GrayScaleExtendedCommand Class

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

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

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

'Usage
 
Dim instance As GrayScaleExtendedCommand

public sealed class GrayScaleExtendedCommand : Leadtools.ImageProcessing.IRasterCommand

function Leadtools.ImageProcessing.Color.GrayScaleExtendedCommand()

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

RedFactor + GreenFactor + BlueFactor must equal 1000. (Internally the values are divided by 1000).
For each pixel in the image the red, green and blue values are modified by the RedFactor, GreenFactor and BlueFactor properties, respectively. This allows the user to give more weight to one color, essentially enhancing that color, before the pixel is converted to grayscale.
For example, if an object of this class has the RedFactor set to 500, the GreenFactor set to 250 and the BlueFactor set to 250, the red value of each pixel will get 50 percent of the weight when determining the grayscale value. The green value will get 25 percent of the weight and the blue value will get 25 percent of the weight when determining the grayscale value. This highlights or enhances the red in the image, prior to conversion to grayscale.
This class supports 12 and 16-bit grayscale and 48 and 64-bit color images. Support for 12 and 16-bit grayscale and 48 and 64-bit color images is available only in the Document/Medical toolkits.
This command does not support signed images.

For more information, refer to Grayscale Images.

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

Public Sub GrayScaleExtendedCommandExample()
   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 GrayScaleExtendedCommand = New GrayScaleExtendedCommand
   command.RedFactor = 300
   command.GreenFactor = 590
   command.BlueFactor = 110
   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 GrayScaleExtendedCommandExample()
   {
      // Load an image
      RasterCodecs codecs = new RasterCodecs();
      codecs.ThrowExceptionsOnInvalidImages = true;

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

      // Prepare the command
      GrayScaleExtendedCommand command = new GrayScaleExtendedCommand();
      command.RedFactor   = 300;
      command.GreenFactor = 590;
      command.BlueFactor  = 110;
      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 GrayScaleExtendedCommandExample()
{
   // 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
   GrayScaleExtendedCommand command = new GrayScaleExtendedCommand();
   command.RedFactor   = 300;
   command.GreenFactor = 590;
   command.BlueFactor  = 110;
   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 GrayScaleExtendedCommandExample(RasterImage image, Stream outStream)
{
   // Prepare the command
   GrayScaleExtendedCommand command = new GrayScaleExtendedCommand();
   command.RedFactor   = 300;
   command.GreenFactor = 590;
   command.BlueFactor  = 110;
   command.Run(image);
   // Save result image
   RasterCodecs codecs = new RasterCodecs();
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24);
   image.Dispose();
}

Public Sub GrayScaleExtendedCommandExample(ByVal image As RasterImage, ByVal outStream As Stream)
   ' Prepare the command
   Dim command As GrayScaleExtendedCommand = New GrayScaleExtendedCommand()
   command.RedFactor = 300
   command.GreenFactor = 590
   command.BlueFactor = 110
   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

GrayScaleExtendedCommand Members
Leadtools.ImageProcessing.Color Namespace
Grayscale Images
Leadtools.ImageProcessing.GrayscaleCommand
Leadtools.RasterImage.IsGray
ConvertToColoredGrayCommand Class
BalanceColorsCommand Class
SwapColorsCommand Class