normal_error_map — DRIVE tacscalib op

• Data kinds: normalmap × normalmap → image2d

• Call: import fullseye as fs; fs.ledger.normal_error_map(n_a, n_b) -> 'np.ndarray' (to call the implementation directly, import tacscalib; tacscalib.normal_error_map(n_a, n_b) -> 'np.ndarray'; from the registry, opsdrive.get("normal_error_map"))

Usage

> This operator's description has not been translated yet. The original text follows as it is.

2 つの法線場の画素ごとの角度 [度] = atan2(|a × b|, a · b)(正規化しない —— 長さは atan2 の比で消える)。

acos(a · b) は単位ベクトルの近くで丸めの床を持つ(1e-7° を 1e-4° と答える)ので使わない。

Raises `ValueError`: 形が違う / 最後の軸が 3 でない。

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 image2d as input)

flow_from_depth_motion · ttc_truth · ttc_from_flow · foe_from_flow · perlin2 · fbm_height · fbm_gradient · radial_periodogram

Same category (tacscalib)

calib_pack_load · sphere_normals_known · lights_fit_from_sphere · membrane_predict_rgb · gradient_lut_build · gradient_lut_invert · 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.