pegsym op• Data kinds: scalar × scalar × scalar → table
• Call: import fullseye as fs; fs.ledger.spiral_search_points(pitch: 'float', step: 'float', r_max: 'float', centre=(0.0, 0.0)) -> 'dict' (to call the implementation directly, import pegsym; pegsym.spiral_search_points(pitch: 'float', step: 'float', r_max: 'float', centre=(0.0, 0.0)) -> 'dict'; from the registry, opsdrive.get("spiral_search_points"))
Search points for lateral offset: an Archimedean spiral r = p φ/(2π), sampled every arc length step [m] (from the center) up to radius r_max. Spacing to the adjacent turn = pitch. If c is the radius the chamfer captures, p ≤ 2c and step ≤ 2c cover without gaps (the worst distance of a point between adjacent turns, √((p/2)² + (s/2)²) ≤ c, is a sufficient condition; returned as worst_gap). Returns points (N, 2), worst_gap and n. Raises ValueError: pitch, step or r_max ≤ 0, more than 200,000 points.
• 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.
• poc_peg_symmetry_search — py -3.11 examples/poc_peg_symmetry_search.py
table as input)course_layout · course_occupancy · course_contains · world_build · world_camera · world_move · lidar_scan · rss_longitudinal_same
pegsym)polygon_peg · polygon_offset · polygon_fit_check · rotation_window · polygon_two_point_depth · polygon_coverage_image · plane_topview · polygon_yaw_read
*Provenance: pegsym.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.