Class NPPNativeMethods.NPPi.FilterGaussPyramid

Filters the image using a separable Gaussian filter kernel with user supplied floating point coefficients with downsampling and border control. If the downsampling rate is equivalent to an integer value then unnecessary source pixels are just skipped. If any portion of the mask overlaps the source image boundary the requested border type operation is applied to all mask pixels which fall outside of the source image. Filters the image using a separable Gaussian filter kernel with user supplied floating point coefficients with upsampling and border control. If the upsampling rate is equivalent to an integer value then unnecessary source pixels are just skipped. If any portion of the mask overlaps the source image boundary the requested border type operation is applied to all mask pixels which fall outside of the source image. Currently only the Replicate and Mirror border type operation are supported.

Inheritance

System.Object

NPPNativeMethods.NPPi.FilterGaussPyramid

Inherited Members

System.Object.Equals(System.Object)

System.Object.Equals(System.Object, System.Object)

System.Object.GetHashCode()

System.Object.GetType()

System.Object.MemberwiseClone()

System.Object.ReferenceEquals(System.Object, System.Object)

System.Object.ToString()

Namespace: ManagedCuda.NPP

Assembly: NPP.dll

Syntax

public class FilterGaussPyramid

Methods

nppiFilterGaussPyramidLayerDownBorder_16u_C1R(CUdeviceptr, Int32, NppiSize, NppiPoint, CUdeviceptr, Int32, NppiSize, Single, Int32, CUdeviceptr, NppiBorderType)

Single channel 16-bit unsigned Gauss filter with downsampling and border control.

Declaration

public static NppStatus nppiFilterGaussPyramidLayerDownBorder_16u_C1R(CUdeviceptr pSrc, int nSrcStep, NppiSize oSrcSize, NppiPoint oSrcOffset, CUdeviceptr pDst, int nDstStep, NppiSize oSizeROI, float nRate, int nFilterTaps, CUdeviceptr pKernel, NppiBorderType eBorderType)

Parameters

Type	Name	Description
CUdeviceptr	pSrc	Source-Image Pointer.
System.Int32	nSrcStep	Source-Image Line Step.
NppiSize	oSrcSize	Source image width and height in pixels relative to pSrc.
NppiPoint	oSrcOffset	The pixel offset that pSrc points to relative to the origin of the source image.
CUdeviceptr	pDst	Destination-Image Pointer.
System.Int32	nDstStep	Destination-Image Line Step.
NppiSize	oSizeROI	Region-of-Interest (ROI).
System.Single	nRate	The downsampling rate to be used. For integer equivalent rates unnecessary source pixels are just skipped. For non-integer rates the source image is bilinear interpolated. nRate must be > 1.0F and <= 10.0F.
System.Int32	nFilterTaps	The number of filter taps where nFilterTaps = 2 * ((int)((float)ceil(radius) + 0.5F) ) + 1.
CUdeviceptr	pKernel	Pointer to an array of nFilterTaps kernel coefficients which sum to 1.0F.
NppiBorderType	eBorderType	The border type operation to be applied at source image border boundaries.

Returns

Type	Description
NppStatus	StepError, NotEvenStepError, NullPointerError, AlignmentError, StepError, SizeError

nppiFilterGaussPyramidLayerDownBorder_16u_C3R(CUdeviceptr, Int32, NppiSize, NppiPoint, CUdeviceptr, Int32, NppiSize, Single, Int32, CUdeviceptr, NppiBorderType)

Three channel 16-bit unsigned Gauss filter with downsampling and border control.

