Compare Image Difference With Constant Within Epsilon Operations

Compare differences between image pixels and constant within an epsilon value and create a binary result image. More...

Functions
NppStatus	nppiCompareEqualEpsC_32f_C1R_Ctx (const Npp32f *pSrc, int nSrcStep, const Npp32f nConstant, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, Npp32f nEpsilon, NppStreamContext nppStreamCtx)
	1 channel 32-bit floating point image compare whether image and constant are equal within epsilon. More...
NppStatus	nppiCompareEqualEpsC_32f_C1R (const Npp32f *pSrc, int nSrcStep, const Npp32f nConstant, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, Npp32f nEpsilon)
NppStatus	nppiCompareEqualEpsC_32f_C3R_Ctx (const Npp32f *pSrc, int nSrcStep, const Npp32f *pConstants, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, Npp32f nEpsilon, NppStreamContext nppStreamCtx)
	3 channel 32-bit floating point image compare whether image and constant are equal within epsilon. More...
NppStatus	nppiCompareEqualEpsC_32f_C3R (const Npp32f *pSrc, int nSrcStep, const Npp32f *pConstants, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, Npp32f nEpsilon)
NppStatus	nppiCompareEqualEpsC_32f_C4R_Ctx (const Npp32f *pSrc, int nSrcStep, const Npp32f *pConstants, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, Npp32f nEpsilon, NppStreamContext nppStreamCtx)
	4 channel 32-bit floating point image compare whether image and constant are equal within epsilon. More...
NppStatus	nppiCompareEqualEpsC_32f_C4R (const Npp32f *pSrc, int nSrcStep, const Npp32f *pConstants, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, Npp32f nEpsilon)
NppStatus	nppiCompareEqualEpsC_32f_AC4R_Ctx (const Npp32f *pSrc, int nSrcStep, const Npp32f *pConstants, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, Npp32f nEpsilon, NppStreamContext nppStreamCtx)
	4 channel 32-bit signed floating point compare whether image and constant are equal within epsilon, not affecting Alpha. More...
NppStatus	nppiCompareEqualEpsC_32f_AC4R (const Npp32f *pSrc, int nSrcStep, const Npp32f *pConstants, Npp8u *pDst, int nDstStep, NppiSize oSizeROI, Npp32f nEpsilon)

Detailed Description

Compare differences between image pixels and constant within an epsilon value 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 nppiCompareEqualEpsC functions include:

Parameters

pSrc	Source-Image Pointer.
nSrcStep	Source-Image Line Step.
nConstant	constant value for single channel functions.
pConstants	pointer to a list of constants, one per color channel for multi-channel image functions.
pDst	Destination-Image Pointer.
nDstStep	Destination-Image Line Step.
oSizeROI	Region-of-Interest (ROI).
nEpsilon	epsilon tolerance value to compare to per color channel pixel absolute differences
nppStreamCtx	Application Managed Stream Context.

Returns

Image Data Related Error Codes, ROI Related Error Codes

Function Documentation

NppStatus nppiCompareEqualEpsC_32f_AC4R	(	const Npp32f *	pSrc,
		int	nSrcStep,
		const Npp32f *	pConstants,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		Npp32f	nEpsilon
	)

NppStatus nppiCompareEqualEpsC_32f_AC4R_Ctx	(	const Npp32f *	pSrc,
		int	nSrcStep,
		const Npp32f *	pConstants,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		Npp32f	nEpsilon,
		NppStreamContext	nppStreamCtx
	)

4 channel 32-bit signed floating point compare whether image and constant are equal within epsilon, not affecting Alpha.

Compare pSrc's pixels with constant value to determine whether they are equal within a difference of epsilon.

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

NppStatus nppiCompareEqualEpsC_32f_C1R	(	const Npp32f *	pSrc,
		int	nSrcStep,
		const Npp32f	nConstant,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		Npp32f	nEpsilon
	)

NppStatus nppiCompareEqualEpsC_32f_C1R_Ctx	(	const Npp32f *	pSrc,
		int	nSrcStep,
		const Npp32f	nConstant,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		Npp32f	nEpsilon,
		NppStreamContext	nppStreamCtx
	)

1 channel 32-bit floating point image compare whether image and constant are equal within epsilon.

Compare pSrc's pixels with constant value to determine whether they are equal within a difference of epsilon.

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

NppStatus nppiCompareEqualEpsC_32f_C3R	(	const Npp32f *	pSrc,
		int	nSrcStep,
		const Npp32f *	pConstants,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		Npp32f	nEpsilon
	)

NppStatus nppiCompareEqualEpsC_32f_C3R_Ctx	(	const Npp32f *	pSrc,
		int	nSrcStep,
		const Npp32f *	pConstants,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		Npp32f	nEpsilon,
		NppStreamContext	nppStreamCtx
	)

3 channel 32-bit floating point image compare whether image and constant are equal within epsilon.

Compare pSrc's pixels with constant value to determine whether they are equal within a difference of epsilon.

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

NppStatus nppiCompareEqualEpsC_32f_C4R	(	const Npp32f *	pSrc,
		int	nSrcStep,
		const Npp32f *	pConstants,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		Npp32f	nEpsilon
	)

NppStatus nppiCompareEqualEpsC_32f_C4R_Ctx	(	const Npp32f *	pSrc,
		int	nSrcStep,
		const Npp32f *	pConstants,
		Npp8u *	pDst,
		int	nDstStep,
		NppiSize	oSizeROI,
		Npp32f	nEpsilon,
		NppStreamContext	nppStreamCtx
	)

4 channel 32-bit floating point image compare whether image and constant are equal within epsilon.

Compare pSrc's pixels with constant value to determine whether they are equal within a difference of epsilon.

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