EdgeDetectorCommand Constructor(int,EdgeDetectorCommandType)

Summary

Initializes a new EdgeDetectorCommand class object with explicit parameters.

Syntax

Objective-C

C++/CLI

Java

Python

public EdgeDetectorCommand( 
   int threshold, 
   EdgeDetectorCommandType filter 
)

- (instancetype)initWithThreshold:(NSInteger)threshold filter:(LTEdgeDetectorCommandType)filter NS_DESIGNATED_INITIALIZER;

public EdgeDetectorCommand( 
   int threshold, 
   EdgeDetectorCommandType filter 
);

public: 
EdgeDetectorCommand(  
   int threshold, 
   EdgeDetectorCommandType filter 
)

__init__(self,threshold,filter) # Overloaded constructor

Parameters

threshold
Threshold value used to determine which pixels are edge pixels. If the difference determined for a pixel is greater than this value, the pixel is an edge pixel. This parameter only accepts positive values.

filter
Flag that indicates which edge detection filter to apply.

Example

Run the EdgeDetectorCommand on an image.

Java

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Effects; 
 
 
public void EdgeDetectorConstructorExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "ImageProcessingDemo\\NaturalFruits.jpg")); 
 
   // Prepare the command 
   EdgeDetectorCommand command = new EdgeDetectorCommand(60, EdgeDetectorCommandType.Laplace2); 
   // find the edges of the image. 
   command.Run(image); 
   codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24); 
 
} 
 
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.effects.*; 
 
 
public void edgeDetectorConstructorExample() { 
   final String LEAD_VARS_IMAGES_DIR = "C:\\LEADTOOLS23\\Resources\\Images"; 
 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.setThrowExceptionsOnInvalidImages(true); 
 
   RasterImage image = codecs.load(combine(LEAD_VARS_IMAGES_DIR, "NaturalFruits.jpg")); 
 
   // Prepare the command 
   EdgeDetectorCommand command = new EdgeDetectorCommand(60, EdgeDetectorCommandType.LAPLACE2); 
   // find the edges of the image. 
   int change = command.run(image); 
   assertTrue(change != RasterImageChangedFlags.NONE); 
 
   codecs.save(image, combine(LEAD_VARS_IMAGES_DIR, "Result.jpg"), RasterImageFormat.JPEG, 24); 
   System.out.println("Command run and image saved to " + combine(LEAD_VARS_IMAGES_DIR, "Result.jpg")); 
}

Requirements

Target Platforms

Reference

EdgeDetectorCommand Class

EdgeDetectorCommand Members

Overload List

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Help Version 23.0.2024.3.3

Leadtools.ImageProcessing.Effects Assembly

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Leadtools.ImageProcessing.Effects Namespace

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