FourierTransformDisplayCommand Constructor(FourierTransformInformation,FourierTransformDisplayCommandFlags)

C#
Visual Basic
WinRT C#
Objective-C
Java
WinRT JavaScript
C++

public FourierTransformDisplayCommand( 
   FourierTransformInformation fourierTransformInformation,
   FourierTransformDisplayCommandFlags flags
)

'Declaration
 
Public Function New( _
   ByVal fourierTransformInformation As FourierTransformInformation, _
   ByVal flags As FourierTransformDisplayCommandFlags _
)

'Usage
 
Dim fourierTransformInformation As FourierTransformInformation
Dim flags As FourierTransformDisplayCommandFlags
 
Dim instance As New FourierTransformDisplayCommand(fourierTransformInformation, flags)

public FourierTransformDisplayCommand( 
   FourierTransformInformation fourierTransformInformation,
   FourierTransformDisplayCommandFlags flags
)

function FourierTransformDisplayCommand( 
   fourierTransformInformation ,
   flags 
)

public:
FourierTransformDisplayCommand( 
   FourierTransformInformation^ fourierTransformInformation,
   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.

C#
Visual Basic
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

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, "Master.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, "Master.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";
}

function FourierTransformDisplayConstructorExample()
{
   var codecs = new Leadtools.Codecs.RasterCodecs();
   codecs.throwExceptionsOnInvalidImages = true;

   // Load the image
   var srcFileName = "Assets\\Image1.cmp";
   return Tools.AppInstallFolder().getFileAsync(srcFileName).then(function (loadFile) {
      return codecs.loadAsync(Leadtools.LeadStreamFactory.create(loadFile));
   }).then(function (image) {
      // Prepare the command
      with (Leadtools.ImageProcessing.Core) {
         var ftArray = new FourierTransformInformation(image);
         var rcRange = Leadtools.LeadRectHelper.create(0, 0, image.width - 1, image.height - 1);
         var 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);
         
         var command = new FourierTransformDisplayCommand(ftArray, FourierTransformDisplayCommandFlags.log | FourierTransformDisplayCommandFlags.magnitude);
         //plot frequency magnitude.
         command.run(image);
      }
   });
}

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);

}

Target Platforms

Reference

FourierTransformDisplayCommand Class
FourierTransformDisplayCommand Members
Overload List