fullseye

smallest_sphere3 — 3D geometry op

• データ種: points → primitive
• 呼び出し: import fullseye as fs; fs.ledger.smallest_sphere3(points) -> 'dict' (実装を直接呼ぶなら import measure3d; measure3d.smallest_sphere3(points) -> 'dict'、台帳から引くなら ops3d.get("smallest_sphere3"))

使い方

Minimum enclosing sphere of (depth, row, col) points (Welzl’s exact

algorithm on the convex hull). Returns center (cd/cr/cc) and radius r — the smallest sphere that contains every point. This is the 3-D smallest_circle; its radius is strictly below the AABB-diagonal sphere on any non-spherical set, and equals the true radius for points on a sphere. Raises ValueError on empty input.

参考(サンプルデータ・文献)

• サンプルデータ カタログ(DL URL / ライセンス) — 2-D は skimage.data(BSD/public)+ 合成、3-D は実データ源(Stanford/PDS 等)の DL URL。
• 演算子の来歴・参考文献 — この op 族の元になった研究/手法の出典。

実行できる例(この op を実際に呼ぶ検証済みサンプル)

• primitive_fitting_3d — py -3.11 examples_3d/primitive_fitting_3d.py

型が繋がる次の op(primitive を入力に取れる)

fuse_to_voxel · angle_between_lines · angle_between_planes · angle_line_plane · distance_point_plane · distance_point_line · distance_line_line · distance_segment_segment

同カテゴリ(geometry)

line_from_2points · plane_from_3points · angle_3points · angle_between_lines · angle_between_planes · angle_line_plane · distance_point_plane · distance_point_line

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Provenance: measure3d.py — 3D operator registry. この per-op ノートは tools/opdocs.py md が自動生成(手編集しない)。

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

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