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description: Learn how to register custom event-tracking and track predictions with Ultralytics YOLO via on_predict_start and register_tracker methods. |
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keywords: Ultralytics YOLO, tracker registration, on_predict_start, object detection |
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## on_predict_start |
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### ::: ultralytics.tracker.track.on_predict_start |
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## on_predict_postprocess_end |
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### ::: ultralytics.tracker.track.on_predict_postprocess_end |
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<br><br> |
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## register_tracker |
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### ::: ultralytics.tracker.track.register_tracker |
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<br><br> |
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