This function performs a forward Fast Fourier Transform.
Declaration:
 Copy Code |
|
|---|---|
AT_ERRCOUNT ACCUAPI IG_FIP_FFT_forward_from_image(
HIGEAR hIGear,
LPHIGCOMPLEXOBJ lphIGComplexObj,
enumIGFFTScalingMethods nScalingMethod,
AT_BOOL bCenterTransform
);
|
|
Arguments:
| Name | Type | Description |
| hIGear | HIGEAR | Handle of the image to be processed. |
| lphIGComplexObj | 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:
Grayscale - 8, 16, 32 bpp.
Sample:
FreqIP
Example:
| Copy Code |
|
|---|---|
HIGEAR hIGear; /* Handle of input image */ HIGCOMPLEXOBJ hIGComplexObjOut; /* Handle of output data */ ... IG_FIP_FFT_forward_from_image(hIGear, &hIGComplexObjOut, IG_FFT_SCALING_SQRTN, TRUE); ... |
|
Remarks:
The difference between this function and IG_FIP_FFT_forward() is that this function takes a HIGEAR as the input.