vol_local_maxima — 3D feature op

• データ種: voxel → points

• 呼び出し: import fullseye as fs; fs.ledger.vol_local_maxima(vol, min_distance, threshold=None) (実装を直接呼ぶなら import volops; volops.vol_local_maxima(vol, min_distance, threshold=None)、台帳から引くなら ops3d.get("vol_local_maxima"))

使い方

3-D local-maxima (peak) detection.

A voxel is a peak if it equals the maximum over a cubic neighbourhood of

half-width `min_distance (side 2*min_distance + 1`) and that

neighbourhood is not flat (its max strictly exceeds its min, so a constant

region yields no peaks). Pass *threshold* to additionally require

`vol >= threshold` (drop weak peaks in noise).

Returns an `(N, 3) int array of (z, y, x)` peak coordinates. Uses only

`scipy.ndimage.maximum_filter / minimum_filter` (no skimage).

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)

• molecule_atom_count — py -3.11 examples_3d/molecule_atom_count.py

• vessel_metrology — py -3.11 examples_3d/vessel_metrology.py

型が繋がる次の op(points を入力に取れる)

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

同カテゴリ(feature)

sobel3d · hessian3d · curvature_maps · edt_jfa · vol_frangi · vol_local_std · vol_local_thickness · vol_orientation_coherence

*Provenance: volops.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.