Declaration

public static NppStatus nppiFilterGaussPyramidLayerDownBorder_16u_C3R(CUdeviceptr pSrc, int nSrcStep, NppiSize oSrcSize, NppiPoint oSrcOffset, CUdeviceptr pDst, int nDstStep, NppiSize oSizeROI, float nRate, int nFilterTaps, CUdeviceptr pKernel, NppiBorderType eBorderType)

Parameters

Type	Name	Description
CUdeviceptr	pSrc	Source-Image Pointer.
System.Int32	nSrcStep	Source-Image Line Step.
NppiSize	oSrcSize	Source image width and height in pixels relative to pSrc.
NppiPoint	oSrcOffset	The pixel offset that pSrc points to relative to the origin of the source image.
CUdeviceptr	pDst	Destination-Image Pointer.
System.Int32	nDstStep	Destination-Image Line Step.
NppiSize	oSizeROI	Region-of-Interest (ROI).
System.Single	nRate	The downsampling rate to be used. For integer equivalent rates unnecessary source pixels are just skipped. For non-integer rates the source image is bilinear interpolated. nRate must be > 1.0F and <= 10.0F.
System.Int32	nFilterTaps	The number of filter taps where nFilterTaps = 2 * ((int)((float)ceil(radius) + 0.5F) ) + 1.
CUdeviceptr	pKernel	Pointer to an array of nFilterTaps kernel coefficients which sum to 1.0F.
NppiBorderType	eBorderType	The border type operation to be applied at source image border boundaries.

Returns

Type	Description
NppStatus	StepError, NotEvenStepError, NullPointerError, AlignmentError, StepError, SizeError

nppiFilterGaussPyramidLayerDownBorder_32f_C1R(CUdeviceptr, Int32, NppiSize, NppiPoint, CUdeviceptr, Int32, NppiSize, Single, Int32, CUdeviceptr, NppiBorderType)

Single channel 32-bit floating-point Gauss filter downsampling and with border control.

Declaration

public static NppStatus nppiFilterGaussPyramidLayerDownBorder_32f_C1R(CUdeviceptr pSrc, int nSrcStep, NppiSize oSrcSize, NppiPoint oSrcOffset, CUdeviceptr pDst, int nDstStep, NppiSize oSizeROI, float nRate, int nFilterTaps, CUdeviceptr pKernel, NppiBorderType eBorderType)

Parameters

Type	Name	Description
CUdeviceptr	pSrc	Source-Image Pointer.
System.Int32	nSrcStep	Source-Image Line Step.
NppiSize	oSrcSize	Source image width and height in pixels relative to pSrc.
NppiPoint	oSrcOffset	The pixel offset that pSrc points to relative to the origin of the source image.
CUdeviceptr	pDst	Destination-Image Pointer.
System.Int32	nDstStep	Destination-Image Line Step.
NppiSize	oSizeROI	Region-of-Interest (ROI).
System.Single	nRate	The downsampling rate to be used. For integer equivalent rates unnecessary source pixels are just skipped. For non-integer rates the source image is bilinear interpolated. nRate must be > 1.0F and <= 10.0F.
System.Int32	nFilterTaps	The number of filter taps where nFilterTaps = 2 * ((int)((float)ceil(radius) + 0.5F) ) + 1.
CUdeviceptr	pKernel	Pointer to an array of nFilterTaps kernel coefficients which sum to 1.0F.
NppiBorderType	eBorderType	The border type operation to be applied at source image border boundaries.

Returns

Type	Description
NppStatus	StepError, NotEvenStepError, NullPointerError, AlignmentError, StepError, SizeError

nppiFilterGaussPyramidLayerDownBorder_32f_C3R(CUdeviceptr, Int32, NppiSize, NppiPoint, CUdeviceptr, Int32, NppiSize, Single, Int32, CUdeviceptr, NppiBorderType)

Three channel 32-bit floating-point Gauss filter with downsampling and border control.

