getGradient        50 modules/core/src/conjugate_gradient.cpp     void MinProblemSolver::Function::getGradient(const double* x, double* grad)
getGradient        79 modules/core/test/test_conjugate_gradient.cpp     void getGradient(const double* x,double* grad){
getGradient       485 modules/photo/src/tonemap.cpp     void getGradient(Mat src, Mat& dst, int pos)