FourierTransformDisplayCommand Constructor(FourierTransformInformation,FourierTransformDisplayCommandFlags)

Initializes a new FourierTransformDisplayCommand class object with explicit parameters.

Syntax

Visual Basic
C#
WinRT C#
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.

Example

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

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

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);
      }
   });
}

[TestMethod]
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);

}

Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

FourierTransformDisplayCommand Class
FourierTransformDisplayCommand Members
Overload List