Declaration

public static NppStatus nppiFilterGaussPyramidLayerDownBorder_32f_C3R(CUdeviceptr pSrc, int nSrcStep, NppiSize oSrcSize, NppiPoint oSrcOffset, CUdeviceptr pDst, int nDstStep, NppiSize oSizeROI, float nRate, int nFilterTaps, CUdeviceptr pKernel, NppiBorderType eBorderType)

Parameters

Type	Name	Description
CUdeviceptr	pSrc	Source-Image Pointer.
System.Int32	nSrcStep	Source-Image Line Step.
NppiSize	oSrcSize	Source image width and height in pixels relative to pSrc.
NppiPoint	oSrcOffset	The pixel offset that pSrc points to relative to the origin of the source image.
CUdeviceptr	pDst	Destination-Image Pointer.
System.Int32	nDstStep	Destination-Image Line Step.
NppiSize	oSizeROI	Region-of-Interest (ROI).
System.Single	nRate	The downsampling rate to be used. For integer equivalent rates unnecessary source pixels are just skipped. For non-integer rates the source image is bilinear interpolated. nRate must be > 1.0F and <= 10.0F.
System.Int32	nFilterTaps	The number of filter taps where nFilterTaps = 2 * ((int)((float)ceil(radius) + 0.5F) ) + 1.
CUdeviceptr	pKernel	Pointer to an array of nFilterTaps kernel coefficients which sum to 1.0F.
NppiBorderType	eBorderType	The border type operation to be applied at source image border boundaries.

Returns

Type	Description
NppStatus	StepError, NotEvenStepError, NullPointerError, AlignmentError, StepError, SizeError

nppiFilterGaussPyramidLayerDownBorder_8u_C1R(CUdeviceptr, Int32, NppiSize, NppiPoint, CUdeviceptr, Int32, NppiSize, Single, Int32, CUdeviceptr, NppiBorderType)

Single channel 8-bit unsigned Gauss filter with downsampling and border control.

Declaration

public static NppStatus nppiFilterGaussPyramidLayerDownBorder_8u_C1R(CUdeviceptr pSrc, int nSrcStep, NppiSize oSrcSize, NppiPoint oSrcOffset, CUdeviceptr pDst, int nDstStep, NppiSize oSizeROI, float nRate, int nFilterTaps, CUdeviceptr pKernel, NppiBorderType eBorderType)

Parameters

Type	Name	Description
CUdeviceptr	pSrc	Source-Image Pointer.
System.Int32	nSrcStep	Source-Image Line Step.
NppiSize	oSrcSize	Source image width and height in pixels relative to pSrc.
NppiPoint	oSrcOffset	The pixel offset that pSrc points to relative to the origin of the source image.
CUdeviceptr	pDst	Destination-Image Pointer.
System.Int32	nDstStep	Destination-Image Line Step.
NppiSize	oSizeROI	Region-of-Interest (ROI).
System.Single	nRate	The downsampling rate to be used. For integer equivalent rates unnecessary source pixels are just skipped. For non-integer rates the source image is bilinear interpolated. nRate must be > 1.0F and <= 10.0F.
System.Int32	nFilterTaps	The number of filter taps where nFilterTaps = 2 * ((int)((float)ceil(radius) + 0.5F) ) + 1.
CUdeviceptr	pKernel	Pointer to an array of nFilterTaps kernel coefficients which sum to 1.0F.
NppiBorderType	eBorderType	The border type operation to be applied at source image border boundaries.

Returns

Type	Description
NppStatus	StepError, NotEvenStepError, NullPointerError, AlignmentError, StepError, SizeError

nppiFilterGaussPyramidLayerDownBorder_8u_C3R(CUdeviceptr, Int32, NppiSize, NppiPoint, CUdeviceptr, Int32, NppiSize, Single, Int32, CUdeviceptr, NppiBorderType)

Three channel 8-bit unsigned Gauss filter with downsampling and border control.

