ObjectCounterCommand Class

C#
Visual Basic
WinRT C#
Objective-C
Java
WinRT JavaScript
C++

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

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

'Usage
 
Dim instance As ObjectCounterCommand

public sealed class ObjectCounterCommand : Leadtools.ImageProcessing.IRasterCommand

function Leadtools.ImageProcessing.Core.ObjectCounterCommand()

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

This command retrieves the number of black objects on a white background in a binary image. The behavior of this command can be further modified by using an Event Handler that handles the ObjectCounterCommandEventArgs.
This command works only on 1-bit black and white images.
If a region is selected, only the selected region will be changed by this command. If there isn't a region selected, the whole image will be processed.
This command does not support signed data images.

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

Copy Code

Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing.Core

Public WithEvents objectCounterCommand_S1 As ObjectCounterCommand
Public Sub ObjectCounterCommandExample()
   Dim codecs As New RasterCodecs()
   codecs.ThrowExceptionsOnInvalidImages = True

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

   ' Prepare the command
   objectCounterCommand_S1 = New ObjectCounterCommand
   objectCounterCommand_S1.Run(leadImage)


End Sub

Private Sub ObjectCounterCommand_ObjectCounter_S1(ByVal sender As Object, ByVal e As ObjectCounterCommandEventArgs) Handles objectCounterCommand_S1.ObjectCounter

   Dim nRegionPixelSize As Integer
   Dim i As Integer
   Dim j As Integer
   nRegionPixelSize = 0
   For i = e.ObjectRectangle.Left To e.ObjectRectangle.Right - 1
      For j = e.ObjectRectangle.Top To e.ObjectRectangle.Bottom - 1
         nRegionPixelSize = nRegionPixelSize + 1
      Next j
   Next i
   MessageBox.Show("Region size in pixels is " + "( " + nRegionPixelSize.ToString() + " )")
End Sub

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

using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Core;

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

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

    // Prepare the command
    ObjectCounterCommand command = new ObjectCounterCommand();
    command.ObjectCounter += new EventHandler<ObjectCounterCommandEventArgs>(ObjectCounterEvent_S1);
    command.Run(image);

    MessageBox.Show("ObjectCountis" + "( " + command.Count + " )");

}

private void ObjectCounterEvent_S1(object sender, ObjectCounterCommandEventArgs e)
{
    int RegionPixelSize;
    RegionPixelSize = 0;

    for(int i = e.ObjectRectangle.Left; i < e.ObjectRectangle.Right; i ++)
    {
        for (int j = e.ObjectRectangle.Top; j < e.ObjectRectangle.Bottom; j++)
        { 
            if ( e.ObjectData[i][j] == 1)
            {
                RegionPixelSize++;
            }
        }
    }

    MessageBox.Show("Region size in pixels is" + "( " + RegionPixelSize + " )");
}

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

//    
//    public async Task ObjectCounterCommandExample()
//    {
//        // 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
//        ObjectCounterCommand command = new ObjectCounterCommand();
//        command.ObjectCounter += new EventHandler<ObjectCounterCommandEventArgs>(ObjectCounterEvent_S1);
//        command.Run(image);

//        Debug.WriteLine("ObjectCountis" + "( " + command.Count + " )");

//    }

//    private void ObjectCounterEvent_S1(object sender, ObjectCounterCommandEventArgs e)
//    {
//        int RegionPixelSize;
//        RegionPixelSize = 0;
        
//        for(int i = e.ObjectRectangle.X; i < e.ObjectRectangle.Width; i ++)
//        {
//            for (int j = e.ObjectRectangle.Y; j < e.ObjectRectangle.Height; j++)
//            { 
//                if ( e.ObjectData[i][j] == 1)
//                {
//                    RegionPixelSize++;
//                }
//            }
//        }
        
//        Debug.WriteLine("Region size in pixels is" + "( " + RegionPixelSize + " )");
//    }
//

Target Platforms

Reference

ObjectCounterCommand Members
Leadtools.ImageProcessing.Core Namespace