poissonSolver      72 modules/photo/src/seamless_cloning.hpp             void poissonSolver(const cv::Mat &img, cv::Mat &gxx , cv::Mat &gyy, cv::Mat &result);
poissonSolver     322 modules/photo/src/seamless_cloning_impl.cpp         poissonSolver(output[chan], rgbx_channel[chan], rgby_channel[chan], output[chan]);