xmh_soft — 2D intensity-transform op

• Data kinds: image → image

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

Usage

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

ソフト閾値処理(`mahotas.thresholding.soft_threshold`、シュリンケージ)。閾値未満の絶対値を持つ画素を 0 に潰し、それ以外は閾値分だけ 0 に近づける。ウェーブレット/スパース信号のノイズ除去でよく使う処理を画素値に直接適用する。

`a は閾値(a*0.5 で 0〜0.5)を振る。b` は未使用。

Detailed usage guide

• gallery2d_gray_arith 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_gray_arith — py -3.11 examples/gallery2d_gray_arith.py

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

identity · gaussian · mean_box · bilateral · unsharp · median · min_filter · max_filter

Same category (intensity-transform)

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*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.