geom_transform op• Datenarten: voxel → voxel
• Aufruf: import fullseye as fs; fs.ledger.vol_affine(vol, matrix, offset=(0, 0, 0), order=1, output_shape=None, mode='constant', cval=0.0) (die Implementierung direkt: import volxform; volxform.vol_affine(vol, matrix, offset=(0, 0, 0), order=1, output_shape=None, mode='constant', cval=0.0); aus dem Register: ops3d.get("vol_affine"))
Allgemeines affines Resampling (scipy.ndimage.affine_transform).
> Die ausführliche Beschreibung unten ist der Originaltext — Zusammenfassung und Überschriften sind übersetzt.
Convention (pinned — read this before writing a matrix): this is scipy's pull (output -> input) resampler. For every output voxel at integer coordinate o = (z, y, x) the result is the input interpolated at matrix @ o + offset::
out[o] = vol[ matrix @ o + offset ] # (z, y, x) order, voxels
Consequences: matrix = 2*I makes the object appear half size (each output step strides two input voxels); offset = (1, 2, 3) moves the object by (-1, -2, -3). To *push* content through a forward transform T (the pose from a registration), pass the inverse of T. The test suite machine-pins this direction.
*matrix* is either a (3, 3) linear part (with *offset* a separate length-3 translation) or a (4, 4) homogeneous matrix [[A, t], [0, 0, 0, 1]] — then A / t are taken from the matrix, the bottom row must be exactly (0, 0, 0, 1), and *offset* must stay at its zero default (a second translation would be ambiguous). Any other shape raises ValueError.
*output_shape* defaults to the input shape; an explicit one is cap-checked against MAX_VOXELS before allocation. *order* is the spline degree (exact integer 0..5). Voxels whose source coordinate falls outside the input are filled per *mode*/*cval*.
Returns a float64 volume of *output_shape*.
• Katalog der Beispieldaten (Download-URLs / Lizenzen) — 2-D nutzt skimage.data (BSD/Public Domain) plus synthetische Bilder, 3-D nennt Download-URLs echter Datenquellen (Stanford, PDS, …).
• Herkunft und Literatur der Operatoren — die Quellen der Forschung/Verfahren, auf denen diese Operatorfamilie beruht.
• vol_geometry_transform — py -3.11 examples_3d/vol_geometry_transform.py
voxel als Eingabe)voxel_to_mips · voxel_to_mesh · signed_distance_field · to_points · sobel3d · hessian3d · curvature_maps · edt_jfa
geom_transform)*Provenance: volxform.py — 3D Operator-Registry. Diese Notiz wird von tools/opdocs.py md erzeugt (nicht von Hand bearbeiten).*
© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.