Performs inverse reversible component transformation.
Syntax
Case 1: Operation on planar data
IppStatus ippiRCTInv_JPEG2K_32s_P3C3R(const Ipp32s* pSrc[3], int srcStep, Ipp32s* pDst, int dstStep, IppiSize roiSize);
Case 2: In-place operation on planar data
IppStatus ippiRCTInv_JPEG2K_32s_P3IR(Ipp32s* pSrcDst[3], int srcDstStep, IppiSize roiSize);
Parameters
pSrc |
Pointer to the array of pointers to the ROIs in the planes of the source image. |
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. |
pSrcDst |
Pointer to the array of pointers to ROIs in the planes of the source and destination image for the in-place operation. |
dstSrcStep |
Distance in bytes between starts of consecutive lines in the source and destination image buffer for the in-place operation. |
roiSize |
Size of the source and destination ROI in pixels. |
Description
The function ippiRCTFwd_JPEG2K is declared in the ippj.h file. It operates with ROI (see Regions of Interest in Intel IPP).
This function performs inverse RCT of the image buffer pSrc after
inverse wavelet transformation. The inverse RCT is applied to transformed
image component samples Y0,
Y1, Y2 and produces the corresponding
samples I0,
I1, I2 in accordance with the following
formulas:
where the notation 
designates
the floor function, that is, the largest integer not exceeding
x.
Return Values
ippStsNoErr |
Indicates no error. |
ippStsNullPtrErr |
Indicates an error when any of the specified pointers is NULL. |
ippStsSizeErr |
Indicates an error condition if roiSize has a field with zero or negative value. |
ippStsStepErr |
Indicates an error condition if any of the specified buffer step values is zero or negative. |