Evaluates 16 partial sums of absolute differences between current and reference 16X16 blocks.
Syntax
IppStatus ippiSAD16x16Blocks4x4_8u16u(const Ipp8u* pSrc, Ipp32s srcStep, Ipp8u* pRef, Ipp32s refStep, Ipp16u* pDstSAD, Ipp32s mcType);
Parameters
pSrc |
Pointer to a 16x16 block in the source plane. |
srcStep |
Distance in bytes between starts of the consecutive lines in the source image. |
pRef |
Pointer to a 16x16 block in the reference plane. |
refStep |
Distance in bytes between starts of the consecutive lines in the reference image. |
pDstSAD |
Pointer to an array of size 16 to store the SAD values. |
mcType |
Reserved and must be 0. |
Description
This function is declared in the ippvc.h header file.
The function ippiSAD16x16Blocks4x4_8u16u evaluates 16 partial sums (for each 4x4 block in the order shown in Figure "Splitting of 16x16 Block Into 4x4 Blocks") of absolute differences between all the elements in the current 16x16 block and the corresponding elements in the reference 16x16 block. The result is stored in pDstSAD.
Return Values
ippStsNoErr |
Indicates no error. |
ippStsNullPtrErr |
Indicates an error when at least one input pointer is NULL. |