tracker update empty list with yolov5 about norfair

[joaqo]

hi @jbottala02 draw_tracked_objects currently doesn't support setting a class_id. A workaround would be to use a different color for each class, though I understand thats not ideal.

[joaqo]

For some reason the tacker is not able to track onto any objects. This could happen for a ton of reasons, incorrect distance function or threshold, or bad detections. You can draw your detections on your video and see how they look to start debugging.

[joaqo]

We just merged a fix to the Yolov5 demo, so it may help you #78

[jbottala02]

hello @joaqo , I'm thankful for this awesome library. I have some newb questions about how to integrate the class label ID to norfair.draw_tracked_objects to display it on the frame? I've tried the yolov5 demo example and I wonder how to display the class ID and tracking ID at the same time. As I read the docu, the Detection class has a data attribute that stores additional data, and I think the scores and the class ID were stored there.

[jbottala02]

It's ok now, I found out how. Anyways, I really appreciate your reply and thanks for this library. I want to view the class_id because there were sudden changes with tracking_ID. I speculate that there is something wrong with Yolov5's classifying objects that cause these sudden tracking ID changes. https://ibb.co/bJvcjSp