Initializes a new
Leadtools.ImageProcessing.Core.FourierTransformDisplayCommand class object with explicit parameters.
Syntax
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 Leadtools.ImageProcessing.Core.FourierTransformDisplayCommand on an image, applies the Discrete Fourier Transform command to it, and displays the data.
Visual Basic | Copy Code |
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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 |
C# | Copy Code |
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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";
} |
SilverlightCSharp | Copy Code |
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SilverlightVB | Copy Code |
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Requirements
Target Platforms: Silverlight 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7, MAC OS/X (Intel Only)
See Also