voronoi_cells — SEGMENTATION world op

• Data kinds: points → table

• Call: import fullseye as fs; fs.ledger.voronoi_cells(seeds, size) -> 'Dict[str, object]' (to call the implementation directly, import segworld; segworld.voronoi_cells(seeds, size) -> 'Dict[str, object]'; from the registry, opssegmentation.get("voronoi_cells"))

Usage

Voronoi partition of seeds inside a rectangle, returned as polygons with areas and internal edge lengths (brute-force half-planes, O(n^2)) (voronoi_cells).

Returns: polygons (list of polygons, each (k, 2) [y, x]), areas (shoelace), edge_length_total (sum of internal edge lengths), n_edges (number of internal edges), perimeter_internal (n,) (internal edge length of each cell).

Detailed usage guide

• halcon_segmentation family guide

Background guides (the physics and conventions behind this op)

• segmentation_scoring_and_worlds — Scoring segmentations and synthetic worlds with ground truth — which metric is blind to which failure

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.

• The canonical algorithm (author, year) and its uses are named in the family usage guide above.

Runnable examples (verified samples that actually call this op)

• (none yet)

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

class_ndim_norm

Same category (world)

world_blobs_touching · world_grains_voronoi · world_parts_with_shadow · world_texture_regions · world_gradient_illumination · world_thin_structures · lens_area

*Provenance: segworld.py — SEGMENTATION 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.