TiltedIntegral
Transforms an image to the tilted integral representation.
Syntax
IppStatus ippiTiltedIntegral_8u32f_C1R(const Ipp8u*
pSrc
, int
srcStep
, Ipp32f*
pDst
, int
dstStep
, IppiSize
roiSize
, Ipp32f
val
);
IppStatus ippiTiltedIntegral_8u32s_C1R(const Ipp8u*
pSrc
, int
srcStep
, Ipp32s*
pDst
, int
dstStep
, IppiSize
roiSize
, Ipp32s
val
);
Include Files
ippcv.h
Domain Dependencies
Headers:
ippcore.h
,
ippvm.h
,
ipps.h
,
ippi.h
Libraries:
ippcore.lib
,
ippvm.lib
,
ipps.lib
,
ippi.lib
Parameters
- pSrc
- Pointer to the source image ROI.
- srcStep
- Distance in bytes between starts of consecutive lines in the source image.
- pDst
- Pointer to the ROI in the destination integral image.
- dstStep
- Distance in bytes between starts of consecutive lines in the destination image.
- roiSize
- Size of source image ROI in pixels.
- val
- The value to add to pDst image pixels
Description
This function operates with ROI (see Regions of Interest in Intel IPP). This function transforms a source image 
pSrc
to the tilted integral image pDst
. Pixel values of the destination image pDst
are computed using pixel values of the source image pSrc
and the specified value val
in accordance with the following formula:
where
i
,j
are coordinates of the destination image pixels (see Figure “Operation of the Integral and TiltedIntegral functions”
)varying in the range i
= 2 ,..., roiSize.height
+ 1, j
= 0,..., roiSize.width
+ 1. Pixel values of rows 0 and 1 of the destination image pDst
( i
=0) is set to val
.The size of the destination images is (
roiSize.width
+ 2) x (roiSize.height
+ 2).Figure
“Operation of the Integral and TiltedIntegral functions”
shows what pixels (red circles) of the source image are used in computation new pixel values in the i
,j
coordinates.Return Values
- ippStsNoEr
- Indicates no error.
- ippStsNullPtrErr
- Indicates an error ifpSrcorpDstisNULL.
- ippStsSizeErr
- Indicates an error condition ifroiSizehas a field with zero or negative value.
- ippStsStepErr
- Indicates an error condition ifsrcStepis less thanroiSize.width*<pixelSize>, ordstStepis less than(roiSize.width+2)*<pixelSize>.
- ippStsNotEvenStepErr
- Indicates an error condition if onedstStepis not divisible by 4.