Filters an image using a vertical Sobel kernel.
IppStatus ippiFilterSobelVert_<mod>(const Ipp<datatype>* pSrc, int srcStep, Ipp<datatype>* pDst, int dstStep, IppiSize dstRoiSize);
Supported values for mod:
8u_C1R | 16s_C1R | 32f_C1R |
8u_C3R | 16s_C3R | 32f_C3R |
8u_C4R | 16s_C4R | 32f_C4R |
8u_AC4R | 16s_AC4R | 32f_AC4R |
IppStatus ippiFilterSobelVert_<mod>(const Ipp<srcDatatype>* pSrc, int srcStep, Ipp<dstDatatype>* pDst, int dstStep, IppiSize dstRoiSize, IppiMaskSize mask);
Supported values for mod:
8u16s_C1R | 8s16s_C1R |
IppStatus ippiFilterSobelVertMask_32f_C1R(const Ipp32f* pSrc, int srcStep, Ipp32f* pDst, int dstStep, IppiSize dstRoiSize, IppiMaskSize mask);
pSrc |
Pointer to the source image ROI. |
srcStep |
Distance in bytes between starts of consecutive lines in the source image. |
pDst |
Pointer to the destination image ROI. |
dstStep |
Distance in bytes between starts of consecutive lines in the destination image. |
dstRoiSize |
Size of the source and destination ROI in pixels. |
mask |
Predefined mask of IppiMaskSize type. |
The functions ippiFilterSobelVert and ippiFilterSobelVertMask are declared in the ippi.h file. It operates with ROI (see Regions of Interest in Intel IPP). These functions apply a verticall Sobel operator to an image ROI. The appropriate kernel is the matrix of 3x3 size, or either 3x3 or 5x5 size in accordance with the mask parameter of the corresponding function flavors. The kernels have the following values:
-1 -2 0 2 1
-1 0 1 -4 -8 0 8 4
-2 0 2 or -6 -12 0 12 6
-1 0 1 -4 -8 0 8 4
-1 -2 0 2 1
The anchor cell is the center cell of the kernel (red). The size of the source image ROI is equal to dstRoiSize, the size of the destination image ROI.
This filter has the effect of both enhancing and smoothing vertical edges of an image. To ensure valid operation when image boundary pixels are processed, the application should correctly define additional border pixels (see Borders).
ippStsNoErr |
Indicates no error. Any other value indicates an error or a warning. |
ippStsNullPtrErr |
Indicates an error condition if pSrc or pDst is NULL. |
ippStsSizeErr |
Indicates an error condition if dstRoiSize has a field with a zero or negative value. |
ippStsStepErr |
Indicates an error condition if srcStep or dstStep has a zero or negative value. |
ippStsMaskSizeErr |
Indicates an error condition if mask has an illegal value. |
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