OpenCV uses NPP library for some functions. But it is hard to create a compelete list of such functions.
Some functions uses only NPP implemetation (boxFilter
, graphcut
, histEven
).
Other functions uses different implemetations for different input parameters. For example, cv::gpu::resize
uses NPP for some input parameters (CV_8UC1
and CV_8UC3
types, INTER_NEAREST
and INTER_LINEAR
interpolation mode) and for other parameters it uses own implementation.