AddWeightedCommand Class

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

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

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

'Usage
 
Dim instance As AddWeightedCommand

public sealed class AddWeightedCommand : Leadtools.ImageProcessing.IRasterCommand

function Leadtools.ImageProcessing.Color.AddWeightedCommand()

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

This command can be used to modify the brightness (with the add operations) or remove the noise (with the average operations). Typically, you would call this command for a series of images taken of the same object at short intervals.
If the value of Type property is:
- Add, the command can be used to add several images of the same view to improve the lightness or brightness of the image. In this case, the value of Factor property will be ignored.
- Average, the command can be used to average several images. In this case, the factor property or parameter is ignored.
- AddWeighted, the command can be used to obtain an image as the sum of several weighted images. Each image in any position in the list has a corresponding weight factor in the same position in the Factor array. The real values are the weight factors divided by 100. For example if a weight factor is 131 its real value is 1.31. If Factor equals null, each image has the same weight factor of 100 and the result is the same as for Add.
- AverageWeighted, the command can eliminate random noise by performing a weighted average. Each image in any position in the list has a corresponding weight factor in the factor array. The real values are the weight factors in the array divided by 100. The weighted sum will be divided by the sum of the weights. If the factor equals null, each image has the same weight factor of 100 and the result is the same as for Average.
This command performs operations between data byte-by-byte. An image can be any color resolution. This method will allocate and store the resulting image in 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.

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

Public Sub AddWeightedCommandExample()
   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 Factors() As Integer
   ReDim Factors(4)
   'take the average between all rotated bitmaps, and put the result in the.
   Dim command As AddWeightedCommand = New AddWeightedCommand
   command.Type = AddWeightedCommandType.Average
   command.Factor = Factors
   command.Factor(0) = 100
   command.Factor(1) = 100
   command.Factor(2) = 100
   command.Factor(3) = 100
   command.Run(leadImage)
   codecs.Save(command.DestinationImage, Path.Combine(LEAD_VARS.ImagesDir, "AddWeightedCommandResult.Bmp"), RasterImageFormat.Bmp, 24)

End Sub

Public NotInheritable Class LEAD_VARS
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class

public void AddWeightedCommandExample()
   {
      // Load an image
      RasterCodecs codecs = new RasterCodecs();
      codecs.ThrowExceptionsOnInvalidImages = true;

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

      // Prepare the command
      //take the average between all rotated bitmaps, and put the result in the.
      AddWeightedCommand command = new AddWeightedCommand();
      command.Type = AddWeightedCommandType.Average;
      command.Factor = new int[5];
      command.Factor[0] = 100;
      command.Factor[1] = 100;
      command.Factor[2] = 100;
      command.Factor[3] = 100;
      command.Run(image);
      codecs.Save(command.DestinationImage, Path.Combine(LEAD_VARS.ImagesDir, "AddWeightedCommandResult.bmp"), RasterImageFormat.Bmp, 24);

   }

static class LEAD_VARS
{
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}

[TestMethod]
public async Task AddWeightedCommandExample()
{
   // 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
   //take the average between all rotated bitmaps, and put the result in the.
   AddWeightedCommand command = new AddWeightedCommand();
   command.Type = AddWeightedCommandType.Average;
   command.Factor = new int[5];
   command.Factor[0] = 100;
   command.Factor[1] = 100;
   command.Factor[2] = 100;
   command.Factor[3] = 100;
   command.Run(image);

   string destFileName = @"result.jpg";
   StorageFile saveFile = await Tools.AppLocalFolder.CreateFileAsync(destFileName);
   await codecs.SaveAsync(image, LeadStreamFactory.Create(saveFile), RasterImageFormat.Jpeg, 0);
}

public void AddWeightedCommandExample(RasterImage image, Stream outStream)
{
   // Prepare the command
   //take the average between all rotated bitmaps, and put the result in the.
   AddWeightedCommand command = new AddWeightedCommand();
   command.Type = AddWeightedCommandType.Average;
   command.Factor = new int[5];
   command.Factor[0] = 100;
   command.Factor[1] = 100;
   command.Factor[2] = 100;
   command.Factor[3] = 100;
   command.Run(image);
   // Save result image
   RasterCodecs codecs = new RasterCodecs();
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24);
   image.Dispose();
}

Public Sub AddWeightedCommandExample(ByVal image As RasterImage, ByVal outStream As Stream)
   ' Prepare the command
   'take the average between all rotated bitmaps, and put the result in the.
   Dim command As AddWeightedCommand = New AddWeightedCommand()
   command.Type = AddWeightedCommandType.Average
   command.Factor = New Integer(4){}
   command.Factor(0) = 100
   command.Factor(1) = 100
   command.Factor(2) = 100
   command.Factor(3) = 100
   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