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ObjectInformationCommand Class
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Leadtools.ImageProcessing.Effects Namespace : ObjectInformationCommand Class



Determines the position, orientation and roundness of the object in the image. Supported in Silverlight, Windows Phone 7

Object Model

ObjectInformationCommand Class

Syntax

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

Example

Run the Leadtools.ImageProcessing.Effects.ObjectInformationCommand on an image.

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

   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg"))

   ' Prepare the command
   'Get the objects center of mass and it's roundness. I am not interested in the axis' orientation, so I pass Nothing_
   Dim command As ObjectInformationCommand = New ObjectInformationCommand(False)
   command.Run(leadImage)

   MessageBox.Show("Angle = " + command.Angle.ToString + Chr(13) + _
      "Roundness = " + command.Roundness.ToString + Chr(13) + _
      "X = " + command.CenterOfMass.X.ToString + Chr(13) + _
      "Y = " + command.CenterOfMass.Y.ToString)

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 ObjectInformationCommandExample()
   {
      // Load an image
      RasterCodecs codecs = new RasterCodecs();
      codecs.ThrowExceptionsOnInvalidImages = true;

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

      // Prepare the command
      //Get the objects center of mass and it's roundness. I am not interested in the axis' orientation, so I pass NULL_
      ObjectInformationCommand command = new ObjectInformationCommand(false);
      command.Run(image);

      MessageBox.Show("Angle = "     + command.Angle + "\n" +
         "Roundness = " + command.Roundness + "\n" +
         "X = "         + command.CenterOfMass.X + "\n" +
         "Y = "         + command.CenterOfMass.Y);

   }

static class LEAD_VARS
{
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}
SilverlightCSharpCopy Code
public void ObjectInformationCommandExample(RasterImage image)
{
   // Prepare the command
   //Get the objects center of mass and it's roundness. I am not interested in the axis' orientation, so I pass NULL_
   ObjectInformationCommand command = new ObjectInformationCommand(false);
   command.Run(image);
   Debug.WriteLine("Angle = " + command.Angle + "\n" +
      "Roundness = " + command.Roundness + "\n" +
      "X = " + command.CenterOfMass.X + "\n" +
      "Y = " + command.CenterOfMass.Y);
}
SilverlightVBCopy Code
Public Sub ObjectInformationCommandExample(ByVal image As RasterImage)
   ' Prepare the command
   'Get the objects center of mass and it's roundness. I am not interested in the axis' orientation, so I pass NULL_
   Dim command As ObjectInformationCommand = New ObjectInformationCommand(False)
   command.Run(image)
   Debug.WriteLine("Angle = " & command.Angle + Constants.vbLf & "Roundness = " & command.Roundness + Constants.vbLf & "X = " & command.CenterOfMass.X + Constants.vbLf & "Y = " & command.CenterOfMass.Y)
End Sub

Remarks

  • All the objects in the image are considered to be a single object. This command determines various attributes of the object in the image to identify the objects and to determine their position and orientation. If you do not need certain values pass null instead.
  • The results point and angle information obtained by this command are multiplied by 100 in order to obtain more precision. To get the actual results, divide by 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 signed data images.
  • This command does not support 32-bit grayscale images.

Inheritance Hierarchy

System.Object
   Leadtools.ImageProcessing.RasterCommand
      Leadtools.ImageProcessing.Effects.ObjectInformationCommand

Requirements

Target Platforms: Silverlight 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7, MAC OS/X (Intel Only)

See Also