Declaration

public static NppStatus nppiFilterGaussPyramidLayerDownBorder_8u_C3R(CUdeviceptr pSrc, int nSrcStep, NppiSize oSrcSize, NppiPoint oSrcOffset, CUdeviceptr pDst, int nDstStep, NppiSize oSizeROI, float nRate, int nFilterTaps, CUdeviceptr pKernel, NppiBorderType eBorderType)

Parameters

Type	Name	Description
CUdeviceptr	pSrc	Source-Image Pointer.
System.Int32	nSrcStep	Source-Image Line Step.
NppiSize	oSrcSize	Source image width and height in pixels relative to pSrc.
NppiPoint	oSrcOffset	The pixel offset that pSrc points to relative to the origin of the source image.
CUdeviceptr	pDst	Destination-Image Pointer.
System.Int32	nDstStep	Destination-Image Line Step.
NppiSize	oSizeROI	Region-of-Interest (ROI).
System.Single	nRate	The downsampling rate to be used. For integer equivalent rates unnecessary source pixels are just skipped. For non-integer rates the source image is bilinear interpolated. nRate must be > 1.0F and <= 10.0F.
System.Int32	nFilterTaps	The number of filter taps where nFilterTaps = 2 * ((int)((float)ceil(radius) + 0.5F) ) + 1.
CUdeviceptr	pKernel	Pointer to an array of nFilterTaps kernel coefficients which sum to 1.0F.
NppiBorderType	eBorderType	The border type operation to be applied at source image border boundaries.

Returns

Type	Description
NppStatus	StepError, NotEvenStepError, NullPointerError, AlignmentError, StepError, SizeError

nppiFilterGaussPyramidLayerUpBorder_16u_C1R(CUdeviceptr, Int32, NppiSize, NppiPoint, CUdeviceptr, Int32, NppiSize, Single, Int32, CUdeviceptr, NppiBorderType)

Single channel 16-bit unsigned Gauss filter with upsampling and border control.

Declaration

public static NppStatus nppiFilterGaussPyramidLayerUpBorder_16u_C1R(CUdeviceptr pSrc, int nSrcStep, NppiSize oSrcSize, NppiPoint oSrcOffset, CUdeviceptr pDst, int nDstStep, NppiSize oSizeROI, float nRate, int nFilterTaps, CUdeviceptr pKernel, NppiBorderType eBorderType)

Parameters

Type	Name	Description
CUdeviceptr	pSrc	Source-Image Pointer.
System.Int32	nSrcStep	Source-Image Line Step.
NppiSize	oSrcSize	Source image width and height in pixels relative to pSrc.
NppiPoint	oSrcOffset	The pixel offset that pSrc points to relative to the origin of the source image.
CUdeviceptr	pDst	Destination-Image Pointer.
System.Int32	nDstStep	Destination-Image Line Step.
NppiSize	oSizeROI	Region-of-Interest (ROI).
System.Single	nRate	The upsampling rate to be used. For integer equivalent rates unnecessary source pixels are just skipped. For non-integer rates the source image is bilinear interpolated. nRate must be > 1.0F and <= 10.0F.
System.Int32	nFilterTaps	The number of filter taps where nFilterTaps = 2 * ((int)((float)ceil(radius) + 0.5F) ) + 1.
CUdeviceptr	pKernel	Pointer to an array of nFilterTaps kernel coefficients which sum to 1.0F.
NppiBorderType	eBorderType	The border type operation to be applied at source image border boundaries.

Returns

Type	Description
NppStatus	StepError, NotEvenStepError, NullPointerError, AlignmentError, StepError, SizeError

nppiFilterGaussPyramidLayerUpBorder_16u_C3R(CUdeviceptr, Int32, NppiSize, NppiPoint, CUdeviceptr, Int32, NppiSize, Single, Int32, CUdeviceptr, NppiBorderType)

Three channel 16-bit unsigned Gauss filter with upsampling and border control.

