Nld_Step_Scalar_Invoker  347 modules/features2d/src/kaze/nldiffusion_functions.cpp     Nld_Step_Scalar_Invoker(cv::Mat& Ld, const cv::Mat& c, cv::Mat& Lstep, float _stepsize)
Nld_Step_Scalar_Invoker  407 modules/features2d/src/kaze/nldiffusion_functions.cpp     cv::parallel_for_(cv::Range(1, Lstep.rows - 1), Nld_Step_Scalar_Invoker(Ld, c, Lstep, stepsize), (double)Ld.total()/(1 << 16));