IG_FIP_FFT_inverse

This function performs an inverse Fast Fourier Transform.

Declaration:

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AT_ERRCOUNT ACCUAPI IG_FIP_FFT_inverse ( HIGCOMPLEXOBJ hIGComplexObj, LPHIGCOMPLEXOBJ lphIGComplexObjOut, enumIGFFTScalingMethods nScalingMethod, AT_BOOL bCenterTransform );

Arguments:

Name	Type	Description
hIGComplexObj	HIGCOMPLEXOBJ	Handle of the input data.
lphIGComplexObjOut	LPHIGCOMPLEXOBJ	Handle of the result data.
nScalingMethod	enumIGFFTScalingMethods	Specifies the method of scaling the result data.
bCenterTransform	AT_BOOL	Flag to indicate whether to center the transform.

Return Value:

Returns the number of ImageGear errors that occurred during this function call.

Supported Raster Image Formats:

All pixel formats supported by HIGCOMPLEXOBJ object. See IG_FIP_co_obj_create.

Sample:

FreqIP

Example:

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HIGCOMPLEXOBJ hIGComplexObj; /* Handle of input data / HIGCOMPLEXOBJ hIGComplexObjOut; / Handle of result data */ ... IG_FIP_FFT_inverse(hIGComplexObj, &hIGComplexObjOut, IG_FFT_SCALING_SQRTN, TRUE); ...

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HIGCOMPLEXOBJ hIGComplexObj;     /* Handle of input data */
HIGCOMPLEXOBJ hIGComplexObjOut; /* Handle of result data */
...
IG_FIP_FFT_inverse(hIGComplexObj, &hIGComplexObjOut, IG_FFT_SCALING_SQRTN, TRUE);
...