cutout — 3D `augment` op

• Data kinds: points → points

• Call: import fullseye as fs; fs.ledger.cutout(points, extent: 'Union[float, np.ndarray]', seed: 'int' = 0) -> 'Tuple[np.ndarray, np.ndarray]' (to call the implementation directly, import pcl_augment; pcl_augment.cutout(points, extent: 'Union[float, np.ndarray]', seed: 'int' = 0) -> 'Tuple[np.ndarray, np.ndarray]'; from the registry, ops3d.get("cutout"))

• Return value through the ledger: fullseye.ledger.cutout(...) returns **only the declared out type points** (the underlying function also returns auxiliary values). When you need what was dropped, use fullseye.ledger.cutout.raw(...) or call pcl_augment.cutout directly.

Usage

Remove an axis-aligned box region in space and return `(kept, kept_idx)` (mimicking a local dropout).

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

既存の点を 1 つ一様サンプルして中心とし、辺長 `extent`(スカラ=立方体, または

`(3,)`=各軸辺長)のボックス内の点をすべて除去する。中心点自身が必ず入るため

最低 1 点は除去される。除去点は必ず辺長 `extent` のボックスに収まる(空間的に

局所的 = ランダム散布とは判別可能)。`kept == points[kept_idx]、extent > 0`。

`extent に正でない値や (3,) 以外の形を渡すと ValueError`。空入力は空と空

インデックスを返す。中心は `rng.integers(n) で選ぶ点なので、seed` が同じでも点の

並びが変わると別の場所が抜ける。ボックス判定は `|P - center| <= extent/2` の閉区間。

除去点数は密度次第で、`extent` を雲の大きさより大きくすると全点が消える。返り値は

`(kept float64 (M,3), kept_idx int64 (M,))`、順序は元のまま。一様な欠損は

`random_dropout`。

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)

• sensor_seg — py -3.11 examples_3d/sensor_seg.py

Ops the type connects to (they accept `points` as input)

points_to_voxel · gaussians_to_voxel · estimate_point_normals · to_points · match_points_ncc · match_pca · moment_axes · icp_point2point_3d

Same category (`augment`)

jitter · random_rotation · random_scale · random_dropout · elastic_deform

*Provenance: pcl_augment.py — 3D operator registry. This per-op note is generated by tools/opdocs.py md (do not hand-edit).*

cutout — 3D augment op