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);

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

The function ippiDemosaicAHD is declared in the ippcc.h file. It 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.