11:07 to 12:07 of hhaWMwLlugE, 1799 frames at 1280x720
Proxy: in each frame with a ball detection (YOLO COCO 'sports ball'), the team of the nearest player (foot point) within 3 player-heights owns the ball; frames without a ball inherit the last owner for up to 1 s, otherwise count as unresolved. Ball nearest a goalkeeper/other-kit player counts as unresolved. Ball detected in 76% of frames.
No homography. Player foot-point tracks in image pixels, camera pan removed by global phase correlation, smoothed (9-frame mean), steps faster than 0.5 frame-widths/s dropped. Metres = pixels / (frame width / 25 m), i.e. assumes the visible pitch width is 25 m and ignores zoom and perspective. Expect ±50%.
Positions are in the camera's view, not on the pitch: the camera pans to follow play, so left and right are edges of the frame, not ends of the pitch.
A-1
A-5
A-4
A-2
A-6
A-3
A-11
A-7
A-8
A-10
A-9
B-2
B-1
B-4
B-3
B-5
O-1
O-2
O-5
O-4
O-3Identity is capped by the footage: this pipeline resolved 21 stable identities; on the reference night slice it found ~23 stable vs ~14–16 true players. Team-level stats do not depend on perfect identity.
Pipeline footyviz 0.2.0; detector yolo11m.pt (ultralytics 8.4.174); tracker ByteTrack (supervision 0.30.9); re-ID BoT-SORT + OSNet x1_0 msmt17 (boxmot 16.0.11); vision-LLM off. Run time 56 s for 1 min of footage.