bounce_detect — DRIVE balltrack op

• Data kinds: signal × signal → table

• Call: import fullseye as fs; fs.ledger.bounce_detect(t, z, *, min_gap: 'int' = 2) -> 'dict' (to call the implementation directly, import balltrack; balltrack.bounce_detect(t, z, *, min_gap: 'int' = 2) -> 'dict'; from the registry, opsdrive.get("bounce_detect"))

Usage

Extracts contact candidates from a height sequence z(t): local minima where the downward velocity turns upward (minimum over min_gap samples before and after). Return value {"index" (M,), "t" (M,), "z" (M,)}.

References (sample data, literature)

• Sample-data catalog (download URLs / licences) — 2-D uses skimage.data (BSD/public domain) plus synthetic images; 3-D lists download URLs for real data sources (Stanford, PDS, …).

• Operator provenance and references — the sources of the research/methods this op family came from.

• The canonical algorithm (author, year) and its uses are named in the family usage guide above.

Runnable examples (verified samples that actually call this op)

• poc_ball_bounce — py -3.11 examples/poc_ball_bounce.py

• poc_table_tennis_bounce — py -3.11 examples/poc_table_tennis_bounce.py

• poc_table_tennis_spin — py -3.11 examples/poc_table_tennis_spin.py

Ops the type connects to (they accept table as input)

course_layout · course_occupancy · course_contains · world_build · world_camera · world_move · lidar_scan · rss_longitudinal_same

Same category (balltrack)

ball_detect · ball_track · kalman_ca · triangulate_dlt · track_triangulate · marker_direction · spin_from_markers · spin_from_marker_sequence

*Provenance: balltrack.py — DRIVE operator registry. This per-op note is generated by tools/opdocs.py md (do not hand-edit).*

© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.