gen_region_polygon_xld — 2D `contour` op

• Data kinds: contour → region

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

• HALCON equivalent: gen_region_polygon_xld (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.

XLD 輪郭（多角形の頂点列）を region（画素マスク）へ変換する。輪郭点を最近傍画素に打点したのち、`1+2a` 回の二値膨張（dilation）で線を太らせて連結させる。b は未使用。

HALCON の `gen_region_polygon_xld`（XLD 多角形の内部を塗りつぶした region を生成する演算）とは異なり、この実装は多角形の内部を塗りつぶすのではなく、輪郭線そのものを膨張させて太らせるだけの近似 —— 閉じていない輪郭や自己交差する輪郭では本来の内部塗りつぶしと結果が食い違う。

Detailed usage guide

• gallery2d_contour_measure 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_contour_measure — py -3.11 examples/gallery2d_contour_measure.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 (`contour`)

select_contours · smooth_contours · fit_line_contours · contours_to_region · sk_find_contours · edges_sub_pix · lines_gauss · select_contours_xld

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

gen_region_polygon_xld — 2D contour op