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AddCommand Class
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Adds or averages the images in a list. Supported in Silverlight, Windows Phone 7

Object Model

AddCommand Class

Syntax

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

Example

Run the AddCommand on an image.

Visual BasicCopy Code
Public Sub AddCommandExample()
   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 AddCommand = New AddCommand(AddCommandType.Add)
   command.Run(leadImage)
   codecs.Save(command.DestinationImage, Path.Combine(LEAD_VARS.ImagesDir, "AddCommandResult.Bmp"), RasterImageFormat.Bmp, 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 AddCommandExample()
   {
      // Load an image
      RasterCodecs codecs = new RasterCodecs();
      codecs.ThrowExceptionsOnInvalidImages = true;

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

      // Prepare the command
      AddCommand command = new AddCommand(AddCommandType.Add);
      command.Run(image);
      codecs.Save(command.DestinationImage, Path.Combine(LEAD_VARS.ImagesDir, "AddCommandResult.bmp"), RasterImageFormat.Bmp, 24);

   }

static class LEAD_VARS
{
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}
SilverlightCSharpCopy Code
public void AddCommandExample(RasterImage image, Stream outStream)
{
   // Prepare the command
   AddCommand command = new AddCommand(AddCommandType.Add);
   command.Run(image);
   // Save result image
   RasterCodecs codecs = new RasterCodecs();
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24);
   image.Dispose();
}
SilverlightVBCopy Code
Public Sub AddCommandExample(ByVal image As RasterImage, ByVal outStream As Stream)
   ' Prepare the command
   Dim command As AddCommand = New AddCommand(AddCommandType.Add)
   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 operation can be used to add several images of the same view to improve the lightness or brightness of the image. It can also eliminate the random noise contained in these images by doing an average of all images.
  • This command performs operations between data byte-by-byte. An image can be any color resolution. This command will allocate and store the resulting image in the DestinationImage property. The image resulting from this operation is internally copied from the first image in the list, before performing the adding operation. The operations are performed based on the smallest width and height of the input images.
  • All images must be either signed or unsigned.
  • 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 command does not support 32-bit grayscale images.
For more information, refer to Changing Brightness and Contrast.

Inheritance Hierarchy

System.Object
   Leadtools.ImageProcessing.RasterCommand
      Leadtools.ImageProcessing.Color.AddCommand

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