median_weighted — 2D `rank` op

• Data kinds: image → image

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

• HALCON equivalent: median_weighted (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.

中央値フィルタ（median filter）。実装は eliminate_min_max/median_image と同じ `_sh_rank` の median 分岐で、円形・八角形などマスク形状ごとの重み付けは行わず、正方形窓の単純な中央値を返す。a が窓サイズを 3/5/7/9 に振り、b は未使用。

HALCON の `median_weighted`（円・矩形・八角形など複数のマスクで重み付き中央値フィルタを行う演算）の代役だが、実装は重みなしの通常の中央値フィルタで、マスク形状の違いは再現しない。

Detailed usage guide

• gallery2d_smoothing_rank 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_smoothing_rank — py -3.11 examples/gallery2d_smoothing_rank.py

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

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

Same category (`rank`)

median · min_filter · max_filter · percentile · sk_median_disk · cv_median · median_image · median_rect

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

median_weighted — 2D rank op