MaskConvolutionCommand Class

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

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

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

'Usage
 
Dim instance As MaskConvolutionCommand

public sealed class MaskConvolutionCommand : Leadtools.ImageProcessing.IRasterCommand

function Leadtools.ImageProcessing.Effects.MaskConvolutionCommand()

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

For EdgeDetection, the results are the same for opposite angles. For example, angles 0 and 180 have the same result when used with the edge detection mask.
When an image undergoes image convolution each pixel of the image is multiplied by a mask to create a new pixel value. The mask is an array of values that describes the weight that should be given to each of the pixels surrounding a specific pixel. The new pixel value is the result of the mask sum being divided by the mask weight. Using different masks result in different alterations of the image. The masks used in this command result in different types of edge detection.
As an example of the different masks, consider the following example:

To obtain these images, the following settings were used:

Parameters	Emboss	Edge	ESplotch	Splotch
Angle	0	0	180	0
Depth	3	3	3	3
Height	250	250	100	100

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.

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

Public Sub MaskConvolutionCommandExample()
   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 New MaskConvolutionCommand

   ' Apply 3D emboss effect on the image, with 0 degrees as the angle of apparent light,
   ' depth of 1.50, and height of 3
   command.Angle = 0
   command.Depth = 150
   command.Height = 3
   command.Type = MaskConvolutionCommandType.Emboss
   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 MaskConvolutionCommandExample()
   {
      // Load an image
      RasterCodecs codecs = new RasterCodecs();
      codecs.ThrowExceptionsOnInvalidImages = true;

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

      // Prepare the command
      MaskConvolutionCommand command = new MaskConvolutionCommand();

      // Apply 3D emboss effect on the image, with 0 degrees as the angle of apparent light,
      // depth of 1.50, and height of 3
      command.Angle = 0;
      command.Depth = 150;
      command.Height = 3;
      command.Type = MaskConvolutionCommandType.Emboss;
      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 MaskConvolutionCommandExample()
{
   // 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
   MaskConvolutionCommand command = new MaskConvolutionCommand();

   // Apply 3D emboss effect on the image, with 0 degrees as the angle of apparent light,
   // depth of 1.50, and height of 3
   command.Angle = 0;
   command.Depth = 150;
   command.Height = 3;
   command.Type = MaskConvolutionCommandType.Emboss;
   command.Run(image);
   //Save as BMP
   string destFileName = @"result.bmp";
   StorageFile saveFile = await Tools.AppLocalFolder.CreateFileAsync(destFileName);
   await codecs.SaveAsync(image, LeadStreamFactory.Create(saveFile), RasterImageFormat.Bmp, 24);

}

public void MaskConvolutionCommandExample(RasterImage image, Stream outStream)
{
   // Prepare the command
   MaskConvolutionCommand command = new MaskConvolutionCommand();
   // Apply 3D emboss effect on the image, with 0 degrees as the angle of apparent light,
   // depth of 1.50, and height of 3
   command.Angle = 0;
   command.Depth = 150;
   command.Height = 3;
   command.Type = MaskConvolutionCommandType.Emboss;
   command.Run(image);
   // Save result image
   RasterCodecs codecs = new RasterCodecs();
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24);
   image.Dispose();
}

Public Sub MaskConvolutionCommandExample(ByVal image As RasterImage, ByVal outStream As Stream)
   ' Prepare the command
   Dim command As MaskConvolutionCommand = New MaskConvolutionCommand()
   ' Apply 3D emboss effect on the image, with 0 degrees as the angle of apparent light,
   ' depth of 1.50, and height of 3
   command.Angle = 0
   command.Depth = 150
   command.Height = 3
   command.Type = MaskConvolutionCommandType.Emboss
   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