NVIDIA 2D Image And Signal Performance Primitives (NPP)  Version 11.7.1.*
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Functions
FilterThresholdAdaptiveBoxBorder

Computes the average pixel values of the pixels under a square mask with border control. More...

Functions

NppStatus nppiFilterThresholdAdaptiveBoxBorder_8u_C1R_Ctx (const Npp8u *pSrc, Npp32s nSrcStep, NppiSize oSrcSize, NppiPoint oSrcOffset, Npp8u *pDst, Npp32s nDstStep, NppiSize oSizeROI, NppiSize oMaskSize, Npp32f nDelta, Npp8u nValGT, Npp8u nValLE, NppiBorderType eBorderType, NppStreamContext nppStreamCtx)
 Single channel 8-bit unsigned threshold adaptive box filter with border control. More...
 
NppStatus nppiFilterThresholdAdaptiveBoxBorder_8u_C1R (const Npp8u *pSrc, Npp32s nSrcStep, NppiSize oSrcSize, NppiPoint oSrcOffset, Npp8u *pDst, Npp32s nDstStep, NppiSize oSizeROI, NppiSize oMaskSize, Npp32f nDelta, Npp8u nValGT, Npp8u nValLE, NppiBorderType eBorderType)
 

Detailed Description

Computes the average pixel values of the pixels under a square mask with border control.

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. Once the neighborhood average around a source pixel is determined the souce pixel is compared to the average - nDelta and if the source pixel is greater than that average the corresponding destination pixel is set to nValGT, otherwise nValLE.

Currently only the NPP_BORDER_REPLICATE border type operation is supported.

Parameters
pSrcSource-Image Pointer.
nSrcStepSource-Image Line Step.
oSrcSizeSource image width and height in pixels relative to pSrc.
oSrcOffsetThe pixel offset that pSrc points to relative to the origin of the source image.
pDstDestination-Image Pointer.
nDstStepDestination-Image Line Step.
oSizeROIRegion-of-Interest (ROI).
oMaskSizeWidth and Height of the neighborhood region for the local Avg operation, Width and Height must be equal and odd.
nDeltaNeighborhood average adjustment value
nValGTDestination output value if source pixel is greater than average.
nValLEDestination output value if source pixel is less than or equal to average.
eBorderTypeThe border type operation to be applied at source image border boundaries.
nppStreamCtxApplication Managed Stream Context.
Returns
Image Data Related Error Codes, ROI Related Error Codes

Function Documentation

NppStatus nppiFilterThresholdAdaptiveBoxBorder_8u_C1R ( const Npp8u pSrc,
Npp32s  nSrcStep,
NppiSize  oSrcSize,
NppiPoint  oSrcOffset,
Npp8u pDst,
Npp32s  nDstStep,
NppiSize  oSizeROI,
NppiSize  oMaskSize,
Npp32f  nDelta,
Npp8u  nValGT,
Npp8u  nValLE,
NppiBorderType  eBorderType 
)
NppStatus nppiFilterThresholdAdaptiveBoxBorder_8u_C1R_Ctx ( const Npp8u pSrc,
Npp32s  nSrcStep,
NppiSize  oSrcSize,
NppiPoint  oSrcOffset,
Npp8u pDst,
Npp32s  nDstStep,
NppiSize  oSizeROI,
NppiSize  oMaskSize,
Npp32f  nDelta,
Npp8u  nValGT,
Npp8u  nValLE,
NppiBorderType  eBorderType,
NppStreamContext  nppStreamCtx 
)

Single channel 8-bit unsigned threshold adaptive box filter with border control.


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