This function computes the forward Discrete Cosine Transform (DCT) of the input image.
Declaration:
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AT_ERRCOUNT ACCUAPI IG_FIP_DCT_forward_from_image(
HIGEAR hIGear,
LPHIGCOMPLEXOBJ lphIGComplexObj
);
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Arguments:
| Name | Type | Description |
| hIGear | HIGEAR | HIGEAR handle of image to be processed. |
| lphIGComplexObj | LPHIGCOMPLEXOBJ | HIGCOMPLEXOBJ handle of result data. |
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:
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HIGEAR hIGear; /* HIGEAR handle of input image */ HIGCOMPLEXOBJ hIGComplexObjOut; /* HIGCOMPLEXOBJ handle of output data */ ... IG_FIP_DCT_forward_from_image(hIGear, &hIGComplexObjOut); ... |
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Remarks:
The difference between this function and IG_FIP_DCT_forward() is that this function takes a HIGEAR as the input.