BGRToY_JPEG

Converts a BGR image to gray scale.

Syntax

IppStatus ippiBGRToY_JPEG_8u_C3C1R(const Ipp8u* pSrcBGR, int srcStep, Ipp8u* pDstY, int dstStep, IppiSize roiSize);

pSrcBGR	Pointer to the source image ROI.
srcStep	Distance in bytes between starts of consecutive lines in the source image.
pDstY	Pointer to the destination image ROI.
dstStep	Distance in bytes between starts of consecutive lines in the destination image.
roiSize	Size of the source and destination ROI in pixels.

The function ippiBGRToY_JPEG is declared in the ippj.h file. It operates with ROI (see Regions of Interest in Intel IPP).

This function converts a BGR image to gray scale using the following formula:

Y = 0.299*R + 0.587*G + 0.114*B

ippStsNoErr	Indicates no error.
ippStsNullPtrErr	Indicates an error condition if 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 srcStep or dstStep has a zero or negative value.