Declaration

public static NppStatus nppiFilterGaussPyramidLayerUpBorder_16u_C3R(CUdeviceptr pSrc, int nSrcStep, NppiSize oSrcSize, NppiPoint oSrcOffset, CUdeviceptr pDst, int nDstStep, NppiSize oSizeROI, float nRate, int nFilterTaps, CUdeviceptr pKernel, NppiBorderType eBorderType)

Parameters

Type	Name	Description
CUdeviceptr	pSrc	Source-Image Pointer.
System.Int32	nSrcStep	Source-Image Line Step.
NppiSize	oSrcSize	Source image width and height in pixels relative to pSrc.
NppiPoint	oSrcOffset	The pixel offset that pSrc points to relative to the origin of the source image.
CUdeviceptr	pDst	Destination-Image Pointer.
System.Int32	nDstStep	Destination-Image Line Step.
NppiSize	oSizeROI	Region-of-Interest (ROI).
System.Single	nRate	The upsampling rate to be used. For integer equivalent rates unnecessary source pixels are just skipped. For non-integer rates the source image is bilinear interpolated. nRate must be > 1.0F and <= 10.0F.
System.Int32	nFilterTaps	The number of filter taps where nFilterTaps = 2 * ((int)((float)ceil(radius) + 0.5F) ) + 1.
CUdeviceptr	pKernel	Pointer to an array of nFilterTaps kernel coefficients which sum to 1.0F.
NppiBorderType	eBorderType	The border type operation to be applied at source image border boundaries.

Returns

Type	Description
NppStatus	StepError, NotEvenStepError, NullPointerError, AlignmentError, StepError, SizeError

nppiFilterGaussPyramidLayerUpBorder_32f_C1R(CUdeviceptr, Int32, NppiSize, NppiPoint, CUdeviceptr, Int32, NppiSize, Single, Int32, CUdeviceptr, NppiBorderType)

Single channel 32-bit floating-point Gauss filter upsampling and with border control.

Declaration

public static NppStatus nppiFilterGaussPyramidLayerUpBorder_32f_C1R(CUdeviceptr pSrc, int nSrcStep, NppiSize oSrcSize, NppiPoint oSrcOffset, CUdeviceptr pDst, int nDstStep, NppiSize oSizeROI, float nRate, int nFilterTaps, CUdeviceptr pKernel, NppiBorderType eBorderType)

Parameters

Type	Name	Description
CUdeviceptr	pSrc	Source-Image Pointer.
System.Int32	nSrcStep	Source-Image Line Step.
NppiSize	oSrcSize	Source image width and height in pixels relative to pSrc.
NppiPoint	oSrcOffset	The pixel offset that pSrc points to relative to the origin of the source image.
CUdeviceptr	pDst	Destination-Image Pointer.
System.Int32	nDstStep	Destination-Image Line Step.
NppiSize	oSizeROI	Region-of-Interest (ROI).
System.Single	nRate	The upsampling rate to be used. For integer equivalent rates unnecessary source pixels are just skipped. For non-integer rates the source image is bilinear interpolated. nRate must be > 1.0F and <= 10.0F.
System.Int32	nFilterTaps	The number of filter taps where nFilterTaps = 2 * ((int)((float)ceil(radius) + 0.5F) ) + 1.
CUdeviceptr	pKernel	Pointer to an array of nFilterTaps kernel coefficients which sum to 1.0F.
NppiBorderType	eBorderType	The border type operation to be applied at source image border boundaries.

Returns

Type	Description
NppStatus	StepError, NotEvenStepError, NullPointerError, AlignmentError, StepError, SizeError

nppiFilterGaussPyramidLayerUpBorder_32f_C3R(CUdeviceptr, Int32, NppiSize, NppiPoint, CUdeviceptr, Int32, NppiSize, Single, Int32, CUdeviceptr, NppiBorderType)

Three channel 32-bit floating-point Gauss filter with upsampling and border control.

