FourierTransformInformation Property

Summary

FourierTransformInformation structure that contains information about the transform. The Data property of the FourierTransformInformation object is a two-dimensional array that will hold the frequency components of the image.

Syntax

Objective-C

C++/CLI

Java

Python

public FourierTransformInformation FourierTransformInformation { get; set; }

@property (nonatomic, strong, null_unspecified) LTFourierTransformInformation *fourierTransformInformation;

public FourierTransformInformation getFourierTransformInformation(); 
public void setFourierTransformInformation( 
   FourierTransformInformation fourierTransformInformation 
);

public: 
property FourierTransformInformation^ FourierTransformInformation { 
   FourierTransformInformation^ get(); 
   void set (    FourierTransformInformation^ ); 
}

FourierTransformInformation # get and set (FourierTransformDisplayCommand)

Property Value

FourierTransformInformation structure. The Data property of the FourierTransformInformation object is a two-dimensional array that will hold the frequency components of the image. Its dimensions must be the same as the image dimensions.

Example

Java

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
 
public void FourierTransformDisplayCommandExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, @"ImageProcessingDemo\FourierTransform.jpg")); 
 
   // Prepare the command 
   FourierTransformInformation FTArray = new FourierTransformInformation(image); 
   LeadRect rcRange = new LeadRect(0, 0, image.Width - 1, image.Height - 1); 
   DiscreteFourierTransformCommand DFTcommand = new DiscreteFourierTransformCommand(); 
   FourierTransformDisplayCommand command = new FourierTransformDisplayCommand(); 
 
   DFTcommand.FourierTransformInformation = FTArray; 
   DFTcommand.Range = rcRange; 
   DFTcommand.Flags = DiscreteFourierTransformCommandFlags.DiscreteFourierTransform | 
      DiscreteFourierTransformCommandFlags.Gray | 
      DiscreteFourierTransformCommandFlags.Range | 
      DiscreteFourierTransformCommandFlags.InsideX | 
      DiscreteFourierTransformCommandFlags.InsideY; 
   // apply DFT 
   DFTcommand.Run(image); 
 
   command.Flags = FourierTransformDisplayCommandFlags.Log | FourierTransformDisplayCommandFlags.Magnitude; 
   command.FourierTransformInformation = FTArray; 
   //plot frequency magnitude. 
   command.Run(image); 
 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
}

 
import static org.junit.Assert.assertTrue; 
 
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 leadtools.*; 
import leadtools.codecs.*; 
import leadtools.imageprocessing.core.*; 
 
 
public void fourierTransformDisplayCommandExample() { 
   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, "FourierTransform.jpg")); 
 
   // Prepare the command 
   FourierTransformInformation ftArray = new FourierTransformInformation(image); 
   FourierTransformDisplayCommand command = new FourierTransformDisplayCommand(); 
 
   command.setFlags(FourierTransformDisplayCommandFlags.LOG.getValue() 
         | FourierTransformDisplayCommandFlags.MAGNITUDE.getValue()); 
   command.setFourierTransformInformation(ftArray); 
 
   // Plot frequency magnitude. 
   command.run(image); 
   codecs.save(image, (combine(LEAD_VARS_IMAGES_DIR, "Result.jpg")), RasterImageFormat.JPEG, 0); 
 
   assertTrue(new File(combine(LEAD_VARS_IMAGES_DIR, "Result.jpg")).exists()); 
   System.out.println("Command run and image saved to " + combine(LEAD_VARS_IMAGES_DIR, "Result.jpg")); 
}

Requirements

Target Platforms

Reference

FourierTransformDisplayCommand Class

FourierTransformDisplayCommand 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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