morphology op• Data kinds: voxel → voxel
• Call: import fullseye as fs; fs.ledger.morph_open3d(vol, r=1, device='cpu', se='cube') (to call the implementation directly, import match3d; match3d.morph_open3d(vol, r=1, device='cpu', se='cube'); from the registry, ops3d.get("morph_open3d"))
• GPU: this op has a GPU path (device="cuda")
3-D opening = erosion → dilation. Removes the bright structures (spikes and grains) smaller than the structuring element.
morph_dilate3d(morph_erode3d(vol, r, ...), r, ...), the same SE applied 2 times. The output is at most the input (open <= vol): bright protrusions, isolated points and thin bridges into which the SE (a cube of side length 2r+1 or a ball of radius r) does not fit vanish, while the shape of large structures is preserved (idempotent: applying it 2 times gives the same result). r is in voxel units, se is "cube"/"ball" (anything else: ValueError), device is effective only for cube+torch. Returns (D,H,W) float32 numpy.
Use: vol − open is morph_tophat3d (extracting small bright structures). Removing isolated noise points in point-density voxels, removing thin lines in 2-valued occupancy.
• 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.
• morphology_3d — py -3.11 examples_3d/morphology_3d.py
voxel as input)voxel_to_mips · voxel_to_mesh · signed_distance_field · to_points · sobel3d · hessian3d · curvature_maps · edt_jfa
morphology)morph_dilate3d · morph_erode3d · morph_close3d · morph_gradient3d · morph_tophat3d · 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.