Compare Images Operations

Compare the pixels of two images and create a binary result image. More...

Functions
NppStatus	nppiCompare_8u_C1R_Ctx (const Npp8u *pSrc1, int nSrc1Step, const Npp8u *pSrc2, int nSrc2Step, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppCmpOp eComparisonOperation, NppStreamContext nppStreamCtx)
	1 channel 8-bit unsigned char image compare. More...
NppStatus	nppiCompare_8u_C1R (const Npp8u *pSrc1, int nSrc1Step, const Npp8u *pSrc2, int nSrc2Step, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppCmpOp eComparisonOperation)
NppStatus	nppiCompare_8u_C3R_Ctx (const Npp8u *pSrc1, int nSrc1Step, const Npp8u *pSrc2, int nSrc2Step, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppCmpOp eComparisonOperation, NppStreamContext nppStreamCtx)
	3 channel 8-bit unsigned char image compare. More...
NppStatus	nppiCompare_8u_C3R (const Npp8u *pSrc1, int nSrc1Step, const Npp8u *pSrc2, int nSrc2Step, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppCmpOp eComparisonOperation)
NppStatus	nppiCompare_8u_C4R_Ctx (const Npp8u *pSrc1, int nSrc1Step, const Npp8u *pSrc2, int nSrc2Step, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppCmpOp eComparisonOperation, NppStreamContext nppStreamCtx)
	4 channel 8-bit unsigned char image compare. More...
NppStatus	nppiCompare_8u_C4R (const Npp8u *pSrc1, int nSrc1Step, const Npp8u *pSrc2, int nSrc2Step, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppCmpOp eComparisonOperation)
NppStatus	nppiCompare_8u_AC4R_Ctx (const Npp8u *pSrc1, int nSrc1Step, const Npp8u *pSrc2, int nSrc2Step, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppCmpOp eComparisonOperation, NppStreamContext nppStreamCtx)
	4 channel 8-bit unsigned char image compare, not affecting Alpha. More...
NppStatus	nppiCompare_8u_AC4R (const Npp8u *pSrc1, int nSrc1Step, const Npp8u *pSrc2, int nSrc2Step, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppCmpOp eComparisonOperation)
NppStatus	nppiCompare_16u_C1R_Ctx (const Npp16u *pSrc1, int nSrc1Step, const Npp16u *pSrc2, int nSrc2Step, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppCmpOp eComparisonOperation, NppStreamContext nppStreamCtx)
	1 channel 16-bit unsigned short image compare. More...
NppStatus	nppiCompare_16u_C1R (const Npp16u *pSrc1, int nSrc1Step, const Npp16u *pSrc2, int nSrc2Step, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppCmpOp eComparisonOperation)
NppStatus	nppiCompare_16u_C3R_Ctx (const Npp16u *pSrc1, int nSrc1Step, const Npp16u *pSrc2, int nSrc2Step, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppCmpOp eComparisonOperation, NppStreamContext nppStreamCtx)
	3 channel 16-bit unsigned short image compare. More...
NppStatus	nppiCompare_16u_C3R (const Npp16u *pSrc1, int nSrc1Step, const Npp16u *pSrc2, int nSrc2Step, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppCmpOp eComparisonOperation)
NppStatus	nppiCompare_16u_C4R_Ctx (const Npp16u *pSrc1, int nSrc1Step, const Npp16u *pSrc2, int nSrc2Step, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppCmpOp eComparisonOperation, NppStreamContext nppStreamCtx)
	4 channel 16-bit unsigned short image compare. More...
NppStatus	nppiCompare_16u_C4R (const Npp16u *pSrc1, int nSrc1Step, const Npp16u *pSrc2, int nSrc2Step, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppCmpOp eComparisonOperation)
NppStatus	nppiCompare_16u_AC4R_Ctx (const Npp16u *pSrc1, int nSrc1Step, const Npp16u *pSrc2, int nSrc2Step, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppCmpOp eComparisonOperation, NppStreamContext nppStreamCtx)
	4 channel 16-bit unsigned short image compare, not affecting Alpha. More...
NppStatus	nppiCompare_16u_AC4R (const Npp16u *pSrc1, int nSrc1Step, const Npp16u *pSrc2, int nSrc2Step, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppCmpOp eComparisonOperation)
