ObjectCounterCommand Class

C#
Visual Basic
WinRT C#
Java
Objective-C
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 no region selected, the entire image will be processed.
This command does not support signed data images.

Runs the ObjectCounterCommand on an image.

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

Copy Code

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

   
Public Sub ObjectCounterCommandExample()
   ' Load an image
   Dim codecs As RasterCodecs = New RasterCodecs()
   codecs.ThrowExceptionsOnInvalidImages = True
   Dim image As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "ImageProcessingDemo\\Image4.tif"))

   ' Prepare the command
   Dim command As ObjectCounterCommand = New ObjectCounterCommand()
   AddHandler command.ObjectCounter, AddressOf ObjectCounterEvent_S1
   command.Run(image)

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

End Sub

Private Sub ObjectCounterEvent_S1(ByVal sender As Object, ByVal e As ObjectCounterCommandEventArgs)

   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, @"ImageProcessingDemo\Image4.tif"));

    // 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