cam2lidar No module named img_to_grid
I want to calibrate one camera from a stereo camera system with a Lidar. I followed the cam2lidar calibration tutorial. I didn't use a Conda environment (because the roslaunch step didn't work with it), I installed the requirements from requirements.txt on the local machine. When I start the calibration with roslaunch cam2lidar geometric.launch I get an error which says: No module named 'img_to_grid'. This import fails in line 16 of the geometric_calibration.py file. So I thought that I may can install it by myself but unlucky me there seems to be no Python module with that name. How can I fix this issue?
I deleted my answer because the Readme specifically targets a docker container, which means it won't break your main ros install like I was concerned about.