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ColorReplaceCommand Class
See Also  Members   Example 



Replaces the specified color by adjusting values of hue, saturation and brightness.

Object Model


Syntax

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

Example

Run the ColorReplaceCommand on an image to change the red color by rotating its hue 90 degree.

Visual BasicCopy Code
Public Sub ColorReplaceCommandExample()
   RasterCodecs.Startup()
   Dim codecs As New RasterCodecs()
   codecs.ThrowExceptionsOnInvalidImages = True

   Dim leadImage As RasterImage = codecs.Load(LeadtoolsExamples.Common.ImagesPath.Path + "Master.jpg")

   ' Prepare the command
   Dim command As ColorReplaceCommand = New ColorReplaceCommand
   Dim Data() As ColorReplaceCommandColor
   ReDim Data(0)
   Data(0) = New ColorReplaceCommandColor
   Data(0).Color = New RasterColor(200, 0, 35)
   Data(0).Fuzziness = 300
   command.Colors = Data
   command.Hue = 9000
   command.Saturation = 0
   command.Brightness = 0
   command.Run(leadImage)
   codecs.Save(leadImage, LeadtoolsExamples.Common.ImagesPath.Path + "Result.jpg", RasterImageFormat.Jpeg, 24)

   RasterCodecs.Shutdown()
End Sub
C#Copy Code
public void ColorReplaceCommandExample() 
{ 
   // Load an image 
   RasterCodecs.Startup(); 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(LeadtoolsExamples.Common.ImagesPath.Path + "Master.jpg"); 
 
   // Prepare the command 
   ColorReplaceCommand command       = new ColorReplaceCommand(); 
   ColorReplaceCommandColor[] data   = new ColorReplaceCommandColor[1]; 
   data[0]                           = new ColorReplaceCommandColor(); 
   data[0].Color                     = new RasterColor(200, 0, 35); 
   data[0].Fuzziness                 = 100; 
   command.Colors                    = data; 
   command.Hue                       = 9000; 
   command.Saturation                = 0; 
   command.Brightness                = 0; 
   command.Run(image); 
   codecs.Save(image, LeadtoolsExamples.Common.ImagesPath.Path + "Result.jpg", RasterImageFormat.Jpeg, 24); 
 
   RasterCodecs.Shutdown(); 
}

Remarks

  • This command replaces the specified color by adjusting value of hue, saturation and brightness. The value of the Fuzziness property of the ColorReplaceCommandColor class determines the range around each color where the pixels will be changed according to Hue, Saturation and Brightness.
  • This command 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 commad does not support signed data images.
  • This command does not support 32-bit grayscale images.

For more information, refer to Introduction to Image Processing With LEADTOOLS.
For more information, refer to Correcting Colors.

Inheritance Hierarchy

System.Object
   Leadtools.ImageProcessing.RasterCommand
      Leadtools.ImageProcessing.Color.ColorReplaceCommand

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