domain op• データ種: voxel → voxel
• 呼び出し: import fullseye as fs; fs.ledger.vol_crop_domain(vol, domain=None, margin=0) (実装を直接呼ぶなら import volops; volops.vol_crop_domain(vol, domain=None, margin=0)、台帳から引くなら ops3d.get("vol_crop_domain"))
• 台帳経由の戻り値: fullseye.ledger.vol_crop_domain(...) は宣言 out 型 voxel の値だけを返す(本体は補助情報も返す)。捨てられた側が要るときは fullseye.ledger.vol_crop_domain.raw(...)、または volops.vol_crop_domain を直接呼ぶ。
• 本体の返り: (part, offset)
Crop a volume to the tight bounding box of a domain (HALCON crop_domain).
This is the memory lever of the domain family: a 512**3 CT scan whose part of interest fits in 128**3 costs 64x less memory and compute once cropped — and the Hessian operators (vol_frangi / vol_sato), capped at MAX_EIGEN_VOXELS, often become *possible* only after this step. Gray values inside the box are kept verbatim (the box, not the mask, defines the crop — pair with vol_reduce_domain first if voxels outside the mask but inside the box must read 0).
*domain* defaults to the volume's own non-zero support (vol != 0 — a gray volume is cropped to wherever it has any signal; note this differs from the > 0.5 convention used when an explicit binary *domain* is passed). *margin* is forwarded to vol_bounding_box.
Returns (cropped, offset) — the (d, h, w) float64 sub-volume and the (z0, y0, x0) voxel offset of its origin in the input frame. Keep the
offset: vol_uncrop maps results back, and vol_boundary_points accepts it as *origin* so point coordinates stay in the uncropped frame. An empty domain raises ValueError (fail-closed).
• 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。
• roi_domain_boundary — py -3.11 examples_3d/roi_domain_boundary.py
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
domain)vol_reduce_domain · vol_bounding_box · vol_uncrop · vol_tiled_map
*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.