scene_flow_lk — 3D motion op

• Data kinds: voxel × voxel → flow_dense

• Call: import match3d; match3d.scene_flow_lk(vol0, vol1, device='cpu', win=3, levels=3, iters=3, reg=0.001) (or ops3d.get("scene_flow_lk"))

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

Usage

Lucas-Kanade scene flow (the 3-D version of 2-D optical flow). A per-voxel motion field d = (dz, dy, dx).

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)

• motion_scene — py -3.11 examples_3d/motion_scene.py

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

fuse_to_voxel

Same category (motion)

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*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.