kalidr :Compilation failure

[zw-nuist-176]

Some problems occurred during compilation. 1、sudo pip install python-igraph --upgrade

Can you solve this problem by entering such content：sudo pip3 install python-igraph --upgrade ？

2、when"catkin build -DCMAKE_BUILD_TYPE=Release -j4"，Some problems occurred。

I hope you can teach me how to solve these problems? Thank you for your help.

[Ceopee]

I recommend you to use python3 instead of python 2.8. Maybe this causes the failure. Check pip list too see installed packages. Maybe there is related module that you need to delete. For the 2nd problem, it looks like a namespace issue with OpenCV. You only need cv::namespace to related lines. Change lines 305/306:

    m_cap.set(cv::CAP_PROP_FRAME_WIDTH, m_width);
    m_cap.set(cv::CAP_PROP_FRAME_HEIGHT, m_height);

and line 383: cv::cvtColor(image, image_gray, cv::COLOR_BGR2GRAY);

[zw-nuist-176]

@Ceopee Thank you for your help, I'll give it a try. Thank you for your answer.

[zw-nuist-176]

@Ceopee Sorry to disturb you again because of my work. I follow your suggestions and links. After the implementation, there are still errors. The green suggested namespace appears when the error is reported. After my operation (final modification, as shown in Figure 1 and Figure 2), the previous problems are solved, but new problems appear (as shown in Figure 3 and Figure 4). It makes me feel at a loss. Yes, please help me solve the problem again and successfully install kalibr. Thank you very much!

Wish you a happy weekend!

[Ceopee]

They all have the same namespace or Opencv C Api issues. I guess you can ignore the warnings and notes. For the errors, just go to related file(read red lines) like GridCalibrationTargetCheckboard, GridDetector etc. change stated lines. With the same behavior that we did previously, you can make some changes like here CV_FONT_HERSHEY_SIMPLEX to cv::FONT_HERSHEY_SIMPLEX. I am not going to look into all these errors. You can basically find the related conversions.

Read the error output. It gives the clue then make some search 🎉

[Tsingkai]

Do you solve these problems? I meet these peoblems, too. Ubuntu 20.04 LTS Refer to https://blog.csdn.net/hanyeguxingwo/article/details/121293315?spm=1001.2014.3001.5501, I solved many problems like changing CV_FONT_HERSHEY_SIMPLEX to cv::FONT_HERSHEY_SIMPLEX,but nothing to instead CvSize…… Thx!

[zw-nuist-176]

@Tsingkai Your question ,I read someone else's post,may be the version problem.But it don't uninstall ,reinstall. I don‘t do more work.Because I find a lot of work to do if modify the OpenCV code to adapt constantly. There are so many bugs ,I'm going to calibrate the camera in different way.if you have a better solution ,please let me know.

[Tsingkai]

https://github.com/ori-drs/kalibr Checkout this repository，I replaced all files that had errors during compilation, and then I succeeded. It fixes all syntax problems, opencv and python3.

[zw-nuist-176]

@Tsingkai Really good. I will practice it when I have time.

[Tsingkai]

new problem,maybe two version code caused

File "kalibr_workspace/devel/bin/kalibr_calibrate_cameras", line 15, in <module>
    exec(compile(fh.read(), python_script, 'exec'), context)
  File "kalibr_workspace/src/Kalibr/aslam_offline_calibration/kalibr/python/kalibr_calibrate_cameras", line 10, in <module>
    import kalibr_camera_calibration as kcc
  File "kalibr_workspace/devel/lib/python3/dist-packages/kalibr_camera_calibration/__init__.py", line 34, in <module>
    exec(__fh.read())
  File "<string>", line 2, in <module>
  File "kalibr_workspace/devel/lib/python3/dist-packages/numpy_eigen/__init__.py", line 34, in <module>
    exec(__fh.read())
  File "<string>", line 3, in <module>
ModuleNotFoundError: No module named 'libnumpy_eigen'

[zw-nuist-176]

@Tsingkai so many bugs need to do. @_@`害

[FrozenSmile]

pip uninstall igraph sudo apt-get install python-igraph

[goldbattle]

Hi please try PR https://github.com/ethz-asl/kalibr/pull/515 to see if that solves your issue.