morph_tophat3d — 3D morphology op

• Data kinds: voxel → voxel

• Call: import match3d; match3d.morph_tophat3d(vol, r=1, device='cpu', se='cube') (or ops3d.get("morph_tophat3d"))

• GPU: this op has a GPU path (device="cuda")

Usage

3-D white top-hat = vol − opening. Extracts the bright structures smaller than the structuring element (keypoint pre-processing).

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)

• diff_features — py -3.11 examples_3d/diff_features.py

• morphology_3d — py -3.11 examples_3d/morphology_3d.py

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

voxel_to_mips · voxel_to_mesh · signed_distance_field · to_points · sobel3d · hessian3d · curvature_maps · edt_jfa

Same category (morphology)

morph_dilate3d · morph_erode3d · morph_open3d · morph_close3d · morph_gradient3d · morph_blackhat3d

*Provenance: match3d.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.