NppStatus	nppiCompare_16s_C1R_Ctx (const Npp16s *pSrc1, int nSrc1Step, const Npp16s *pSrc2, int nSrc2Step, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppCmpOp eComparisonOperation, NppStreamContext nppStreamCtx)
	1 channel 16-bit signed short image compare. More...
NppStatus	nppiCompare_16s_C1R (const Npp16s *pSrc1, int nSrc1Step, const Npp16s *pSrc2, int nSrc2Step, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppCmpOp eComparisonOperation)
NppStatus	nppiCompare_16s_C3R_Ctx (const Npp16s *pSrc1, int nSrc1Step, const Npp16s *pSrc2, int nSrc2Step, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppCmpOp eComparisonOperation, NppStreamContext nppStreamCtx)
	3 channel 16-bit signed short image compare. More...
NppStatus	nppiCompare_16s_C3R (const Npp16s *pSrc1, int nSrc1Step, const Npp16s *pSrc2, int nSrc2Step, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppCmpOp eComparisonOperation)
NppStatus	nppiCompare_16s_C4R_Ctx (const Npp16s *pSrc1, int nSrc1Step, const Npp16s *pSrc2, int nSrc2Step, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppCmpOp eComparisonOperation, NppStreamContext nppStreamCtx)
	4 channel 16-bit signed short image compare. More...
NppStatus	nppiCompare_16s_C4R (const Npp16s *pSrc1, int nSrc1Step, const Npp16s *pSrc2, int nSrc2Step, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppCmpOp eComparisonOperation)
NppStatus	nppiCompare_16s_AC4R_Ctx (const Npp16s *pSrc1, int nSrc1Step, const Npp16s *pSrc2, int nSrc2Step, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppCmpOp eComparisonOperation, NppStreamContext nppStreamCtx)
	4 channel 16-bit signed short image compare, not affecting Alpha. More...
NppStatus	nppiCompare_16s_AC4R (const Npp16s *pSrc1, int nSrc1Step, const Npp16s *pSrc2, int nSrc2Step, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppCmpOp eComparisonOperation)
NppStatus	nppiCompare_32f_C1R_Ctx (const Npp32f *pSrc1, int nSrc1Step, const Npp32f *pSrc2, int nSrc2Step, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppCmpOp eComparisonOperation, NppStreamContext nppStreamCtx)
	1 channel 32-bit floating point image compare. More...
NppStatus	nppiCompare_32f_C1R (const Npp32f *pSrc1, int nSrc1Step, const Npp32f *pSrc2, int nSrc2Step, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppCmpOp eComparisonOperation)
NppStatus	nppiCompare_32f_C3R_Ctx (const Npp32f *pSrc1, int nSrc1Step, const Npp32f *pSrc2, int nSrc2Step, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppCmpOp eComparisonOperation, NppStreamContext nppStreamCtx)
	3 channel 32-bit floating point image compare. More...
NppStatus	nppiCompare_32f_C3R (const Npp32f *pSrc1, int nSrc1Step, const Npp32f *pSrc2, int nSrc2Step, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppCmpOp eComparisonOperation)
NppStatus	nppiCompare_32f_C4R_Ctx (const Npp32f *pSrc1, int nSrc1Step, const Npp32f *pSrc2, int nSrc2Step, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppCmpOp eComparisonOperation, NppStreamContext nppStreamCtx)
	4 channel 32-bit floating point image compare. More...
NppStatus	nppiCompare_32f_C4R (const Npp32f *pSrc1, int nSrc1Step, const Npp32f *pSrc2, int nSrc2Step, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppCmpOp eComparisonOperation)
NppStatus	nppiCompare_32f_AC4R_Ctx (const Npp32f *pSrc1, int nSrc1Step, const Npp32f *pSrc2, int nSrc2Step, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppCmpOp eComparisonOperation, NppStreamContext nppStreamCtx)
	4 channel 32-bit signed floating point compare, not affecting Alpha. More...
NppStatus	nppiCompare_32f_AC4R (const Npp32f *pSrc1, int nSrc1Step, const Npp32f *pSrc2, int nSrc2Step, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, NppCmpOp eComparisonOperation)

Detailed Description

Compare the pixels of two images and create a binary result image.

