CorrelationCommand Constructor(RasterImage,LeadPoint[],int,int,int)

Summary

Initializes a new CorrelationCommand class object with explicit parameters.

Syntax

Objective-C

C++/CLI

Java

Python

public CorrelationCommand( 
   RasterImage correlationImage, 
   LeadPoint[] points, 
   int xStep, 
   int yStep, 
   int threshold 
)

- (instancetype)initWithCorrelationImage:(nullable LTRasterImage *)correlationImage points:(nullable NSArray<NSValue *> *)points xStep:(NSUInteger)xStep yStep:(NSUInteger)yStep threshold:(NSUInteger)threshold NS_DESIGNATED_INITIALIZER;

public CorrelationCommand( 
   RasterImage correlationImage, 
   LeadPoint[] points, 
   int xStep, 
   int yStep, 
   int threshold 
);

public: 
CorrelationCommand(  
   RasterImage^ correlationImage, 
   array<LeadPoint>^ points, 
   int xStep, 
   int yStep, 
   int threshold 
)

__init__(self,correlationImage,points,xStep,yStep,threshold) # Overloaded constructor

Parameters

correlationImage
RasterImage object that references the image for which to search.

points
An array of LeadPoint structures. This array will be updated with the starting points for the correlated areas.

xStep
Step size in the X direction (along image width), in pixels. For best results, use 1. This parameter accepts only positive values.

yStep
Step size in the Y direction (along image height), in pixels. For best results, use 1. This parameter accepts only positive values.

threshold
Value that indicates the correlation threshold, which is a measure of association required to consider two areas to be correlated. If the correlation value between correlationImage and an area in the image to be searched (the Run method image) is less than the correlation threshold they are u ncorrelated. Valid values range from 0 (zero resemblance) to 100 (perfect resemblance).

Example

Run the CorrelationCommand on an image.

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
 
public void CorrelationConstructorExample() 
{ 
   // 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(); 
   LeadPoint[] points = new LeadPoint[90]; 
 
   CorrelationCommand command = new CorrelationCommand(dstImage, points, 1, 1, 70); 
   // 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:\LEADTOOLS22\Resources\Images"; 
}

Requirements

Target Platforms

Reference

CorrelationCommand Class

CorrelationCommand Members

Overload List

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Help Version 22.0.2023.11.1

Leadtools.ImageProcessing.Core Assembly

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