rot_scale_to_matrix — REPRCONV algebra op

Data kinds: rot_scalematrix

Call: import reprconv; reprconv.rot_scale_to_matrix(rot_scale) (or opsreprconv.get("rot_scale_to_matrix"))

Usage

`(angle [deg], scale) → a 2-D similarity matrix (2,2). The exit from rot_scale`.

> The detailed description below is the original text — the summary and the headings are translated.

`match_logpolar_z` が返す 2-tuple をそのまま行列にする。

:func:matrix_to_rot_scale と往復して実測 max|Δ| = 2.8e-14(角度は度、倍率は無次元)。

Args:

rot_scale: 長さ 2 の列 `(angle_deg, scale)`。scale > 0。

Returns:

(2, 2) float64。

Raises:

ValueError: 長さが 2 でない / scale <= 0 / 非有限。

References (sample data, literature)

• Sample-data catalog (download URLs / licences) — 2-D uses skimage.data (BSD/public domain) plus synthetic images; 3-D lists download URLs for real data sources (Stanford, PDS, …).

• Operator provenance and references — the sources of the research/methods this op family came from.

• The canonical algorithm (author, year) and its uses are named in the family usage guide above.

Runnable examples (verified samples that actually call this op)

representation_conversionpy -3.11 examples/representation_conversion.py

Ops the type connects to (they accept matrix as input)

matrix_to_descriptor · matrix_to_angle · matrix_to_rot_scale

Same category (algebra)

angle_to_matrix · matrix_to_angle · matrix_to_rot_scale · shift_to_vector · vector_to_shift · cscalar_to_polar · polar_to_cscalar · countrate_to_counts


*Provenance: reprconv.py — REPRCONV operator registry. This per-op note is generated by tools/opdocs.py md (do not hand-edit).*

© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.