calculation time and method used in npp box filter

[YRstronger]

hi,
i am start using cuda to do some image processing task. I am interested in the method implemented in npp box filter. Because i found it calculate too long (3ms, 1024*1024,radius 6) , but when i used seperate filter method provided in _Imaging/boxFilter, which only cost averagely 0.7ms to do the same thing,
Is npp boxfilter not a seperate filter method? Or the texture use lead to the improvement?
looking forward to answer！ thanks

[maheshkha]

Hi,
Sample example _Imaging/boxFilter - used 2D filtering type.
You can explore the other NPP API to make the example separable filter capabilities Column Filter and Row Filter.
Currently NPP API does not use Texture memory.

NPP Image filter using Gaussian filter kernel

Hope this will help.

[YRstronger]

thanks for your reply! that's exactly the difference of those two functions.
I will close this issue soon!