NumberOfPoints Property

Summary

This property is updated with the number of areas in the image actually found to be correlated to the correlation image.

Syntax

Objective-C

C++

Java

public int NumberOfPoints { get; }

Public ReadOnly Property NumberOfPoints As Integer

@property (nonatomic, assign, readonly) NSUInteger numberOfPoints

public int getNumberOfPoints()

public: 
property int NumberOfPoints { 
   int get(); 
}

Property Value

Value that indicates the number of areas in the image actually found to be correlated to the correlation image. Its maximum value is the length of the Points array.

Example

Run the CorrelationCommand on an image.

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
 
public void NumberOfPointsPropertyExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "clean.tif")); 
 
   // Prepare the command 
   RasterImage dstImage = image.Clone(); 
   CorrelationCommand command = new CorrelationCommand(); 
   command.CorrelationImage = dstImage; 
   command.Threshold = 70; 
   command.XStep = 1; 
   command.YStep = 1; 
   command.Points = new LeadPoint[90]; 
   // Apply the correlation filter. 
   command.Run(image); 
 
   MessageBox.Show("The number of points are:" + command.NumberOfPoints.ToString()); 
 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; 
}

Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Core 
 
Public Sub NumberOfPointsPropertyExample() 
   Dim codecs As New RasterCodecs() 
   codecs.ThrowExceptionsOnInvalidImages = True 
 
   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "clean.tif")) 
 
   ' Prepare the command 
   Dim points() As LeadPoint 
   ReDim points(89) 
 
   Dim DstImage As RasterImage = leadImage.Clone() 
   Dim command As CorrelationCommand = New CorrelationCommand 
   command.CorrelationImage = DstImage 
   command.Threshold = 70 
   command.XStep = 1 
   command.YStep = 1 
   command.Points = points 
   ' Apply the correlation filter. 
   command.Run(leadImage) 
 
   MessageBox.Show("The number of points are:" & command.NumberOfPoints.ToString()) 
 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" 
End Class

c#[Silverlight C# Example] 
using Leadtools; 
using Leadtools.Examples; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
 
public void NumberOfPointsPropertyExample(RasterImage image, Stream outStream) 
{ 
   // Prepare the command 
   RasterImage dstImage = image.Clone(); 
   CorrelationCommand command = new CorrelationCommand(); 
   command.CorrelationImage = dstImage; 
   command.Threshold = 70; 
   command.XStep = 1; 
   command.YStep = 1; 
   command.Points = new LeadPoint[90]; 
   // Apply the correlation filter. 
   command.Run(image); 
 
   Debug.WriteLine("The number of points are:" + command.NumberOfPoints.ToString()); 
 
   // Save result image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24); 
   image.Dispose(); 
} 
vb[Silverlight VB Example] 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Core 
 
Public Sub NumberOfPointsPropertyExample(ByVal image As RasterImage, ByVal outStream As Stream) 
   ' Prepare the command 
   Dim dstImage As RasterImage = image.Clone() 
   Dim command As CorrelationCommand = New CorrelationCommand() 
   command.CorrelationImage = dstImage 
   command.Threshold = 70 
   command.XStep = 1 
   command.YStep = 1 
   command.Points = New LeadPoint(89) {} 
   ' Apply the correlation filter. 
   command.Run(image) 
 
   Debug.WriteLine("The number of points are:" & command.NumberOfPoints.ToString()) 
 
   ' Save result image 
   Dim codecs As RasterCodecs = New RasterCodecs() 
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24) 
   image.Dispose() 
End Sub

Requirements

Target Platforms

Reference

CorrelationCommand Class

CorrelationCommand Members

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Help Version 20.0.2020.4.3

Leadtools.ImageProcessing.Core Assembly

Introduction

Getting Started

Namespaces

Leadtools.ImageProcessing.Core Namespace

Assemblies