MinMaxReductor    320 modules/cudev/include/opencv2/cudev/grid/detail/reduce.hpp     template <class Op, typename src_type, typename work_type> struct MinMaxReductor
MinMaxReductor    350 modules/cudev/include/opencv2/cudev/grid/detail/reduce.hpp     template <typename src_type, typename work_type> struct MinMaxReductor<both, src_type, work_type>