alpha_shape_boundary — 3D `reconstruct` op

• Data kinds: points → indices

• Call: import recon3d; recon3d.alpha_shape_boundary(points, alpha) (or ops3d.get("alpha_shape_boundary"))

Usage

The indices of the boundary points by alpha shapes (point set → boundary points).

Background guides (the physics and conventions behind this op)

• blender_interop — Blender との併用 — 形を作って fullseye で測る(軸・単位・正解データの罠)

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)

• sfm_recon — py -3.11 examples_3d/sfm_recon.py

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

fuse_to_voxel

Same category (`reconstruct`)

poisson_lite · alpha_shape_mesh · estimate_alpha

*Provenance: recon3d.py — 3D operator registry. This per-op note is generated by tools/opdocs.py md (do not hand-edit).*

alpha_shape_boundary — 3D reconstruct op