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ColorLevelCommandData Class
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The ColorLevelCommandData class contains color-leveling information for a specific color channel.

Syntax

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

Example

Visual BasicCopy Code
ImageProcessing.Color.ColorLevelCommandData
   Public Sub ColorLevelCommandDataExample()
      RasterCodecs.Startup()
      Dim codecs As New RasterCodecs()
      codecs.ThrowExceptionsOnInvalidImages = True

      Dim leadImage As RasterImage = codecs.Load("C:\Program Files\LEAD Technologies\LEADTOOLS 15\Images\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, "C:\Program Files\LEAD Technologies\LEADTOOLS 15\Images\Result.jpg", RasterImageFormat.Jpeg, 24)

      RasterCodecs.Shutdown()
   End Sub
C#Copy Code
ImageProcessing.Color.ColorLevelCommandData 
      public void ColorLevelCommandDataExample() 
      { 
         // Load an image 
         RasterCodecs.Startup(); 
         RasterCodecs codecs = new RasterCodecs(); 
         codecs.ThrowExceptionsOnInvalidImages = true; 
 
         RasterImage image = codecs.Load(@"C:\Program Files\LEAD Technologies\LEADTOOLS 15\Images\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, @"C:\Program Files\LEAD Technologies\LEADTOOLS 15\Images\Result.jpg", RasterImageFormat.Jpeg, 24); 
 
         RasterCodecs.Shutdown(); 
      }

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 ColorLevelCommand class.
  • This class does not support 32-bit grayscale images.

Inheritance Hierarchy

System.Object
   Leadtools.ImageProcessing.Color.ColorLevelCommandData

Requirements

Target Platforms: Microsoft .NET Framework 2.0, Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

See Also