Threshold Property

Summary

Gets or sets a value that indicates the correlation threshold.

Syntax

Objective-C

C++/CLI

Java

Python

public int Threshold { get; set; }

@property (nonatomic, assign) NSUInteger threshold;

public int getThreshold(); 
public void setThreshold( 
   int intValue 
);

public: 
property int Threshold { 
   int get(); 
   void set (    int ); 
}

Threshold # get and set (CorrelationListCommand)

Property Value

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 an image in the list and an area in the image is less than the correlation threshold they are uncorrelated. Valid values range from 0 (zero resemblance) to 100 (perfect resemblance).

Example

Java

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing; 
using Leadtools.ImageProcessing.Core; 
 
public void CorrelationListCommandExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "clean.tif")); 
 
   CorrelationListCommand command = new CorrelationListCommand(); 
   CopyRectangleCommand copyRectangle = new CopyRectangleCommand(); 
 
   LeadRect rc_cor = new LeadRect(458, 591, 21, 28); 
   copyRectangle.Rectangle = rc_cor; 
   copyRectangle.Run(image); 
   command.CorrelationImage = copyRectangle.DestinationImage.Clone(); 
 
   rc_cor = new LeadRect(507, 591, 21, 28); 
   copyRectangle.Rectangle = rc_cor; 
   copyRectangle.Run(image); 
   command.CorrelationImage.AddPage(copyRectangle.DestinationImage.Clone()); 
 
   command.Points = new LeadPoint[30]; 
   command.ListIndex = new int[30]; 
   command.Threshold = 90; 
   command.XStep = 1; 
   command.YStep = 1; 
   command.Run(image); 
 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
}

 
import java.io.File; 
import java.io.IOException; 
 
import org.junit.*; 
import org.junit.runner.JUnitCore; 
import org.junit.runner.Result; 
import org.junit.runner.notification.Failure; 
import static org.junit.Assert.*; 
 
import leadtools.*; 
import leadtools.codecs.*; 
import leadtools.imageprocessing.CopyRectangleCommand; 
import leadtools.imageprocessing.core.CorrelationListCommand; 
 
 
public void correlationListCommandExample() { 
   final String LEAD_VARS_IMAGES_DIR = "C:\\LEADTOOLS23\\Resources\\Images"; 
   final String outputFileName = combine(LEAD_VARS_IMAGES_DIR, "cleanResult.tif"); 
 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.setThrowExceptionsOnInvalidImages(true); 
 
   RasterImage image = codecs.load(combine(LEAD_VARS_IMAGES_DIR, "clean.tif")); 
 
   CorrelationListCommand command = new CorrelationListCommand(); 
   CopyRectangleCommand copyRectangle = new CopyRectangleCommand(); 
 
   LeadRect rc_cor = new LeadRect(458, 592, 21, 28); 
   copyRectangle.setRectangle(rc_cor); 
   copyRectangle.run(image); 
   command.setCorrelationImage(copyRectangle.getDestinationImage().clone()); 
 
   rc_cor = new LeadRect(507, 591, 21, 28); 
   copyRectangle.setRectangle(rc_cor); 
   copyRectangle.run(image); 
   command.getCorrelationImage().addPage(copyRectangle.getDestinationImage().clone()); 
 
   command.setPoints(new LeadPoint[30]); 
   command.setListIndex(new int[30]); 
   command.setThreshold(90); 
   command.setXStep(1); 
   command.setYStep(1); 
   command.run(image); 
   codecs.save(image, outputFileName, RasterImageFormat.JPEG, 0); 
 
   assertTrue(new File(outputFileName).exists()); 
   System.out.println("File saved to: " + outputFileName); 
}

Requirements

Target Platforms

Reference

CorrelationListCommand Class

CorrelationListCommand Members

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Help Version 23.0.2024.3.3

Leadtools.ImageProcessing.Core Assembly

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Leadtools.ImageProcessing.Core Namespace

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