Issue with visualising keypoints

[EricLWJ]

Hi, I am currently trying to visualise the keypoints and center points using the python3 -m datasets.linemod.linemod_dataset.py as suggested. The results with this code on the public LINEMOD dataset is not as discribed. I did not edit original linemod_dataset.py code for the visualisation, but my result lacks the background image of the scene as shown below. Is there a possible reason for this? Thank you.