Noise removal filtering of an image using an adaptive Wiener filter with border control. More...

Functions
NppStatus	nppiFilterWienerBorder_8u_C1R (const Npp8u pSrc, Npp32s nSrcStep, NppiSize oSrcSize, NppiPoint oSrcOffset, Npp8u pDst, Npp32s nDstStep, NppiSize oSizeROI, NppiSize oMaskSize, NppiPoint oAnchor, Npp32f aNoise[1], NppiBorderType eBorderType)
	Single channel 8-bit unsigned Wiener filter with border control. More...

NppStatus	nppiFilterWienerBorder_8u_C3R (const Npp8u pSrc, Npp32s nSrcStep, NppiSize oSrcSize, NppiPoint oSrcOffset, Npp8u pDst, Npp32s nDstStep, NppiSize oSizeROI, NppiSize oMaskSize, NppiPoint oAnchor, Npp32f aNoise[3], NppiBorderType eBorderType)
	Three channel 8-bit unsigned Wiener filter with border control. More...

NppStatus	nppiFilterWienerBorder_8u_C4R (const Npp8u pSrc, Npp32s nSrcStep, NppiSize oSrcSize, NppiPoint oSrcOffset, Npp8u pDst, Npp32s nDstStep, NppiSize oSizeROI, NppiSize oMaskSize, NppiPoint oAnchor, Npp32f aNoise[4], NppiBorderType eBorderType)
	Four channel 8-bit unsigned Wiener filter with border control. More...

NppStatus	nppiFilterWienerBorder_8u_AC4R (const Npp8u pSrc, Npp32s nSrcStep, NppiSize oSrcSize, NppiPoint oSrcOffset, Npp8u pDst, Npp32s nDstStep, NppiSize oSizeROI, NppiSize oMaskSize, NppiPoint oAnchor, Npp32f aNoise[3], NppiBorderType eBorderType)
	Four channel 8-bit unsigned Wiener filter with border control, ignoring alpha channel. More...

NppStatus	nppiFilterWienerBorder_16s_C1R (const Npp16s pSrc, Npp32s nSrcStep, NppiSize oSrcSize, NppiPoint oSrcOffset, Npp16s pDst, Npp32s nDstStep, NppiSize oSizeROI, NppiSize oMaskSize, NppiPoint oAnchor, Npp32f aNoise[1], NppiBorderType eBorderType)
	Single channel 16-bit signed Wiener filter with border control. More...

NppStatus	nppiFilterWienerBorder_16s_C3R (const Npp16s pSrc, Npp32s nSrcStep, NppiSize oSrcSize, NppiPoint oSrcOffset, Npp16s pDst, Npp32s nDstStep, NppiSize oSizeROI, NppiSize oMaskSize, NppiPoint oAnchor, Npp32f aNoise[3], NppiBorderType eBorderType)
	Three channel 16-bit signed Wiener filter with border control. More...

NppStatus	nppiFilterWienerBorder_16s_C4R (const Npp16s pSrc, Npp32s nSrcStep, NppiSize oSrcSize, NppiPoint oSrcOffset, Npp16s pDst, Npp32s nDstStep, NppiSize oSizeROI, NppiSize oMaskSize, NppiPoint oAnchor, Npp32f aNoise[4], NppiBorderType eBorderType)
	Four channel 16-bit signed Wiener filter with border control. More...

NppStatus	nppiFilterWienerBorder_16s_AC4R (const Npp16s pSrc, Npp32s nSrcStep, NppiSize oSrcSize, NppiPoint oSrcOffset, Npp16s pDst, Npp32s nDstStep, NppiSize oSizeROI, NppiSize oMaskSize, NppiPoint oAnchor, Npp32f aNoise[3], NppiBorderType eBorderType)
	Four channel 16-bit signed Wiener filter with border control, ignoring alpha channel. More...

NppStatus	nppiFilterWienerBorder_32f_C1R (const Npp32f pSrc, Npp32s nSrcStep, NppiSize oSrcSize, NppiPoint oSrcOffset, Npp32f pDst, Npp32s nDstStep, NppiSize oSizeROI, NppiSize oMaskSize, NppiPoint oAnchor, Npp32f aNoise[1], NppiBorderType eBorderType)
	Single channel 32-bit float Wiener filter with border control. More...

NppStatus	nppiFilterWienerBorder_32f_C3R (const Npp32f pSrc, Npp32s nSrcStep, NppiSize oSrcSize, NppiPoint oSrcOffset, Npp32f pDst, Npp32s nDstStep, NppiSize oSizeROI, NppiSize oMaskSize, NppiPoint oAnchor, Npp32f aNoise[3], NppiBorderType eBorderType)
	Three channel 32-bit float Wiener filter with border control. More...

