calib_pack_load — DRIVE tacscalib op

• Data kinds: text × scalar × scalar → table

• Call: import fullseye as fs; fs.ledger.calib_pack_load(path: 'str', pitch_mm: 'float', ball_radius_mm: 'float') -> 'dict' (to call the implementation directly, import tacscalib; tacscalib.calib_pack_load(path: 'str', pitch_mm: 'float', ball_radius_mm: 'float') -> 'dict'; from the registry, opsdrive.get("calib_pack_load"))

Usage

Calibration pack (npz) → dict. The keys f0 (background (H, W, 3) uint8), imgs ((N, H, W, 3)), touch_center ((N, 2) = (column x, row y)) and touch_radius ((N,) px) are required; the centers are reordered to (row, column) and returned as centers.

pitch_mm [mm/px] and ball_radius_mm are supplied by the caller (they are not in the pack). Returns: f0, imgs, centers (N, 2), radii (N,) [px], pitch (m/px), pitch_mm, R_mm, R_px (= radius / pitch), n. The caller builds the data location from an environment variable (e.g. FULLSEYE_TAXIM_DATA).

Raises ValueError: missing key (including misspellings) / shape mismatch / 0 images / non-finite centre / radius ≤ 0 / pitch or ball radius ≤ 0. FileNotFoundError: path does not exist.

Empty input (path as an empty string) raises ValueError.

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_tacscalib_sphere_lut — py -3.11 examples/poc_tacscalib_sphere_lut.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 (tacscalib)

sphere_normals_known · lights_fit_from_sphere · membrane_predict_rgb · gradient_lut_build · gradient_lut_invert · normal_error_map · sphere_cap_height · field_position_sweep

*Provenance: tacscalib.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.