radon_volume — TOMOGRAPHY volume op

• データ種: voxel → sinostack

• 呼び出し: import tomography; tomography.radon_volume(volume, angles_deg=None, n_detectors=None, oversample=1) (または opstomography.get("radon_volume"))

使い方

Project every slice of a `(Z, H, W) volume -> a (Z, A, D)` stack.

Parallel-beam geometry with the rotation axis along `Z`, which is the case

where the 3-D problem really is a stack of independent 2-D ones — each slice

projects into its own sinogram and nothing crosses between them. (A cone beam

does not have this property and is not implemented; saying so is cheaper than

a wrong `FDK`.)

The output's axis order is `(slice, angle, detector) so that stack[k]`

is a sinogram in this module's own convention and every 2-D operator here

applies to it unchanged.

:param volume: `(Z, H, W) float volume, Z >= 1`.

:param angles_deg: view angles; `None -> uniform [0, 180)`, 180 views.

:param n_detectors: bins; `None` -> covers the in-plane diagonal.

:param oversample: ray samples per pixel, `1 .. 8`.

:returns: `(Z, n_angles, n_detectors)` float64 stack.

:raises ValueError: on a non-3-D input or a stack over

:data:MAX_STACK_ELEMENTS.

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。

• アルゴリズムの正典(著者・年)と用途は上記ファミリ使い方ガイドに記載。

実行できる例(この op を実際に呼ぶ検証済みサンプル)

• tomography_reconstruct — py -3.11 examples/tomography_reconstruct.py

型が繋がる次の op(sinostack を入力に取れる)

fbp_volume

同カテゴリ(volume)

fbp_volume

*Provenance: tomography.py — TOMOGRAPHY 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.