abs_image — 2D `arithmetic` op

• Data kinds: image → image

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

• HALCON equivalent: abs_image (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.

画素値の絶対値を取る(`np.abs)。fullseye の image` は既に [0,1] 契約

(非負)なので、通常の画像に対しては何も変えない恒等写像として働く。差分

画像など符号つきの中間結果を直接渡したときだけ意味を持つ。HALCON の

`abs_image`（Calculate the absolute value (modulus) of an image.）の代役。

`a, b は未使用。clip 前の生値 v にそのまま abs` を掛けている点に

注意(他の pointwise 分岐は `x = clip(v,0,1) を使うが、この分岐だけ v`

を直接見る)。

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 (`arithmetic`)

sqrt_image · exp_image · log_image · sin_image · cos_image · asin_image · acos_image · atan_image

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

abs_image — 2D arithmetic op