Performs 2:1 horizontal sampling and 2:1 vertical sampling of an image.
IppStatus ippiSampleDownH2V2_JPEG_8u_C1R(const Ipp8u* pSrc, int srcStep, IppiSize srcSize, Ipp8u* pDst, int dstStep, IppiSize dstSize);
pSrc |
Pointer to the source image ROI. |
srcStep |
Distance in bytes between starts of consecutive lines in the source image. |
srcSize |
Size of the source ROI in pixels. |
pDst |
Pointer to the destination image ROI. |
dstStep |
Distance in bytes between starts of consecutive lines in the destination image. |
dstSize |
Size of the destination ROI in pixels. |
The function ippiSampleDownH2V2_JPEG is declared in the ippj.h file. It operates with ROI (see Regions of Interest in Intel IPP ).
This function performs 2:1 horizontal sampling and 2:1 vertical sampling of an image. Downsampling is performed as a simple “box” filter.
ippStsNoErr |
Indicates no error. |
ippStsNullPtrErr |
Indicates an error condition if one or both of the specified pointers are NULL. |
ippStsSizeErr |
Indicates an error condition if roiSize has a field with zero or negative value. |
ippStsStepErr |
Indicates an error condition if srcStep or dstStep has a zero or negative value. |
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