Median Filter function in NPP CUDA 4.0

Accelerated Computing CUDA CUDA Programming and Performance
1

Hello,

Does function nppiFilterMedian_8u_C1R for Median rank filter exist in NPP (CUDA 4.0, Win 7)?
NPP Manual say:

Image Rank Filters
Min, Median, and Max image filters.
• NppStatus nppiFilterMax_8u_C1R (const Npp8u pSrc, Npp32s nSrcStep, Npp8u pDst, Npp32s
nDstStep, NppiSize oSizeROI, NppiSize oMaskSize, NppiPoint oAnchor)
8-bit unsigned maximum filter.
• NppStatus nppiFilterMax_8u_C4R (const Npp8u pSrc, Npp32s nSrcStep, Npp8u pDst, Npp32s
nDstStep, NppiSize oSizeROI, NppiSize oMaskSize, NppiPoint oAnchor)
4 channel 8-bit unsigned maximum filter.
• NppStatus nppiFilterMin_8u_C1R (const Npp8u pSrc, Npp32s nSrcStep, Npp8u pDst, Npp32s
nDstStep, NppiSize oSizeROI, NppiSize oMaskSize, NppiPoint oAnchor)
8-bit unsigned minimum filter.
• NppStatus nppiFilterMin_8u_C4R (const Npp8u pSrc, Npp32s nSrcStep, Npp8u pDst, Npp32s
nDstStep, NppiSize oSizeROI, NppiSize oMaskSize, NppiPoint oAnchor)
4 channel 8-bit unsigned minimum filter.

Compiling with nppiFilterMedian_8u_C1R fucntion produce error, there is not such func.
Maybe I don’t undestand how to use existing funcs to get median filter…(

Any help is appreciated!)

UPD:
Seems this is the median filter):

7.10.2.3 NppStatus nppiFilterBox_8u_C1R (const Npp8u pSrc, Npp32s nSrcStep, Npp8u pDst,
Npp32s nDstStep, NppiSize oSizeROI, NppiSize oMaskSize, NppiPoint oAnchor)

8-bit unsigned box filter.

Computes the average pixel values of the pixels under a rectangular mask.

Topic closed.

2

This is a mean filter, but not median filter.

I can’t find median filter in npp documents, even they mention on the chapter abstract.

3

Sorry for the confusion. The documentation is misleading here in that it mentions median in the overview. There is no median filter in NPP at this point.