macro_edge — 2D macro op

Data kinds: imageregion

Call: fullseye.apply(img, "macro_edge", a=0.5, b=0.5) (the 2-D model is one image plus two scalar knobs a,b∈[0,1])

macro_edge: 入力 → 出力

*The figure is the real output on a synthetic 128×128 input. Left: input, right: output (a non-image return value is shown as the value itself).*

Usage

A fixed pipeline discovered by evolutionary search: `gamma(a=0.39,b=0.94)bilateral(a=0.22,b=0.08)sobel_mag(a=0.81,b=0.80)scale_clip(a=1.00,b=0.90)otsu(a=0.78,b=0.93)` (5 stages: gamma correction → smoothing → gradient magnitude → scaling → binarization by Otsu's method).

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

`a, b` は凍結済みで未使用。edge 課題(F1)でロック済みホールドアウト0.91、手作りベースライン 0.77 を上回る。出力は image ではなく region(二値マスク)。HALCON に対応する単一オペレータは無い。

Detailed usage guide

gallery2d_physics_alife_3d family guide

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.

Try it in Studio

The program below has been verified to run (same input as the figure). In Studio's help this block becomes buttons that load and run it on the spot.

macro_edge 0.50 0.50

▸ Load this pipeline  ·  Load & run

Runnable examples (verified samples that actually call this op)

gallery2d_physics_alife_3dpy -3.11 examples/gallery2d_physics_alife_3d.py

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

identity · reg_erode · reg_dilate · reg_open · reg_close · fill_holes · select_largest · remove_small

Same category (macro)

macro_denoise · macro_binarize · macro_vol_denoise


*Provenance: ops.py — 2D 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.