topology_signature — 3D medial op

• Data kinds: voxel → table

• Call: import medial; medial.topology_signature(skeleton) (or ops3d.get("topology_signature"))

Usage

Build a topology descriptor from the 26-neighbourhood degrees of a skeleton. Returns the counts of end points, junctions, ordinary points and isolated points.

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)

• medial_topology — py -3.11 examples_3d/medial_topology.py

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

fuse_to_voxel · mesh_select_lod

Same category (medial)

distance_ridge · skeletonize_vol · medial_axis_points · medial_match · skeleton_junctions3d · skeleton_endpoints3d · skeleton_prune3d · skeleton_branches3d

*Provenance: medial.py — 3D 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.