ref class ColorIntensityBalanceCommand : public Leadtools.ImageProcessing.RasterCommand, IRasterCommand 

Example

Run the ColorIntensityBalanceCommand on an image, and balance the colors by increasing the red channel values.

Visual BasicCopy Code
Public Sub ColorIntensityBalanceCommandExample()
   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 ColorIntensityBalanceCommand = New ColorIntensityBalanceCommand
   Dim Shadow As ColorIntensityBalanceCommandData = New ColorIntensityBalanceCommandData
   Dim MidTone As ColorIntensityBalanceCommandData = New ColorIntensityBalanceCommandData
   Dim HighLight As ColorIntensityBalanceCommandData = New ColorIntensityBalanceCommandData

   Shadow.Red = 60
   Shadow.Blue = 0
   Shadow.Green = 0

   MidTone.Red = 40
   MidTone.Blue = 0
   MidTone.Green = 0

   HighLight.Red = 70
   HighLight.Blue = 0
   HighLight.Green = 0

   command.Shadows = Shadow
   command.MidTone = MidTone
   command.HighLight = HighLight
   command.Luminance = False

   ' Balance the colors by increasing the red channel values.
   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
C#Copy Code
public void ColorIntensityBalanceCommandExample()
   {
      // Load an image
      RasterCodecs codecs = new RasterCodecs();
      codecs.ThrowExceptionsOnInvalidImages = true;

      RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg"));

      // Prepare the command
      ColorIntensityBalanceCommand command       = new ColorIntensityBalanceCommand();
      ColorIntensityBalanceCommandData Shadows   = new ColorIntensityBalanceCommandData();
      ColorIntensityBalanceCommandData MidTone   = new ColorIntensityBalanceCommandData();
      ColorIntensityBalanceCommandData HighLight = new ColorIntensityBalanceCommandData();

      Shadows.Red    = 60;
      Shadows.Blue   = 0;
      Shadows.Green  = 0;

      MidTone.Red    = 40;
      MidTone.Blue   = 0;
      MidTone.Green  = 0;

      HighLight.Red    = 70;
      HighLight.Blue   = 0;
      HighLight.Green  = 0;

      command.Shadows   = Shadows;
      command.MidTone   = MidTone;
      command.HighLight = HighLight;
      command.Luminance = false;

      // Balance the colors by increasing the red channel values.
      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";
}
SilverlightCSharpCopy Code
public void ColorIntensityBalanceCommandExample(RasterImage image, Stream outStream)
{
   // Prepare the command
   ColorIntensityBalanceCommand command       = new ColorIntensityBalanceCommand();
   ColorIntensityBalanceCommandData Shadows   = new ColorIntensityBalanceCommandData();
   ColorIntensityBalanceCommandData MidTone   = new ColorIntensityBalanceCommandData();
   ColorIntensityBalanceCommandData HighLight = new ColorIntensityBalanceCommandData();
   Shadows.Red    = 60;
   Shadows.Blue   = 0;
   Shadows.Green  = 0;

   MidTone.Red    = 40;
   MidTone.Blue   = 0;
   MidTone.Green  = 0;

   HighLight.Red    = 70;
   HighLight.Blue   = 0;
   HighLight.Green  = 0;

   command.Shadows   = Shadows;
   command.MidTone   = MidTone;
   command.HighLight = HighLight;
   command.Luminance = false;

   // Balance the colors by increasing the red channel values.
   command.Run(image);

   // Save result image
   RasterCodecs codecs = new RasterCodecs();
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24);
   image.Dispose();
}
SilverlightVBCopy Code
Public Sub ColorIntensityBalanceCommandExample(ByVal image As RasterImage, ByVal outStream As Stream)
   ' Prepare the command
   Dim command As ColorIntensityBalanceCommand = New ColorIntensityBalanceCommand()
   Dim [Shadows] As ColorIntensityBalanceCommandData = New ColorIntensityBalanceCommandData()
   Dim MidTone As ColorIntensityBalanceCommandData = New ColorIntensityBalanceCommandData()
   Dim HighLight As ColorIntensityBalanceCommandData = New ColorIntensityBalanceCommandData()
   [Shadows].Red = 60
   [Shadows].Blue = 0
   [Shadows].Green = 0

   MidTone.Red = 40
   MidTone.Blue = 0
   MidTone.Green = 0

   HighLight.Red = 70
   HighLight.Blue = 0
   HighLight.Green = 0

   command.Shadows = [Shadows]
   command.MidTone = MidTone
   command.HighLight = HighLight
   command.Luminance = False

   ' Balance the colors by increasing the red channel values.
   command.Run(image)

   ' Save result image
   Dim codecs As RasterCodecs = New RasterCodecs()
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24)
   image.Dispose()
End Sub

Remarks

  • This command changes the distribution of the red, green, or blue channels to make the colors in the image more accurate or more different.
  • Each color component is treated independently. The color range for each component is split into shadows, midtones and highlights based on the intensity. The values in each range are adjusted differently using the ColorIntensityBalanceCommandData classes. Positive values in a ColorIntensityBalanceCommandData class for a component cause that particular component to become brighter, whereas negative values cause the component to become darker. A value of 0 leaves the component unchanged.
  • The preserve luminance option aims to minimize the luminance change in the image.
  • This command supports only RGB images. It does not support grayscale images.
  • This command supports 48 and 64-bit color images. Support for 48 and 64-bit color images is available only in the Document/Medical toolkits.
  • This command does not support signed data images.
  • This command does not support 32-bit grayscale images.
For more information, refer to Changing Brightness and Contrast.
For more information, refer to Correcting Colors.

Inheritance Hierarchy

System.Object
   Leadtools.ImageProcessing.RasterCommand
      Leadtools.ImageProcessing.Color.ColorIntensityBalanceCommand

Requirements

Target Platforms: Silverlight, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7, MAC OS/X (Intel Only)

See Also