IG_FIP_FFT_inverse_to_image
This function performs an inverse Fast Fourier Transform.
Declaration:
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AT_ERRCOUNT ACCUAPI IG_FIP_FFT_inverse_to_image(
HIGCOMPLEXOBJ hIGComplexObj,
LPHIGEAR lphIGear,
enumIGFFTScalingMethods nScalingMethod,
AT_BOOL bCenterTransform
);
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Arguments:
Name |
Type |
Description |
hIGComplexObj |
HIGCOMPLEXOBJ |
Handle of the input data. |
lphIGear |
LPHIGEAR |
Handle of the result image. |
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.
Pixel format of the output image is Grayscale – 8 or 16 bpp.
Sample:
FreqIP
Example:
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HIGCOMPLEXOBJ hIGComplexObj; /* Handle of input data */
HIGEAR hIGear; /* Handle of output image */
...
IG_FIP_FFT_inverse_to_image(hIGComplexObj, &hIGear, IG_FFT_SCALING_SQRTN, TRUE);
...
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Remarks:
The difference between this function and IG_FIP_FFT_inverse() is that this function returns a HIGEAR as the result, using the default conversion type IG_FIPDATA_CONV_TYPE_REAL.