NppStatus	nppiFilterWienerBorder_32f_C4R (const Npp32f pSrc, Npp32s nSrcStep, NppiSize oSrcSize, NppiPoint oSrcOffset, Npp32f pDst, Npp32s nDstStep, NppiSize oSizeROI, NppiSize oMaskSize, NppiPoint oAnchor, Npp32f aNoise[4], NppiBorderType eBorderType)
	Four channel 32-bit float Wiener filter with border control. More...

NppStatus	nppiFilterWienerBorder_32f_AC4R (const Npp32f pSrc, Npp32s nSrcStep, NppiSize oSrcSize, NppiPoint oSrcOffset, Npp32f pDst, Npp32s nDstStep, NppiSize oSizeROI, NppiSize oMaskSize, NppiPoint oAnchor, Npp32f aNoise[3], NppiBorderType eBorderType)
	Four channel 32-bit float Wiener filter with border control, ignoring alpha channel. More...

Detailed Description

Noise removal filtering of an image using an adaptive Wiener filter with border control.

Pixels under the source mask are used to generate statistics about the local neighborhood which are then used to control the amount of adaptive noise filtering locally applied.

Currently only the NPP_BORDER_REPLICATE border type operation is supported.

Common parameters for nppiFilterWienerBorder functions include:

Parameters

pSrc	Source-Image Pointer.
nSrcStep	Source-Image Line Step.
oSrcSize	Source image width and height in pixels relative to pSrc.
oSrcOffset	The pixel offset that pSrc points to relative to the origin of the source image.
pDst	Destination-Image Pointer.
nDstStep	Destination-Image Line Step.
oSizeROI	Region-of-Interest (ROI).
oMaskSize	Pixel Width and Height of the rectangular region of interest surrounding the source pixel.
oAnchor	Positive X and Y relative offsets of primary pixel in region of interest surrounding the source pixel relative to bottom right of oMaskSize.
aNoise	Fixed size array of per-channel noise variance level value in range of 0.0F to 1.0F.
eBorderType	The border type operation to be applied at source image border boundaries.

Returns: Image Data Related Error Codes, ROI Related Error Codes

For each pixel in the source image the function estimates the local mean and variance in the neighborhood defined by oMaskSize relative to the primary source pixel located at oAnchor.x and oAnchor.y. Given an oMaskSize with width $W$ and height $H$ , the mean, variance, and destination pixel value will be computed per channel as

$Mean = \frac{1}{W\cdot H}\sum_{j=0}^{H-1}\sum_{i=0}^{W-1}pSrc(j,i)$

$Variance^2 = \frac{1}{W\cdot H}\sum_{j=0}^{H-1}\sum_{i=0}^{W-1}(pSrc(j,i)^2-Mean^2)$

$pDst(j,i) = Mean+\frac{(Variance^2-NoiseVariance)}{Variance^2}\cdot {(pSrc(j,i)-Mean)}$

Function Documentation

NppStatus nppiFilterWienerBorder_16s_AC4R	(	const Npp16s *	pSrc,
		Npp32s	nSrcStep,
		NppiSize	oSrcSize,
		NppiPoint	oSrcOffset,
		Npp16s *	pDst,
		Npp32s	nDstStep,
		NppiSize	oSizeROI,
		NppiSize	oMaskSize,
		NppiPoint	oAnchor,
		Npp32f	aNoise[3],
		NppiBorderType	eBorderType
	)

Four channel 16-bit signed Wiener filter with border control, ignoring alpha channel.

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

NppStatus nppiFilterWienerBorder_16s_C1R	(	const Npp16s *	pSrc,
		Npp32s	nSrcStep,
		NppiSize	oSrcSize,
		NppiPoint	oSrcOffset,
		Npp16s *	pDst,
		Npp32s	nDstStep,
		NppiSize	oSizeROI,
		NppiSize	oMaskSize,
		NppiPoint	oAnchor,
		Npp32f	aNoise[1],
		NppiBorderType	eBorderType
	)

Single channel 16-bit signed Wiener filter with border control.

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

NppStatus nppiFilterWienerBorder_16s_C3R	(	const Npp16s *	pSrc,
		Npp32s	nSrcStep,
		NppiSize	oSrcSize,
		NppiPoint	oSrcOffset,
		Npp16s *	pDst,
		Npp32s	nDstStep,
		NppiSize	oSizeROI,
		NppiSize	oMaskSize,
		NppiPoint	oAnchor,
		Npp32f	aNoise[3],
		NppiBorderType	eBorderType
	)

Three channel 16-bit signed Wiener filter with border control.

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

NppStatus nppiFilterWienerBorder_16s_C4R	(	const Npp16s *	pSrc,
		Npp32s	nSrcStep,
		NppiSize	oSrcSize,
		NppiPoint	oSrcOffset,
		Npp16s *	pDst,
		Npp32s	nDstStep,
		NppiSize	oSizeROI,
		NppiSize	oMaskSize,
		NppiPoint	oAnchor,
		Npp32f	aNoise[4],
		NppiBorderType	eBorderType
	)

Four channel 16-bit signed Wiener filter with border control.

