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ColorLevelCommandData Class
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The ColorLevelCommandData class contains color-leveling information for a specific color channel. Supported in Silverlight, Windows Phone 7

Object Model

ColorLevelCommandData Class

Syntax

Visual Basic (Declaration) 
Public Class ColorLevelCommandData
Visual Basic (Usage)Copy Code
Dim instance As ColorLevelCommandData
C# 
public class ColorLevelCommandData
C++/CLI 
public ref class ColorLevelCommandData

Example

Run the Leadtools.ImageProcessing.Color.ColorLevelCommand on an image.

Visual BasicCopy Code
Public Sub ColorLevelCommandDataExample()
   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 blue As ColorLevelCommandData = New ColorLevelCommandData
   Dim master As ColorLevelCommandData = New ColorLevelCommandData
   'Specify Image levels
   blue.MinimumInput = 20
   blue.MaximumInput = 200
   blue.MinimumOutput = 0
   blue.MaximumOutput = 255
   blue.Gamma = 100
   ' Master will cause the image to be Inversed
   master.MinimumInput = 0
   master.MaximumInput = 255
   master.MinimumOutput = 255
   master.MaximumOutput = 0
   master.Gamma = 100
   ' Level the Blue and Master channels
   Dim command As ColorLevelCommand = New ColorLevelCommand(master, Nothing, Nothing, blue, ColorLevelCommandFlags.Blue Or ColorLevelCommandFlags.Master)
   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 ColorLevelCommandDataExample()
   {
      // Load an image
      RasterCodecs codecs = new RasterCodecs();
      codecs.ThrowExceptionsOnInvalidImages = true;

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

      // Prepare the command
      ColorLevelCommandData blue = new ColorLevelCommandData();
      ColorLevelCommandData master = new ColorLevelCommandData();
      //Specify Image levels
      blue.MinimumInput = 20;
      blue.MaximumInput = 200;
      blue.MinimumOutput = 0;
      blue.MaximumOutput = 255;
      blue.Gamma = 100;
      // Master will cause the image to be Inversed
      master.MinimumInput = 0;
      master.MaximumInput = 255;
      master.MinimumOutput = 255;
      master.MaximumOutput = 0;
      master.Gamma = 100;
      // Level the Blue and Master channels
      ColorLevelCommand command = new ColorLevelCommand(master, null, null, blue, ColorLevelCommandFlags.Blue | ColorLevelCommandFlags.Master);
      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 ColorLevelCommandDataExample(RasterImage image, Stream outStream)
{
   // Prepare the command
   ColorLevelCommandData blue = new ColorLevelCommandData();
   ColorLevelCommandData master = new ColorLevelCommandData();
   //Specify Image levels
   blue.MinimumInput = 20;
   blue.MaximumInput = 200;
   blue.MinimumOutput = 0;
   blue.MaximumOutput = 255;
   blue.Gamma = 100;
   // Master will cause the image to be Inversed
   master.MinimumInput = 0;
   master.MaximumInput = 255;
   master.MinimumOutput = 255;
   master.MaximumOutput = 0;
   master.Gamma = 100;
   // Level the Blue and Master channels
   ColorLevelCommand command = new ColorLevelCommand(master, null, null, blue, ColorLevelCommandFlags.Blue | ColorLevelCommandFlags.Master);
   command.Run(image);
   // Save result image
   RasterCodecs codecs = new RasterCodecs();
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24);
   image.Dispose();
}
SilverlightVBCopy Code
Public Sub ColorLevelCommandDataExample(ByVal image As RasterImage, ByVal outStream As Stream)
   ' Prepare the command
   Dim blue As ColorLevelCommandData = New ColorLevelCommandData()
   Dim master As ColorLevelCommandData = New ColorLevelCommandData()
   'Specify Image levels
   blue.MinimumInput = 20
   blue.MaximumInput = 200
   blue.MinimumOutput = 0
   blue.MaximumOutput = 255
   blue.Gamma = 100
   ' Master will cause the image to be Inversed
   master.MinimumInput = 0
   master.MaximumInput = 255
   master.MinimumOutput = 255
   master.MaximumOutput = 0
   master.Gamma = 100
   ' Level the Blue and Master channels
   Dim command As ColorLevelCommand = New ColorLevelCommand(master, Nothing, Nothing, blue, ColorLevelCommandFlags.Blue Or ColorLevelCommandFlags.Master)
   command.Run(image)
   ' Save result image
   Dim codecs As RasterCodecs = New RasterCodecs()
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24)
   image.Dispose()
End Sub

Remarks

  • The value of the MaximumInput property must be greater than the value of the MinimumInput property by at least 2.
  • If MinimumOutput > MaximumOutput then the image's shadows and highlights will be inverted for the given channel.
  • This class is used by the Leadtools.ImageProcessing.Color.ColorLevelCommand class.
  • This class does not support 32-bit grayscale images.

Inheritance Hierarchy

System.Object
   Leadtools.ImageProcessing.Color.ColorLevelCommandData

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