Declaration

public static NppStatus nppiFilterGaussPyramidLayerUpBorder_32f_C3R(CUdeviceptr pSrc, int nSrcStep, NppiSize oSrcSize, NppiPoint oSrcOffset, CUdeviceptr pDst, int nDstStep, NppiSize oSizeROI, float nRate, int nFilterTaps, CUdeviceptr pKernel, NppiBorderType eBorderType)

Parameters

Type	Name	Description
CUdeviceptr	pSrc	Source-Image Pointer.
System.Int32	nSrcStep	Source-Image Line Step.
NppiSize	oSrcSize	Source image width and height in pixels relative to pSrc.
NppiPoint	oSrcOffset	The pixel offset that pSrc points to relative to the origin of the source image.
CUdeviceptr	pDst	Destination-Image Pointer.
System.Int32	nDstStep	Destination-Image Line Step.
NppiSize	oSizeROI	Region-of-Interest (ROI).
System.Single	nRate	The upsampling rate to be used. For integer equivalent rates unnecessary source pixels are just skipped. For non-integer rates the source image is bilinear interpolated. nRate must be > 1.0F and <= 10.0F.
System.Int32	nFilterTaps	The number of filter taps where nFilterTaps = 2 * ((int)((float)ceil(radius) + 0.5F) ) + 1.
CUdeviceptr	pKernel	Pointer to an array of nFilterTaps kernel coefficients which sum to 1.0F.
NppiBorderType	eBorderType	The border type operation to be applied at source image border boundaries.

Returns

Type	Description
NppStatus	StepError, NotEvenStepError, NullPointerError, AlignmentError, StepError, SizeError

nppiFilterGaussPyramidLayerUpBorder_8u_C1R(CUdeviceptr, Int32, NppiSize, NppiPoint, CUdeviceptr, Int32, NppiSize, Single, Int32, CUdeviceptr, NppiBorderType)

Single channel 8-bit unsigned Gauss filter with upsampling and border control.

Declaration

public static NppStatus nppiFilterGaussPyramidLayerUpBorder_8u_C1R(CUdeviceptr pSrc, int nSrcStep, NppiSize oSrcSize, NppiPoint oSrcOffset, CUdeviceptr pDst, int nDstStep, NppiSize oSizeROI, float nRate, int nFilterTaps, CUdeviceptr pKernel, NppiBorderType eBorderType)

Parameters

Type	Name	Description
CUdeviceptr	pSrc	Source-Image Pointer.
System.Int32	nSrcStep	Source-Image Line Step.
NppiSize	oSrcSize	Source image width and height in pixels relative to pSrc.
NppiPoint	oSrcOffset	The pixel offset that pSrc points to relative to the origin of the source image.
CUdeviceptr	pDst	Destination-Image Pointer.
System.Int32	nDstStep	Destination-Image Line Step.
NppiSize	oSizeROI	Region-of-Interest (ROI).
System.Single	nRate	The upsampling rate to be used. For integer equivalent rates unnecessary source pixels are just skipped. For non-integer rates the source image is bilinear interpolated. nRate must be > 1.0F and <= 10.0F.
System.Int32	nFilterTaps	The number of filter taps where nFilterTaps = 2 * ((int)((float)ceil(radius) + 0.5F) ) + 1.
CUdeviceptr	pKernel	Pointer to an array of nFilterTaps kernel coefficients which sum to 1.0F.
NppiBorderType	eBorderType	The border type operation to be applied at source image border boundaries.

Returns

Type	Description
NppStatus	StepError, NotEvenStepError, NullPointerError, AlignmentError, StepError, SizeError

nppiFilterGaussPyramidLayerUpBorder_8u_C3R(CUdeviceptr, Int32, NppiSize, NppiPoint, CUdeviceptr, Int32, NppiSize, Single, Int32, CUdeviceptr, NppiBorderType)

Three channel 8-bit unsigned Gauss filter with upsampling and border control.

