tb_plane_segmentation — 2D typed op

Data kinds: pointsvolume

Call: fullseye.apply(img, "tb_plane_segmentation", a=0.5, b=0.5) (the 2-D model is one image plus two scalar knobs a,b∈[0,1])

Usage

Iteratively extracts up to max_planes planes via repeated RANSAC (remaining residual points are -1).

> The detailed description below is the original text — the summary and the headings are translated.

残り点集合に :func:ransac_fit.ransac_plane を掛け、その最大 consensus 平面の

inlier 数が `min_inliers` 以上なら新ラベルを与えて除去 → 残りで再検出、を繰り返す。

複数の床/壁/階段状の面を一度に分離する(単一平面適合の pcseg との差)。inlier が

`min_inliers` に満たなくなった時点で停止し、以降の点は残差 -1(球や複雑物体はここに残る)。

Args:

points: (N,3) 点群。

thresh: 点-平面距離の inlier しきい値(距離、要 > 0)。

min_inliers: 平面として採用する最小 inlier 数(要 >= 3)。

max_planes: 抽出する平面の最大枚数(要 >= 1)。

iters: 各 RANSAC 反復数。

seed: 乱数シード(決定論。各平面で seed+平面index を使う)。

Returns:

labels: (N,) int。検出順(=consensus 大きい順に近い)に 0,1,2,... を平面へ付与、

どの平面にも属さない残差点は -1。空入力は shape (0,)。

2-D 進化レジストリへ橋渡しした 3d の op `plane_segmentation。実装は同じで、呼び出し規約だけ op(v, a, b) に合わせてある。amax_planes(既定 5)、biters`(既定 300)を振る。

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.

Runnable examples (verified samples that actually call this op)

• (none yet)

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

identity · vol_gaussian · vol_median · vol_erode · vol_dilate · vol_threshold · vol_reg_dilate · vol_reg_erode

Same category (typed)

tb_points_to_voxel · tb_estimate_point_normals · tb_iss_keypoints · tb_angle_3points · tb_project_points · tb_render_point_depth · tb_statistical_outlier_removal · tb_radius_outlier_removal


*Provenance: ops.py — 2D 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.