Channels Property

Summary

The channels on which the Canny filter are applied.

Syntax

Objective-C

C++/CLI

Python

public CannyEdgeDetectorCommandChannels Channels {get; set;}

@property (nonatomic, assign) LTCannyEdgeDetectorCommandChannels channels;

public:  
   property CannyEdgeDetectorCommandChannels^ Channels 
   { 
      CannyEdgeDetectorCommandChannels^ get() 
      void set(CannyEdgeDetectorCommandChannels^ value) 
   }

Channels # get and set (CannyEdgeDetectorCommand)

Property Value

The channels on which the Canny filter are applied.

Remarks

The function will return ERROR_INV_PARAMETER if the image is gray and the value of this parameter is not zero.

Example

Java

using Leadtools; 
using Leadtools.Codecs; 
 
using Leadtools.ImageProcessing.Core; 
 
public void CannyEdgeDetectorCommandExample()  
{      
       
   RasterCodecs codecs = new RasterCodecs(); 
       
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "cannon.jpg"), 0, CodecsLoadByteOrder.Bgr, 1, 1); 
   CannyEdgeDetectorCommand Canny = new CannyEdgeDetectorCommand(); 
   Canny.Radius = 1; 
   Canny.LowThreshold = 2; 
   Canny.HighThreshold = 5; 
   Canny.Channels = CannyEdgeDetectorCommandChannels.Master; 
   Canny.Run(image); 
   codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "cannon_Canny.bmp"), Leadtools.RasterImageFormat.Bmp, 24, 1, 1, 1, Leadtools.Codecs.CodecsSavePageMode.Overwrite); 
 
   image.Dispose(); 
   codecs.Dispose(); 
       
} 
 
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.Test; 
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.core.CannyEdgeDetectorCommand; 
 
 
public void cannyEdgeDetectorCommandExample() { 
 
    RasterCodecs codecs = new RasterCodecs(); 
 
    final String LEAD_VARS_IMAGES_DIR = "C:\\LEADTOOLS23\\Resources\\Images"; 
    RasterImage image = codecs.load(combine(LEAD_VARS_IMAGES_DIR, "cannon.jpg"), 0, CodecsLoadByteOrder.BGR, 1, 1); 
    CannyEdgeDetectorCommand canny = new CannyEdgeDetectorCommand(); 
    canny.setRadius(1); 
    canny.setLowThreshold(2); 
    canny.setHighThreshold(5); 
    canny.run(image); 
    codecs.save(image, combine(LEAD_VARS_IMAGES_DIR, "cannon_Canny.bmp"), RasterImageFormat.BMP, 24, 1, 1, 1, 
            CodecsSavePageMode.OVERWRITE); 
 
    image.dispose(); 
    codecs.dispose(); 
 
    assertTrue(new File(combine(LEAD_VARS_IMAGES_DIR, "cannon_Canny.bmp")).exists()); 
    System.out.println("Command run and file exported to: " + combine(LEAD_VARS_IMAGES_DIR, "cannon_Canny.bmp")); 
 
}

Requirements

Target Platforms

Reference

CannyEdgeDetectorCommand Class

CannyEdgeDetectorCommand Members

Leadtools.ImageProcessing.Core Namespace

CannyEdgeDetectorCommandChannels

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Leadtools.ImageProcessing.Core Assembly

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Leadtools.ImageProcessing.Core Namespace

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