In case of multi-channel image types, the condition must be fulfilled for all channels, otherwise the comparison is considered false. The "binary" result image is of type 8u_C1. False is represented by 0, true by NPP_MAX_8U.

Common parameters for nppiCompare functions include:

Parameters

pSrc1	Source-Image Pointer.
nSrc1Step	Source-Image Line Step.
pSrc2	Source-Image Pointer.
nSrc2Step	Source-Image Line Step.
pDst	Destination-Image Pointer.
nDstStep	Destination-Image Line Step.
oSizeROI	Region-of-Interest (ROI).
eComparisonOperation	Specifies the comparison operation to be used in the pixel comparison.
nppStreamCtx	Application Managed Stream Context.

Returns

Image Data Related Error Codes, ROI Related Error Codes

Function Documentation

NppStatus nppiCompare_16s_AC4R	(	const Npp16s *	pSrc1,
		int	nSrc1Step,
		const Npp16s *	pSrc2,
		int	nSrc2Step,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppCmpOp	eComparisonOperation
	)

NppStatus nppiCompare_16s_AC4R_Ctx	(	const Npp16s *	pSrc1,
		int	nSrc1Step,
		const Npp16s *	pSrc2,
		int	nSrc2Step,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppCmpOp	eComparisonOperation,
		NppStreamContext	nppStreamCtx
	)

4 channel 16-bit signed short image compare, not affecting Alpha.

Compare pSrc1's pixels with corresponding pixels in pSrc2.

For common parameter descriptions, see Common parameters for nppiCompare functions.

NppStatus nppiCompare_16s_C1R	(	const Npp16s *	pSrc1,
		int	nSrc1Step,
		const Npp16s *	pSrc2,
		int	nSrc2Step,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppCmpOp	eComparisonOperation
	)

NppStatus nppiCompare_16s_C1R_Ctx	(	const Npp16s *	pSrc1,
		int	nSrc1Step,
		const Npp16s *	pSrc2,
		int	nSrc2Step,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppCmpOp	eComparisonOperation,
		NppStreamContext	nppStreamCtx
	)

1 channel 16-bit signed short image compare.

Compare pSrc1's pixels with corresponding pixels in pSrc2.

For common parameter descriptions, see Common parameters for nppiCompare functions.

NppStatus nppiCompare_16s_C3R	(	const Npp16s *	pSrc1,
		int	nSrc1Step,
		const Npp16s *	pSrc2,
		int	nSrc2Step,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppCmpOp	eComparisonOperation
	)

NppStatus nppiCompare_16s_C3R_Ctx	(	const Npp16s *	pSrc1,
		int	nSrc1Step,
		const Npp16s *	pSrc2,
		int	nSrc2Step,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppCmpOp	eComparisonOperation,
		NppStreamContext	nppStreamCtx
	)

3 channel 16-bit signed short image compare.

Compare pSrc1's pixels with corresponding pixels in pSrc2.

For common parameter descriptions, see Common parameters for nppiCompare functions.

NppStatus nppiCompare_16s_C4R	(	const Npp16s *	pSrc1,
		int	nSrc1Step,
		const Npp16s *	pSrc2,
		int	nSrc2Step,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppCmpOp	eComparisonOperation
	)

NppStatus nppiCompare_16s_C4R_Ctx	(	const Npp16s *	pSrc1,
		int	nSrc1Step,
		const Npp16s *	pSrc2,
		int	nSrc2Step,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppCmpOp	eComparisonOperation,
		NppStreamContext	nppStreamCtx
	)

4 channel 16-bit signed short image compare.

Compare pSrc1's pixels with corresponding pixels in pSrc2.

For common parameter descriptions, see Common parameters for nppiCompare functions.

NppStatus nppiCompare_16u_AC4R	(	const Npp16u *	pSrc1,
		int	nSrc1Step,
		const Npp16u *	pSrc2,
		int	nSrc2Step,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppCmpOp	eComparisonOperation
	)

NppStatus nppiCompare_16u_AC4R_Ctx	(	const Npp16u *	pSrc1,
		int	nSrc1Step,
		const Npp16u *	pSrc2,
		int	nSrc2Step,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppCmpOp	eComparisonOperation,
		NppStreamContext	nppStreamCtx
	)

4 channel 16-bit unsigned short image compare, not affecting Alpha.

