ct_scan op• 資料種類:projstack × ctgeometry → voxel
• 呼叫: import fullseye as fs; fs.ledger.ct_adjoint_project(projections, geometry, device='auto')(要直接呼叫實作,import ctscan; ctscan.ct_adjoint_project(projections, geometry, device='auto');從台帳取用則 opstomography.get("ct_adjoint_project"))
• GPU:無(僅 CPU 參考實作)
ct_forward_project 的精確轉置 A^T。
> 以下的詳細說明為原文 —— 摘要與標題已翻譯。
<A x, y> = <x, A^T y> holds to rounding, on every scan. This is what an iterative solver needs; it is not the reconstruction fdk_reconstruct does.
:param projections: (view, V, U) array. :param geometry: dict from ct_scan_geometry. :param device: "auto", "cpu" or "cuda". :returns: (Z, Y, X) float volume. :raises ValueError: on a shape that disagrees with the geometry. Empty input
(projections with 0 elements) raises ValueError.
• 範例資料目錄(下載 URL / 授權) —— 2-D 用 skimage.data(BSD/公有領域)加合成圖,3-D 給出真實資料源(Stanford/PDS 等)的下載 URL。
• 運算子來歷與參考文獻 —— 該運算子族所依據的研究/方法出處。
• 演算法的正典(作者、年份)與用途見上面的族使用指南。
• ct_scan_modes — py -3.11 examples/ct_scan_modes.py
• poc_ct_casting_sparse_views — py -3.11 examples/poc_ct_casting_sparse_views.py
• poc_real_walnut_cbct — py -3.11 examples/poc_real_walnut_cbct.py
voxel 作為輸入)radon_volume · ct_forward_project
ct_scan)ct_scan_geometry · shepp_logan_3d · ellipsoid_phantom · ellipsoid_projections · ct_forward_project · fdk_reconstruct · sirt_reconstruct · os_sart_reconstruct
*Provenance: ctscan.py — TOMOGRAPHY 運算子登記表。本條目由 tools/opdocs.py md 自動產生(請勿手動編輯)。*
© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.