Declaration

public static NppStatus nppiFilterGaussPyramidLayerUpBorder_8u_C3R(CUdeviceptr pSrc, int nSrcStep, NppiSize oSrcSize, NppiPoint oSrcOffset, CUdeviceptr pDst, int nDstStep, NppiSize oSizeROI, float nRate, int nFilterTaps, CUdeviceptr pKernel, NppiBorderType eBorderType)

Parameters

Type	Name	Description
CUdeviceptr	pSrc	Source-Image Pointer.
System.Int32	nSrcStep	Source-Image Line Step.
NppiSize	oSrcSize	Source image width and height in pixels relative to pSrc.
NppiPoint	oSrcOffset	The pixel offset that pSrc points to relative to the origin of the source image.
CUdeviceptr	pDst	Destination-Image Pointer.
System.Int32	nDstStep	Destination-Image Line Step.
NppiSize	oSizeROI	Region-of-Interest (ROI).
System.Single	nRate	The upsampling rate to be used. For integer equivalent rates unnecessary source pixels are just skipped. For non-integer rates the source image is bilinear interpolated. nRate must be > 1.0F and <= 10.0F.
System.Int32	nFilterTaps	The number of filter taps where nFilterTaps = 2 * ((int)((float)ceil(radius) + 0.5F) ) + 1.
CUdeviceptr	pKernel	Pointer to an array of nFilterTaps kernel coefficients which sum to 1.0F.
NppiBorderType	eBorderType	The border type operation to be applied at source image border boundaries.

Returns

Type	Description
NppStatus	StepError, NotEvenStepError, NullPointerError, AlignmentError, StepError, SizeError

nppiGetFilterGaussPyramidLayerDownBorderDstROI(Int32, Int32, ref NppiSize, Single)

Calculate destination image SizeROI width and height from source image ROI width and height and downsampling rate. It is highly recommended that this function be use to determine the destination image ROI for consistent results.

Declaration

public static NppStatus nppiGetFilterGaussPyramidLayerDownBorderDstROI(int nSrcROIWidth, int nSrcROIHeight, ref NppiSize pDstSizeROI, float nRate)

Parameters

Type	Name	Description
System.Int32	nSrcROIWidth	The desired source image ROI width, must be <= oSrcSize.width.
System.Int32	nSrcROIHeight	The desired source image ROI height, must be <= oSrcSize.height.
NppiSize	pDstSizeROI	Host memory pointer to the destination image roi_specification.
System.Single	nRate	The downsampling rate to be used. For integer equivalent rates unnecessary source pixels are just skipped. For non-integer rates the source image is bilinear interpolated. nRate must be > 1.0F and <= 10.0F.

Returns

Type	Description
NppStatus	StepError, NotEvenStepError, NullPointerError, AlignmentError, StepError, SizeError

nppiGetFilterGaussPyramidLayerUpBorderDstROI(Int32, Int32, ref NppiSize, ref NppiSize, Single)

Calculate destination image minimum and maximum SizeROI width and height from source image ROI width and height and upsampling rate. It is highly recommended that this function be use to determine the best destination image ROI for consistent results.

Declaration

public static NppStatus nppiGetFilterGaussPyramidLayerUpBorderDstROI(int nSrcROIWidth, int nSrcROIHeight, ref NppiSize pDstSizeROIMin, ref NppiSize pDstSizeROIMax, float nRate)

Parameters

Type	Name	Description
System.Int32	nSrcROIWidth	The desired source image ROI width, must be <= oSrcSize.width.
System.Int32	nSrcROIHeight	The desired source image ROI height, must be <= oSrcSize.height.
NppiSize	pDstSizeROIMin	Host memory pointer to the minimum recommended destination image roi_specification.
NppiSize	pDstSizeROIMax	Host memory pointer to the maximum recommended destination image roi_specification.
System.Single	nRate	The upsampling rate to be used. For integer equivalent rates unnecessary source pixels are just skipped. For non-integer rates the source image is bilinear interpolated. nRate must be > 1.0F and <= 10.0F.

Returns

Type	Description
NppStatus	StepError, NotEvenStepError, NullPointerError, AlignmentError, StepError, SizeError