segment op• Data kinds: image → region
• Call: fullseye.apply(img, "sg_region_growing_seeded", a=0.5, b=0.5) (the 2-D model is one image plus two scalar knobs a,b∈[0,1])
*The figure is the real output on a synthetic 128×128 input. Left: input, right: output (a non-image return value is shown as the value itself).*
Seeded region growing that starts from the image centre and connects pixels with similar intensity (HALCON `regiongrowing is already covered by another op, so halcon=""` is used here to avoid double-reporting it).
> The detailed description below is the original text — the summary and the headings are translated.
種は画像中心の 1 画素。`a（0〜1）が同質性の許容差（種の輝度 ±a 以内なら繋がる）、b が連結性を切り替える（b > 0.5` で 8 連結、それ以外は 4 連結）。結果は種を含む連結成分のみ。
• gallery2d_segmentation family guide
• 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.
The program below has been verified to run (same input as the figure). In Studio's help this block becomes buttons that load and run it on the spot.
sg_region_growing_seeded 0.50 0.50
▸ Load this pipeline · Load & run
• gallery2d_segmentation — py -3.11 examples/gallery2d_segmentation.py
region as input)identity · reg_erode · reg_dilate · reg_open · reg_close · fill_holes · select_largest · remove_small
segment)sg_slic_superpixels · sg_felzenszwalb · sg_gmm_segment · sg_kmeans_intensity · sg_normalized_cut_2 · sg_watershed_gradient
*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.