iss_keypoints — 3D `feature_register` op

• Data kinds: points → indices

• Call: import feat_shot; feat_shot.iss_keypoints(points, radius, nms_radius=None, gamma21=0.99, gamma32=0.99, max_kp=400, min_neighbors=8) (or ops3d.get("iss_keypoints"))

Usage

ISS (Intrinsic Shape Signatures, the 3-D Harris equivalent) keypoint detection.

Background guides (the physics and conventions behind this op)

• blas_threads_and_memory — 行列分解が遅い理由の知識 — BLAS スレッド・キャッシュ・メモリ配置

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)

• feature_register — py -3.11 examples_3d/feature_register.py

Ops the type connects to (they accept `indices` as input)

fuse_to_voxel

Same category (`feature_register`)

harris3d_keypoints · compute_fpfh · shot_descriptor · register_spin · register_fpfh · register_shot

*Provenance: feat_shot.py — 3D operator registry. This per-op note is generated by tools/opdocs.py md (do not hand-edit).*

iss_keypoints — 3D feature_register op