vol_hessian_blobness — 3D feature op

• データ種: voxel → voxel

• 呼び出し: import fullseye as fs; fs.ledger.vol_hessian_blobness(vol, scale, black_ridges=False) (実装を直接呼ぶなら import volops; volops.vol_hessian_blobness(vol, scale, black_ridges=False)、台帳から引くなら ops3d.get("vol_hessian_blobness"))

使い方

Blob-like (spherical) response from the Hessian eigenvalues at one *scale*.

A bright blob has all three eigenvalues negative and comparable in magnitude;

the response is the geometric mean of their magnitudes,

`(|l1| |l2| |l3|)**(1/3)`, gated to voxels where the three share the sign of

a blob of the requested polarity (all negative for bright, all positive for

dark). Normalised to `[0, 1]`. Complements the line filters — a Frangi-style

`Rb` term rejects blobs, this one keeps them. Reference: the second-order

(Hessian) blob measure, cf. Frangi et al. 1998 / Lindeberg scale-space blobs.

参考(サンプルデータ・文献)

• サンプルデータ カタログ(DL URL / ライセンス) — 2-D は skimage.data(BSD/public)+ 合成、3-D は実データ源(Stanford/PDS 等)の DL URL。

• 演算子の来歴・参考文献 — この op 族の元になった研究/手法の出典。

実行できる例(この op を実際に呼ぶ検証済みサンプル)

• vessel_metrology — py -3.11 examples_3d/vessel_metrology.py

型が繋がる次の op(voxel を入力に取れる)

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

同カテゴリ(feature)

sobel3d · hessian3d · curvature_maps · edt_jfa · vol_frangi · vol_local_std · vol_local_thickness · vol_orientation_coherence

*Provenance: volops.py — 3D operator registry. この per-op ノートは tools/opdocs.py md が自動生成(手編集しない)。*

© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.