thresh_trunc_func  584 modules/core/include/opencv2/core/cuda/functional.hpp     template <typename T> struct thresh_trunc_func : unary_function<T, T>
thresh_trunc_func  725 modules/cudev/include/opencv2/cudev/functional/functional.hpp __host__ __device__ ThreshTruncFunc<T> thresh_trunc_func(T thresh)