Decrease default confidence threshold to start tracking new tracks (#17172)

Co-authored-by: Glenn Jocher <glenn.jocher@ultralytics.com>
Co-authored-by: Burhan <62214284+Burhan-Q@users.noreply.github.com>
Co-authored-by: Ultralytics Assistant <135830346+UltralyticsAssistant@users.noreply.github.com>

ultralytics/cfg/trackers/botsort.yaml

@@ -2,9 +2,9 @@
 # Default YOLO tracker settings for BoT-SORT tracker https://github.com/NirAharon/BoT-SORT
 
 tracker_type: botsort # tracker type, ['botsort', 'bytetrack']
-track_high_thresh: 0.5 # threshold for the first association
+track_high_thresh: 0.25 # threshold for the first association
 track_low_thresh: 0.1 # threshold for the second association
-new_track_thresh: 0.6 # threshold for init new track if the detection does not match any tracks
+new_track_thresh: 0.25 # threshold for init new track if the detection does not match any tracks
 track_buffer: 30 # buffer to calculate the time when to remove tracks
 match_thresh: 0.8 # threshold for matching tracks
 fuse_score: True # Whether to fuse confidence scores with the iou distances before matching

ultralytics/cfg/trackers/bytetrack.yaml

@@ -2,9 +2,9 @@
 # Default YOLO tracker settings for ByteTrack tracker https://github.com/ifzhang/ByteTrack
 
 tracker_type: bytetrack # tracker type, ['botsort', 'bytetrack']
-track_high_thresh: 0.5 # threshold for the first association
+track_high_thresh: 0.25 # threshold for the first association
 track_low_thresh: 0.1 # threshold for the second association
-new_track_thresh: 0.6 # threshold for init new track if the detection does not match any tracks
+new_track_thresh: 0.25 # threshold for init new track if the detection does not match any tracks
 track_buffer: 30 # buffer to calculate the time when to remove tracks
 match_thresh: 0.8 # threshold for matching tracks
 fuse_score: True # Whether to fuse confidence scores with the iou distances before matching