Compute_KContrast  108 modules/features2d/src/kaze/KAZEFeatures.cpp         Compute_KContrast(evolution_[0].Lt, options_.kcontrast_percentille);
Compute_KContrast   55 modules/features2d/src/kaze/KAZEFeatures.h     void Compute_KContrast(const cv::Mat& img, const float& kper);