RGBToYUV

RGB to YUV color conversion. More...

Functions
NppStatus	nppiRGBToYUV_8u_C3R (const Npp8u *pSrc, int nSrcStep, Npp8u *pDst, int nDstStep, NppiSize oSizeROI)
	3 channel 8-bit unsigned packed RGB to 3 channel 8-bit unsigned packed YUV color conversion. More...
NppStatus	nppiRGBToYUV_8u_AC4R (const Npp8u *pSrc, int nSrcStep, Npp8u *pDst, int nDstStep, NppiSize oSizeROI)
	4 channel 8-bit unsigned packed RGB with alpha to 4 channel 8-bit unsigned packed YUV color conversion with alpha, not affecting alpha. More...
NppStatus	nppiRGBToYUV_8u_P3R (const Npp8u *const pSrc[3], int nSrcStep, Npp8u *pDst[3], int nDstStep, NppiSize oSizeROI)
	3 channel 8-bit unsigned planar RGB to 3 channel 8-bit unsigned planar YUV color conversion. More...
NppStatus	nppiRGBToYUV_8u_C3P3R (const Npp8u *pSrc, int nSrcStep, Npp8u *pDst[3], int nDstStep, NppiSize oSizeROI)
	3 channel 8-bit unsigned packed RGB to 3 channel 8-bit unsigned planar YUV color conversion. More...
NppStatus	nppiRGBToYUV_8u_AC4P4R (const Npp8u *pSrc, int nSrcStep, Npp8u *pDst[4], int nDstStep, NppiSize oSizeROI)
	4 channel 8-bit unsigned packed RGB with alpha to 4 channel 8-bit unsigned planar YUV color conversion with alpha. More...

Detailed Description

RGB to YUV color conversion.

Here is how NPP converts gamma corrected RGB or BGR to YUV. For digital RGB values in the range [0..255], Y has the range [0..255], U varies in the range [-112..+112], and V in the range [-157..+157]. To fit in the range of [0..255], a constant value of 128 is added to computed U and V values, and V is then saturated.

*  Npp32f nY =  0.299F * R + 0.587F * G + 0.114F * B; 
*  Npp32f nU = (0.492F * ((Npp32f)nB - nY)) + 128.0F;
*  Npp32f nV = (0.877F * ((Npp32f)nR - nY)) + 128.0F;
*  if (nV > 255.0F) 
*      nV = 255.0F;
*  

Function Documentation

NppStatus nppiRGBToYUV_8u_AC4P4R	(	const Npp8u *	pSrc,
		int	nSrcStep,
		Npp8u *	pDst[4],
		int	nDstStep,
		NppiSize	oSizeROI
	)

4 channel 8-bit unsigned packed RGB with alpha to 4 channel 8-bit unsigned planar YUV color conversion with alpha.

images.

Parameters

pSrc	Source-Image Pointer.
nSrcStep	Source-Image Line Step.
pDst	Destination-Planar-Image Pointer Array.
nDstStep	Destination-Image Line Step.
oSizeROI	Region-of-Interest (ROI).

Returns

Image Data Related Error Codes, ROI Related Error Codes

NppStatus nppiRGBToYUV_8u_AC4R	(	const Npp8u *	pSrc,
		int	nSrcStep,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI
	)

4 channel 8-bit unsigned packed RGB with alpha to 4 channel 8-bit unsigned packed YUV color conversion with alpha, not affecting alpha.

images.

Parameters

pSrc	Source-Image Pointer.
nSrcStep	Source-Image Line Step.
pDst	Destination-Image Pointer.
nDstStep	Destination-Image Line Step.
oSizeROI	Region-of-Interest (ROI).

Returns

Image Data Related Error Codes, ROI Related Error Codes

NppStatus nppiRGBToYUV_8u_C3P3R	(	const Npp8u *	pSrc,
		int	nSrcStep,
		Npp8u *	pDst[3],
		int	nDstStep,
		NppiSize	oSizeROI
	)

3 channel 8-bit unsigned packed RGB to 3 channel 8-bit unsigned planar YUV color conversion.

Parameters

pSrc	Source-Image Pointer.
nSrcStep	Source-Image Line Step.
pDst	Destination-Planar-Image Pointer Array.
nDstStep	Destination-Image Line Step.
oSizeROI	Region-of-Interest (ROI).

Returns

Image Data Related Error Codes, ROI Related Error Codes

NppStatus nppiRGBToYUV_8u_C3R	(	const Npp8u *	pSrc,
		int	nSrcStep,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI
	)

3 channel 8-bit unsigned packed RGB to 3 channel 8-bit unsigned packed YUV color conversion.

Parameters

pSrc	Source-Image Pointer.
nSrcStep	Source-Image Line Step.
pDst	Destination-Image Pointer.
nDstStep	Destination-Image Line Step.
oSizeROI	Region-of-Interest (ROI).

Returns

Image Data Related Error Codes, ROI Related Error Codes

NppStatus nppiRGBToYUV_8u_P3R	(	const Npp8u *const	pSrc[3],
		int	nSrcStep,
		Npp8u *	pDst[3],
		int	nDstStep,
		NppiSize	oSizeROI
	)

3 channel 8-bit unsigned planar RGB to 3 channel 8-bit unsigned planar YUV color conversion.

Parameters

pSrc	Source-Planar-Image Pointer Array.
nSrcStep	Source-Image Line Step.
pDst	Destination-Planar-Image Pointer Array.
nDstStep	Destination-Image Line Step.
oSizeROI	Region-of-Interest (ROI).

Returns

Image Data Related Error Codes, ROI Related Error Codes