‘REDUCE_SUM’ is not a member of ‘cv’

[zhixun25]

/home/z/c/my_ws/build/dlib_catkin/dlib_src-prefix/src/dlib_src/src/DVision/HSolver.cpp: In member function ‘cv::Mat DVision::HSolver::findHomography(const cv::Mat&, const cv::Mat&, double, int, std::vector, bool, double, int) const’: /home/z/c/my_ws/build/dlib_catkin/dlib_src-prefix/src/dlib_src/src/DVision/HSolver.cpp:144:35: error: ‘REDUCE_SUM’ is not a member of ‘cv’ cv::reduce(sq_ab, error, 0, cv::REDUCE_SUM); // 0 = single row ^ /home/z/c/my_ws/build/dlib_catkin/dlib_src-prefix/src/dlib_src/src/DVision/FSolver.cpp: In member function ‘cv::Mat DVision::FSolver::findFundamentalMat(const cv::Mat&, const cv::Mat&, double, int, std::vector, bool, double, int) const’: /home/z/c/my_ws/build/dlib_catkin/dlib_src-prefix/src/dlib_src/src/DVision/FSolver.cpp:149:35: error: ‘REDUCE_SUM’ is not a member of ‘cv’ cv::reduce(sq_ab, norms, 0, cv::REDUCE_SUM); // 0 = single row ^ /home/z/c/my_ws/build/dlib_catkin/dlib_src-prefix/src/dlib_src/src/DVision/FSolver.cpp:160:32: error: ‘REDUCE_SUM’ is not a member of ‘cv’ cv::reduce(prod, dot, 0, cv::REDUCE_SUM); // dot is Nx1 ^ make[5]: [CMakeFiles/DLib.dir/src/DVision/HSolver.cpp.o] Error 1 make[5]: Waiting for unfinished jobs.... make[5]: [CMakeFiles/DLib.dir/src/DVision/FSolver.cpp.o] Error 1 make[4]: [CMakeFiles/DLib.dir/all] Error 2 make[3]: [all] Error 2 make[2]: [dlib_src-prefix/src/dlib_src-stamp/dlib_src-build] Error 2 make[1]: [CMakeFiles/dlib_src.dir/all] Error 2 make: [all] Error 2

Is this the wrong version of OpenCV? I've used opencv 2.4.11 and 2.4.8 before. It's all this error.

[rocker12121]

How did you solve this error. Can you please guide.