Compare pSrc1's pixels with corresponding pixels in pSrc2.

For common parameter descriptions, see Common parameters for nppiCompare functions.

NppStatus nppiCompare_16u_C1R	(	const Npp16u *	pSrc1,
		int	nSrc1Step,
		const Npp16u *	pSrc2,
		int	nSrc2Step,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppCmpOp	eComparisonOperation
	)

NppStatus nppiCompare_16u_C1R_Ctx	(	const Npp16u *	pSrc1,
		int	nSrc1Step,
		const Npp16u *	pSrc2,
		int	nSrc2Step,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppCmpOp	eComparisonOperation,
		NppStreamContext	nppStreamCtx
	)

1 channel 16-bit unsigned short image compare.

Compare pSrc1's pixels with corresponding pixels in pSrc2.

For common parameter descriptions, see Common parameters for nppiCompare functions.

NppStatus nppiCompare_16u_C3R	(	const Npp16u *	pSrc1,
		int	nSrc1Step,
		const Npp16u *	pSrc2,
		int	nSrc2Step,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppCmpOp	eComparisonOperation
	)

NppStatus nppiCompare_16u_C3R_Ctx	(	const Npp16u *	pSrc1,
		int	nSrc1Step,
		const Npp16u *	pSrc2,
		int	nSrc2Step,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppCmpOp	eComparisonOperation,
		NppStreamContext	nppStreamCtx
	)

3 channel 16-bit unsigned short image compare.

Compare pSrc1's pixels with corresponding pixels in pSrc2.

For common parameter descriptions, see Common parameters for nppiCompare functions.

NppStatus nppiCompare_16u_C4R	(	const Npp16u *	pSrc1,
		int	nSrc1Step,
		const Npp16u *	pSrc2,
		int	nSrc2Step,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppCmpOp	eComparisonOperation
	)

NppStatus nppiCompare_16u_C4R_Ctx	(	const Npp16u *	pSrc1,
		int	nSrc1Step,
		const Npp16u *	pSrc2,
		int	nSrc2Step,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppCmpOp	eComparisonOperation,
		NppStreamContext	nppStreamCtx
	)

4 channel 16-bit unsigned short image compare.

Compare pSrc1's pixels with corresponding pixels in pSrc2.

For common parameter descriptions, see Common parameters for nppiCompare functions.

NppStatus nppiCompare_32f_AC4R	(	const Npp32f *	pSrc1,
		int	nSrc1Step,
		const Npp32f *	pSrc2,
		int	nSrc2Step,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppCmpOp	eComparisonOperation
	)

NppStatus nppiCompare_32f_AC4R_Ctx	(	const Npp32f *	pSrc1,
		int	nSrc1Step,
		const Npp32f *	pSrc2,
		int	nSrc2Step,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppCmpOp	eComparisonOperation,
		NppStreamContext	nppStreamCtx
	)

4 channel 32-bit signed floating point compare, not affecting Alpha.

Compare pSrc1's pixels with corresponding pixels in pSrc2.

For common parameter descriptions, see Common parameters for nppiCompare functions.

NppStatus nppiCompare_32f_C1R	(	const Npp32f *	pSrc1,
		int	nSrc1Step,
		const Npp32f *	pSrc2,
		int	nSrc2Step,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppCmpOp	eComparisonOperation
	)

NppStatus nppiCompare_32f_C1R_Ctx	(	const Npp32f *	pSrc1,
		int	nSrc1Step,
		const Npp32f *	pSrc2,
		int	nSrc2Step,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppCmpOp	eComparisonOperation,
		NppStreamContext	nppStreamCtx
	)

1 channel 32-bit floating point image compare.

Compare pSrc1's pixels with corresponding pixels in pSrc2.

For common parameter descriptions, see Common parameters for nppiCompare functions.

