FFT Method

Syntax

CWIMAQVision.FFT SourceImage, DestImage

Return Type

Long

On success, this method returns 0. On failure, this method returns a negative number.

Purpose

Computes the Fourier transform of an image.

Remarks

SourceImage type must be U8, I16, SGL, or Complex. DestImage type must be Complex.

The image can be any size, but the method works faster if the image dimensions are in powers of 2. The source image and destination image must be different to perform this operation.

This function is optimized for MMX.

Parameters

SourceImage As CWIMAQImage

The source image.

DestImage As CWIMAQImage

The complex image containing the resulting FFT image.

Example

Dim i As New CWIMAQImage

' Make i a complex image.
i.Type = cwimaqImageTypeComplex

' Perform an FFT on the image in Viewer1 and
' store the resulting complex image in i.
CWIMAQVision1.FFT CWIMAQViewer1.Image, i

See Also

InverseFFT