annotate_scale_bar_layout — ANNOTATE paper op

Data kinds: nonetable (an op determined by its arguments alone — it takes no image or data input)

Call: import annotate; annotate.annotate_scale_bar_layout(shape, units_per_pixel, unit='µm', corner='rb', target_fraction=0.2, margin=14, thickness=5) (or opsannotate.get("annotate_scale_bar_layout"))

Usage

Returns a table (dict): a bar of a round length, at most `target_fraction` of the image width.

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

長さは `1/2/5 × 10^k のうち target_fraction * W * units_per_pixel` 以下の

最大値。画素長 = `round(length / units_per_pixel)`。

Returns

-------

dict

`{"length","px","rect":(x,y,w,h),"unit","corner","label"}`。

Raises

------

ValueError

units_per_pixel / target_fraction が非正、未知の corner、

バーが 1 画素未満か画像に収まらない。

Detailed usage guide

figure_annotation family guide

Background guides (the physics and conventions behind this op)

dataset_conventions — 学習データセット規約の知識 — COCO / YOLO / VOC と外観検査での落とし穴

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)

paper_figurepy -3.11 examples/paper_figure.py

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

Same category (paper)

annotate_leader_layout · annotate_leader · annotate_markers · annotate_legend · annotate_dimension_layout · annotate_dimension · annotate_angle_layout · annotate_angle


*Provenance: annotate.py — ANNOTATE 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.