domain op• 数据种类:voxel → voxel
• 调用: import fullseye as fs; fs.ledger.vol_tiled_map(vol, fn, tile=64, overlap=8)(要直接调用实现,import volops; volops.vol_tiled_map(vol, fn, tile=64, overlap=8);从台账取用则 ops3d.get("vol_tiled_map"))
把形状不变的体算子分成重叠 z 板块施加,以压低峰值占用。
> 以下的详细说明为原文 —— 摘要与标题已翻译。
working memory is bounded by the slab — not the volume.
The third leg of the memory family: :func:vol_crop_domain shrinks *where*
you compute, :mod:volregion shrinks *what you keep*, and this bounds *how
much lives in RAM at once*. Each slab `vol[z0-overlap : z1+overlap]` is
run through *fn* and only the core `[z0:z1)` of the result is kept, so a
volume far above an operator's comfortable size streams through in
constant-memory pieces (measured: peak working set of a Gaussian drops with
the slab size while the output stays exact — see the test).
Correctness contract (the honest part): the result equals `fn(vol)`
exactly only for *local* operators whose spatial footprint along z is at
most *overlap* voxels on each side (a Gaussian of sigma s with scipy's
default truncation needs `overlap >= round(4 * s)`; a morphology with a
k-voxel structuring element needs `overlap >= k`). A *global* operator
(Otsu, normalisation, anything that looks at the whole histogram) is
silently WRONG under tiling — this function cannot detect that, so it is
documented instead: do not tile global operators.
Parameters: *fn* is any callable mapping a `(d, H, W)` float64 volume to
an array of the same shape (e.g. `lambda v: vol_gradient_magnitude(v)`).
*tile* is the slab thickness (>= 1), *overlap* the per-side context
(>= 0). A slab result of the wrong shape raises `ValueError` immediately
(fail-closed — a shape-changing fn would silently corrupt the assembly).
• 示例数据目录(下载 URL / 许可证) —— 2-D 用 skimage.data(BSD/公有领域)加合成图,3-D 给出真实数据源(Stanford/PDS 等)的下载 URL。
• 算子来历与参考文献 —— 该算子族所依据的研究/方法出处。
• rle_region_efficiency — py -3.11 examples_3d/rle_region_efficiency.py
voxel 作为输入)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_crop_domain · vol_uncrop
*Provenance: volops.py — 3D 算子登记表。本条目由 tools/opdocs.py md 自动生成(请勿手工编辑)。*
© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.