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

NppStatus nppiFilterWienerBorder_32f_AC4R	(	const Npp32f *	pSrc,
		Npp32s	nSrcStep,
		NppiSize	oSrcSize,
		NppiPoint	oSrcOffset,
		Npp32f *	pDst,
		Npp32s	nDstStep,
		NppiSize	oSizeROI,
		NppiSize	oMaskSize,
		NppiPoint	oAnchor,
		Npp32f	aNoise[3],
		NppiBorderType	eBorderType
	)

Four channel 32-bit float Wiener filter with border control, ignoring alpha channel.

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

NppStatus nppiFilterWienerBorder_32f_C1R	(	const Npp32f *	pSrc,
		Npp32s	nSrcStep,
		NppiSize	oSrcSize,
		NppiPoint	oSrcOffset,
		Npp32f *	pDst,
		Npp32s	nDstStep,
		NppiSize	oSizeROI,
		NppiSize	oMaskSize,
		NppiPoint	oAnchor,
		Npp32f	aNoise[1],
		NppiBorderType	eBorderType
	)

Single channel 32-bit float Wiener filter with border control.

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

NppStatus nppiFilterWienerBorder_32f_C3R	(	const Npp32f *	pSrc,
		Npp32s	nSrcStep,
		NppiSize	oSrcSize,
		NppiPoint	oSrcOffset,
		Npp32f *	pDst,
		Npp32s	nDstStep,
		NppiSize	oSizeROI,
		NppiSize	oMaskSize,
		NppiPoint	oAnchor,
		Npp32f	aNoise[3],
		NppiBorderType	eBorderType
	)

Three channel 32-bit float Wiener filter with border control.

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

NppStatus nppiFilterWienerBorder_32f_C4R	(	const Npp32f *	pSrc,
		Npp32s	nSrcStep,
		NppiSize	oSrcSize,
		NppiPoint	oSrcOffset,
		Npp32f *	pDst,
		Npp32s	nDstStep,
		NppiSize	oSizeROI,
		NppiSize	oMaskSize,
		NppiPoint	oAnchor,
		Npp32f	aNoise[4],
		NppiBorderType	eBorderType
	)

Four channel 32-bit float Wiener filter with border control.

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

NppStatus nppiFilterWienerBorder_8u_AC4R	(	const Npp8u *	pSrc,
		Npp32s	nSrcStep,
		NppiSize	oSrcSize,
		NppiPoint	oSrcOffset,
		Npp8u *	pDst,
		Npp32s	nDstStep,
		NppiSize	oSizeROI,
		NppiSize	oMaskSize,
		NppiPoint	oAnchor,
		Npp32f	aNoise[3],
		NppiBorderType	eBorderType
	)

Four channel 8-bit unsigned Wiener filter with border control, ignoring alpha channel.

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

NppStatus nppiFilterWienerBorder_8u_C1R	(	const Npp8u *	pSrc,
		Npp32s	nSrcStep,
		NppiSize	oSrcSize,
		NppiPoint	oSrcOffset,
		Npp8u *	pDst,
		Npp32s	nDstStep,
		NppiSize	oSizeROI,
		NppiSize	oMaskSize,
		NppiPoint	oAnchor,
		Npp32f	aNoise[1],
		NppiBorderType	eBorderType
	)

Single channel 8-bit unsigned Wiener filter with border control.

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

NppStatus nppiFilterWienerBorder_8u_C3R	(	const Npp8u *	pSrc,
		Npp32s	nSrcStep,
		NppiSize	oSrcSize,
		NppiPoint	oSrcOffset,
		Npp8u *	pDst,
		Npp32s	nDstStep,
		NppiSize	oSizeROI,
		NppiSize	oMaskSize,
		NppiPoint	oAnchor,
		Npp32f	aNoise[3],
		NppiBorderType	eBorderType
	)

Three channel 8-bit unsigned Wiener filter with border control.

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

NppStatus nppiFilterWienerBorder_8u_C4R	(	const Npp8u *	pSrc,
		Npp32s	nSrcStep,
		NppiSize	oSrcSize,
		NppiPoint	oSrcOffset,
		Npp8u *	pDst,
		Npp32s	nDstStep,
		NppiSize	oSizeROI,
		NppiSize	oMaskSize,
		NppiPoint	oAnchor,
		Npp32f	aNoise[4],
		NppiBorderType	eBorderType
	)

Four channel 8-bit unsigned Wiener filter with border control.

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

Functions

Detailed Description

Common parameters for nppiFilterWienerBorder functions include:

Function Documentation