TraceAnnotator fails when there are no detections present due to IndexError about supervision HOT 7 CLOSED

Hi @mgithinji 👋🏻, we updated this code yesterday. I'll take a look.

from supervision.

Thanks for taking this on @SkalskiP!

from supervision.

Also having this problem. I noticed that this happens when there is no person being detected in the video.

File "C:\Users\Dennis\miniconda3\envs\PCEE\Lib\site-packages\supervision\detection\tools\smoother.py", line 80, in update_with_detections
tracker_id = detections.tracker_id[detection_idx]
~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^
IndexError: index 0 is out of bounds for axis 0 with size 0

from supervision.

Hi @mgithinji 👋🏻, I managed to reproduce the bug. I'll do my best to solve this problem.

from supervision.

@mgithinji I did two things:

• updated example code and replaced sv.calculate_dynamic_line_thickness and sv.calculate_dynamic_text_scale with sv.calculate_optimal_line_thickness and sv.calculate_optimal_text_scale respectively
• released a new pre-release version supervision-0.21.0rc1 that at least during my tests worked

could you test it?

pip uninstall supervision
pip install supervision==0.21.0rc1

from supervision.

@SkalskiP that worked! 😁 I'm guessing you fixed the issue in the new supervision release. Thanks for covering this issue!

from supervision.

Wonderful! In that case, I'm closing this issue. For the time being (until supervision-0.21.0 release) the solution is to run examples with supervision==0.21.0rc1.

from supervision.