image_derivatives_scharr  134 modules/features2d/src/kaze/AKAZEFeatures.cpp     image_derivatives_scharr(evolution_[i].Lsmooth, evolution_[i].Lx, 1, 0);
image_derivatives_scharr  135 modules/features2d/src/kaze/AKAZEFeatures.cpp     image_derivatives_scharr(evolution_[i].Lsmooth, evolution_[i].Ly, 0, 1);
image_derivatives_scharr   34 modules/features2d/src/kaze/nldiffusion_functions.h void image_derivatives_scharr(const cv::Mat& src, cv::Mat& dst, int xorder, int yorder);