sk_yen — 2D `segmentation` op

• Data kinds: image → region

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

• HALCON equivalent: binary_threshold (the HALCON reference is a useful guide to its meaning and parameters)

Usage

> This operator's description has not been translated yet. The original text follows as it is.

Yen の最大相関基準(maximum correlation criterion)による大域しきい値二値化。ヒストグラムのエントロピーベースの評価量を最大化してしきい値を選ぶ、大津法・Li 法とはまた別の自動しきい値法。

HALCON の binary_threshold に相当(近似)。実装は `v > filters.threshold_yen(v)` —— a, b は未使用。同じ画像に大津/Li/Yen を並べて試し、しきい値が安定する方を選ぶ用途を想定。

Detailed usage guide

• gallery2d_segmentation 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.

Runnable examples (verified samples that actually call this op)

• gallery2d_segmentation — py -3.11 examples/gallery2d_segmentation.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 (`segmentation`)

threshold · otsu · canny · adaptive_gauss_thresh · sk_otsu · sk_li · sk_sauvola · sk_niblack

*Provenance: ops.py — 2D operator registry. This per-op note is generated by tools/opdocs.py md (do not hand-edit).*

sk_yen — 2D segmentation op