public FastFourierTransformCommand()
Public Function New()
public FastFourierTransformCommand()
public:
FastFourierTransformCommand();
Run the FastFourierTransformCommand on an image to apply a FFT transformation.
using Leadtools;
using Leadtools.ImageProcessing;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Core;
public void FastFourierTransformConstructorExample()
{
// 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
// 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);
Complex[] data = ftArray.Data;
int width = ftArray.Width;
int height = ftArray.Height;
// Apply FFT.
FastFourierTransformCommand command = new FastFourierTransformCommand();
command.FourierTransformInformation = ftArray;
command.Flags = FastFourierTransformCommandFlags.FastFourierTransform | FastFourierTransformCommandFlags.Gray;
command.Run(image);
LeadRect rcRect = new LeadRect(0, 0, image.Width / 2, image.Height / 2);
FrequencyFilterCommand freqCommand = new FrequencyFilterCommand(ftArray, rcRect, FrequencyFilterCommandFlags.InsideX | FrequencyFilterCommandFlags.OutsideY);
FastFourierTransformCommand invCommand = new FastFourierTransformCommand(ftArray, FastFourierTransformCommandFlags.InverseFastFourierTransform | FastFourierTransformCommandFlags.Gray | FastFourierTransformCommandFlags.Scale |
FastFourierTransformCommandFlags.Both);
invCommand.Run(image);
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}
Imports Leadtools
Imports Leadtools.ImageProcessing
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing.Core
Public Sub FastFourierTransformConstructorExample()
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
' 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
ftArray = New FourierTransformInformation(leadImage)
Dim data() As Complex
data = ftArray.Data
Dim width As Integer = ftArray.Width
Dim height As Integer = ftArray.Height
' Apply FFT.
Dim command As FastFourierTransformCommand
command = New FastFourierTransformCommand
command.FourierTransformInformation = ftArray
command.Flags = FastFourierTransformCommandFlags.FastFourierTransform Or FastFourierTransformCommandFlags.Gray
command.Run(leadImage)
Dim rcRect As LeadRect
rcRect = New LeadRect(0, 0, CType((leadImage.Width / 2), Integer), CType((leadImage.Height / 2), Integer))
Dim freqCommand As FrequencyFilterCommand
freqCommand = New FrequencyFilterCommand(ftArray, rcRect, FrequencyFilterCommandFlags.InsideX Or FrequencyFilterCommandFlags.OutsideY)
Dim invCommand As FastFourierTransformCommand
invCommand = New FastFourierTransformCommand(ftArray,
FastFourierTransformCommandFlags.InverseFastFourierTransform Or
FastFourierTransformCommandFlags.Gray Or
FastFourierTransformCommandFlags.Scale Or
FastFourierTransformCommandFlags.Both)
invCommand.Run(leadImage)
End Sub
Public NotInheritable Class LEAD_VARS
Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class
Help Collections
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