openCV issue with new cv version

[AxelCORNILLEAU]

catkin_ws/src/cam_lidar_calibration/include/cam_lidar_calibration/optimiser.h:10:10: fatal error: opencv/cv.hpp: No such file or directory
10 | #include <opencv/cv.hpp>
| ^~~~~~~~~~~~~~~
compilation terminated.

Solution :
in optimiser .h just change line 10

// #include <opencv/cv.hpp>
#include <opencv2/opencv.hpp>

and in optimiser.cpp change line 427 :
cv::reduce(trans_diff, summed_diff, 1, cv::REDUCE_SUM, CV_64F);