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FrequencyFilterCommand Constructor
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Leadtools.ImageProcessing.Core Namespace > FrequencyFilterCommand Class : FrequencyFilterCommand Constructor




Initializes a new FrequencyFilterCommand class object with default parameters.

Overload List

OverloadDescription
FrequencyFilterCommand Constructor() Initializes a new FrequencyFilterCommand class object with default parameters.  
FrequencyFilterCommand Constructor(FourierTransformInformation,Rectangle,FrequencyFilterCommandFlags) Initializes a new FrequencyFilterCommand class object with explicit parameters.  

Example

Visual BasicCopy Code
ImageProcessing.Core.FrequencyFilterCommand.FrequencyFilterConstructor
   Public Sub FrequencyFilterConstructorExample()
      RasterCodecs.Startup()
      Dim codecs As New RasterCodecs()
      codecs.ThrowExceptionsOnInvalidImages = True

      Dim leadImage As RasterImage = codecs.Load("C:\Program Files\LEAD Technologies\LEADTOOLS 15\Images\Master.jpg")

      ' Prepare the command
      ' Resize the image to make sure the image's dimensions are power of two.
      Dim sizeCmd As SizeCommand = New SizeCommand(256, 256, RasterSizeFlags.Bicubic)
      sizeCmd.Run(leadImage)

      Dim FTArray As FourierTransformInformation = New FourierTransformInformation(leadImage)
      ' Apply FFT.
      Dim command As FastFourierTransformCommand = New FastFourierTransformCommand(FTArray, FastFourierTransformCommandFlags.FastFourierTransform Or FastFourierTransformCommandFlags.Gray)
      command.Run(leadImage)

      Dim rcRect As Rectangle = New Rectangle(0, 0, leadImage.Width \ 2, leadImage.Height \ 2)
      Dim FreqCommand As FrequencyFilterCommand = New FrequencyFilterCommand
      FreqCommand.Flags = FrequencyFilterCommandFlags.InsideX Or FrequencyFilterCommandFlags.OutsideY
      FreqCommand.FourierTransformInformation = FTArray
      FreqCommand.Rectangle = rcRect

      Dim InvCommand As FastFourierTransformCommand = New FastFourierTransformCommand(FTArray, FastFourierTransformCommandFlags.InverseFastFourierTransform Or FastFourierTransformCommandFlags.Gray Or FastFourierTransformCommandFlags.Scale Or FastFourierTransformCommandFlags.Both)
      InvCommand.Run(leadImage)

      RasterCodecs.Shutdown()
   End Sub
C#Copy Code
ImageProcessing.Core.FrequencyFilterCommand.FrequencyFilterConstructor 
      public void FrequencyFilterConstructorExample() 
      { 
         // Load an image 
         RasterCodecs.Startup(); 
         RasterCodecs codecs = new RasterCodecs(); 
         codecs.ThrowExceptionsOnInvalidImages = true; 
 
         RasterImage image = codecs.Load(@"C:\Program Files\LEAD Technologies\LEADTOOLS 15\Images\Master.jpg"); 
 
         // Prepare the command 
         // Resize the image to make sure the image's dimensions are power of two. 
         SizeCommand sizeCommand = new SizeCommand(256, 256, RasterSizeFlags.Bicubic);            
         sizeCommand.Run(image); 
 
         FourierTransformInformation ftArray = new FourierTransformInformation(image); 
         // Apply FFT. 
         FastFourierTransformCommand command = new FastFourierTransformCommand(ftArray, FastFourierTransformCommandFlags.FastFourierTransform |  FastFourierTransformCommandFlags.Gray);    
         command.Run(image); 
 
         Rectangle rcRect = new Rectangle(0, 0, image.Width / 2, image.Height / 2); 
         FrequencyFilterCommand freqCommand = new FrequencyFilterCommand(); 
         freqCommand.Flags = FrequencyFilterCommandFlags.InsideX | FrequencyFilterCommandFlags.InsideY; 
         freqCommand.FourierTransformInformation = ftArray; 
         freqCommand.Rectangle = rcRect; 
 
         FastFourierTransformCommand invCommand = new FastFourierTransformCommand(ftArray, FastFourierTransformCommandFlags.InverseFastFourierTransform | FastFourierTransformCommandFlags.Gray | FastFourierTransformCommandFlags.Scale | FastFourierTransformCommandFlags.Both); 
         invCommand.Run(image); 
 
         RasterCodecs.Shutdown(); 
      }

Requirements

Target Platforms: Microsoft .NET Framework 2.0, Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

See Also