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FourierTransformDisplayCommand Constructor(FourierTransformInformation,FourierTransformDisplayCommandFlags)

Summary

Initializes a new FourierTransformDisplayCommand class object with explicit parameters.

Syntax

Objective-C

WinRT C#

C++

public FourierTransformDisplayCommand(  
   Leadtools.Imageprocessing.Core.FourierTransformInformation fourierTransformInformation, 
   Leadtools.Imageprocessing.Core.FourierTransformDisplayCommandFlags flags 
)

Public Function New( _ 
   ByVal fourierTransformInformation As Leadtools.Imageprocessing.Core.FourierTransformInformation, _ 
   ByVal flags As Leadtools.Imageprocessing.Core.FourierTransformDisplayCommandFlags _ 
)

public FourierTransformDisplayCommand(  
   Leadtools.Imageprocessing.Core.FourierTransformInformation fourierTransformInformation, 
   Leadtools.Imageprocessing.Core.FourierTransformDisplayCommandFlags flags 
)

- (instancetype)initWithInformation:(null_unspecified LTFourierTransformInformation *)information 
                              flags:(LTFourierTransformDisplayCommandFlags)flags

function FourierTransformDisplayCommand(  
   fourierTransformInformation , 
   flags  
)

public: 
FourierTransformDisplayCommand(  
   Leadtools.Imageprocessing.Core.FourierTransformInformation^ fourierTransformInformation, 
   Leadtools.Imageprocessing.Core.FourierTransformDisplayCommandFlags flags 
)

Parameters

fourierTransformInformation
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.

flags
Flags that indicate the data to be shown and the plotting scale. You can use a bit-wise OR ( ¦ ) to specify one flag from each group.

Example

Runs the FourierTransformDisplayCommand on an image, applies the Discrete Fourier Transform command to it, and displays the data.

WinRT C#

Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Core 
 
    
Public Sub FourierTransformDisplayConstructorExample() 
   Dim codecs As New RasterCodecs() 
   codecs.ThrowExceptionsOnInvalidImages = True 
   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "ImageProcessingDemo\\FourierTransform.jpg")) 
 
   ' Prepare the command 
   Dim ftArray As FourierTransformInformation 
   ftArray = New FourierTransformInformation(leadImage) 
   Dim rcRange As LeadRect 
   rcRange = New LeadRect(0, 0, leadImage.Width - 1, leadImage.Height - 1) 
   Dim dftCommand As DiscreteFourierTransformCommand 
   dftCommand = New DiscreteFourierTransformCommand 
   dftCommand.FourierTransformInformation = ftArray 
   dftCommand.Range = rcRange 
   dftCommand.Flags = DiscreteFourierTransformCommandFlags.DiscreteFourierTransform Or _ 
      DiscreteFourierTransformCommandFlags.Gray Or _ 
      DiscreteFourierTransformCommandFlags.Range Or _ 
      DiscreteFourierTransformCommandFlags.InsideX Or _ 
      DiscreteFourierTransformCommandFlags.InsideY 
   ' apply DFT 
   dftCommand.Run(leadImage) 
 
   Dim command As FourierTransformDisplayCommand 
   command = New FourierTransformDisplayCommand(ftArray, FourierTransformDisplayCommandFlags.Log Or FourierTransformDisplayCommandFlags.Magnitude) 
   'plot frequency magnitude. 
   command.Run(leadImage) 
 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" 
End Class

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
 
       
public void FourierTransformDisplayConstructorExample() 
{ 
   // 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(); 
 
   dftCommand.FourierTransformInformation = ftArray; 
   dftCommand.Range = rcRange; 
   dftCommand.Flags = DiscreteFourierTransformCommandFlags.DiscreteFourierTransform |  
      DiscreteFourierTransformCommandFlags.Gray    |  
      DiscreteFourierTransformCommandFlags.Range   |  
      DiscreteFourierTransformCommandFlags.InsideX |  
      DiscreteFourierTransformCommandFlags.InsideY;  
   // apply DFT 
   dftCommand.Run(image); 
 
   FourierTransformDisplayCommand command = new FourierTransformDisplayCommand(ftArray, FourierTransformDisplayCommandFlags.Log |   FourierTransformDisplayCommandFlags.Magnitude); 
   //plot frequency magnitude. 
   command.Run(image); 
 
} 
 
static class LEAD_VARS 
{ 
public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; 
}

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
 
       
public async Task FourierTransformDisplayConstructorExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
   // Load the image 
   string srcFileName = @"Assets\Image1.cmp"; 
   StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName); 
   RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile)); 
 
   // Prepare the command 
   FourierTransformInformation ftArray = new FourierTransformInformation(image); 
   LeadRect rcRange = LeadRectHelper.Create(0, 0, image.Width - 1, image.Height - 1); 
   DiscreteFourierTransformCommand dftCommand = new DiscreteFourierTransformCommand(); 
 
   dftCommand.FourierTransformInformation = ftArray; 
   dftCommand.Range = rcRange; 
   dftCommand.Flags = DiscreteFourierTransformCommandFlags.DiscreteFourierTransform |  
      DiscreteFourierTransformCommandFlags.Gray    |  
      DiscreteFourierTransformCommandFlags.Range   |  
      DiscreteFourierTransformCommandFlags.InsideX |  
      DiscreteFourierTransformCommandFlags.InsideY;  
   // apply DFT 
   dftCommand.Run(image); 
 
   FourierTransformDisplayCommand command = new FourierTransformDisplayCommand(ftArray, FourierTransformDisplayCommandFlags.Log |   FourierTransformDisplayCommandFlags.Magnitude); 
   //plot frequency magnitude. 
   command.Run(image); 
 
}