Intel® Integrated Performance Primitives (Intel® IPP) Developer Guide and Reference
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DemosaicAHD
Restores the RGB image from the gray-scale CFA image using AHD algorithm.
Syntax
IppStatus ippiDemosaicAHD_8u_C1C3R(const Ipp8u* pSrc, IppiRect srcRoi, IppiSize srcSize, int srcStep, Ipp8u* pDst, int dstStep, IppiBayerGrid grid, Ipp8u* pTmp, int tmpStep);
IppStatus ippiDemosaicAHD_16u_C1C3R(const Ipp16u* pSrc, IppiRect srcRoi, IppiSize srcSize, int srcStep, Ipp16u* pDst, int dstStep, IppiBayerGrid grid, Ipp16u* pTmp, int tmpStep);
Include Files
ippcc.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. | 
| srcRoi | Region of interest in the source image (of the IppiRect type). | 
| srcSize | Size of the source image. | 
| srcStep | Distance in bytes between starts of consecutive lines in the source image. | 
| pDst | Pointer to the destination image. | 
| dstStep | Distance in bytes between starts of consecutive lines in the destination image. | 
| grid | Specifies the configuration of the Bayer grid in the source image. The following values are possible (see Figure Possible Configurations of the Bayer Grids): ippiBayerBGGR ippiBayerRGGB ippiBayerGBRG ippiBayerGRBG | 
| pTmp | Pointer to the temporary image of (srcRoi.width + 6, 30) size. | 
| tmpStep | Distance in bytes between starts of consecutive lines in the temporary image. | 
Description
This function operates with ROI (see Regions of Interest in Intel IPP).
This function transforms the one-channel gray-scale image pSrc that is produced by applying the color filter array (CFA) to 24-bit three-channel RGB image using the adaptive homogeneity-directed demosaicing (AHD) algorithm [Hir05]. The algorithm requires the temporary image pTmp of size srcRoi.width +6.30.
The type of the Bayer grid (see Figure Possible Configurations of the Bayer Grids) is specified by the parameter grid.
Return Values
| ippStsNoErr | Indicates no error. Any other value indicates an error. | 
| ippStsNullPtrErr | Indicates an error condition if one of the specified pointer is NULL. | 
| ippStsSizeErr | Indicates an error condition if the srcSize has a field that is less than 5, or if the roiSize has a field with negative or zero value. | 
| ippStsBadArgErr | Indicates an error condition if grid has an illegal value. |