NppStatus nppiCompare_32f_C3R	(	const Npp32f *	pSrc1,
		int	nSrc1Step,
		const Npp32f *	pSrc2,
		int	nSrc2Step,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppCmpOp	eComparisonOperation
	)

NppStatus nppiCompare_32f_C3R_Ctx	(	const Npp32f *	pSrc1,
		int	nSrc1Step,
		const Npp32f *	pSrc2,
		int	nSrc2Step,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppCmpOp	eComparisonOperation,
		NppStreamContext	nppStreamCtx
	)

3 channel 32-bit floating point image compare.

Compare pSrc1's pixels with corresponding pixels in pSrc2.

For common parameter descriptions, see Common parameters for nppiCompare functions.

NppStatus nppiCompare_32f_C4R	(	const Npp32f *	pSrc1,
		int	nSrc1Step,
		const Npp32f *	pSrc2,
		int	nSrc2Step,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppCmpOp	eComparisonOperation
	)

NppStatus nppiCompare_32f_C4R_Ctx	(	const Npp32f *	pSrc1,
		int	nSrc1Step,
		const Npp32f *	pSrc2,
		int	nSrc2Step,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppCmpOp	eComparisonOperation,
		NppStreamContext	nppStreamCtx
	)

4 channel 32-bit floating point image compare.

Compare pSrc1's pixels with corresponding pixels in pSrc2.

For common parameter descriptions, see Common parameters for nppiCompare functions.

NppStatus nppiCompare_8u_AC4R	(	const Npp8u *	pSrc1,
		int	nSrc1Step,
		const Npp8u *	pSrc2,
		int	nSrc2Step,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppCmpOp	eComparisonOperation
	)

NppStatus nppiCompare_8u_AC4R_Ctx	(	const Npp8u *	pSrc1,
		int	nSrc1Step,
		const Npp8u *	pSrc2,
		int	nSrc2Step,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppCmpOp	eComparisonOperation,
		NppStreamContext	nppStreamCtx
	)

4 channel 8-bit unsigned char image compare, not affecting Alpha.

Compare pSrc1's pixels with corresponding pixels in pSrc2.

For common parameter descriptions, see Common parameters for nppiCompare functions.

NppStatus nppiCompare_8u_C1R	(	const Npp8u *	pSrc1,
		int	nSrc1Step,
		const Npp8u *	pSrc2,
		int	nSrc2Step,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppCmpOp	eComparisonOperation
	)

NppStatus nppiCompare_8u_C1R_Ctx	(	const Npp8u *	pSrc1,
		int	nSrc1Step,
		const Npp8u *	pSrc2,
		int	nSrc2Step,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppCmpOp	eComparisonOperation,
		NppStreamContext	nppStreamCtx
	)

1 channel 8-bit unsigned char image compare.

Compare pSrc1's pixels with corresponding pixels in pSrc2.

For common parameter descriptions, see Common parameters for nppiCompare functions.

NppStatus nppiCompare_8u_C3R	(	const Npp8u *	pSrc1,
		int	nSrc1Step,
		const Npp8u *	pSrc2,
		int	nSrc2Step,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppCmpOp	eComparisonOperation
	)

NppStatus nppiCompare_8u_C3R_Ctx	(	const Npp8u *	pSrc1,
		int	nSrc1Step,
		const Npp8u *	pSrc2,
		int	nSrc2Step,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppCmpOp	eComparisonOperation,
		NppStreamContext	nppStreamCtx
	)

3 channel 8-bit unsigned char image compare.

Compare pSrc1's pixels with corresponding pixels in pSrc2.

For common parameter descriptions, see Common parameters for nppiCompare functions.

NppStatus nppiCompare_8u_C4R	(	const Npp8u *	pSrc1,
		int	nSrc1Step,
		const Npp8u *	pSrc2,
		int	nSrc2Step,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppCmpOp	eComparisonOperation
	)

NppStatus nppiCompare_8u_C4R_Ctx	(	const Npp8u *	pSrc1,
		int	nSrc1Step,
		const Npp8u *	pSrc2,
		int	nSrc2Step,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		NppCmpOp	eComparisonOperation,
		NppStreamContext	nppStreamCtx
	)

4 channel 8-bit unsigned char image compare.

Compare pSrc1's pixels with corresponding pixels in pSrc2.

For common parameter descriptions, see Common parameters for nppiCompare functions.