Error when running the quick start

[juannn01]

Hi! I am facing an error when running the calibration process using the quick-start data provided. A snapshot of the error is shown below. Look forward for your reply! Thanks in advance! (Additional information: ROS Noetic, Ubuntu 20.04)

[YHuniv]

This resolved my problem, because i am using opencv 4.2.0 : change #include <opencv/cv.hpp> to #include <opencv2/opencv.hpp> in optimiser.h. (/catkin_ws/src/cam_lidar_calibration/include/cam_lidar_calibration/optimiser.h) and change optimiser.cpp:
from // cv::reduce(trans_diff, summed_diff, 1, CV_REDUCE_SUM, CV_64F);

// to cv::reduce(trans_diff, summed_diff, 1, cv::REDUCE_SUM, CV_64F);

(/catkin_ws/src/cam_lidar_calibration/src/optimiser.cpp)

[jclinton830]

@YHuniv thanks for your input to the issue.

If that does not work, please feel free to reopen this issue. I am closing it as done for now.

[natik-bw]

Reopening this topic, as the solution didn't resolve my error.

• I am using ros-noetic, with Opencv-4.5.5 (due to other project dependencies)
• Changing #include <opencv/cv.hpp>' to '#include <opencv2/opencv.hpp> in optimiser.h. didn't resolve the problem, since it caused the following error when executing catkin build:

I was able to successfully build when I replaced `#include <opencv/cv.hpp>' to:

#include <opencv2/core/core.hpp>
#include <opencv2/imgcodecs.hpp>
#include <opencv2/calib3d.hpp>

But then, still got the same runtime error when executing the quick start roslaunch cam_lidar_calibration run_optimiser.launch import_samples:=true

logs rosout-1-stdout.log rosout.log roslaunch-netanel-Precision-5560-26735.log master.log

NOTE I don't know if this is correct, but I used the calib_v2 branch, and there cv::reduce(...) under optimiser.cpp here was not commented out (all I had to do was replace CV_REDUCE_SUM by cv::REDUCE_SUM for proper compatibility), so I wasn't sure whether I missed an additional change I had to do. It wasn't clear to me from @YHuniv 's instructions.