reg_erode — 2D `region` op

• Data kinds: region → region

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

• HALCON equivalent: erosion_circle (the HALCON reference is a useful guide to its meaning and parameters)

reg_erode: 入力 → 出力

*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).*

Usage

Binary erosion of a region. Equivalent to HALCON's `erosion_circle` (Erode a region with a circular structuring element.).

> The detailed description below is the original text — the summary and the headings are translated.

`a が反復回数を 1〜4（_it(a)）に振る。b は未使用。構造要素は scipy.ndimage.binary_erosion の既定（十字形、4近傍相当）で、HALCON の円形構造要素とは形が異なる（近似）。入力は v > 0.5` で二値化してから処理する。

Detailed usage guide

• gallery2d_region 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.

Try it in Studio

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.

threshold 0.50 0.50
reg_erode 0.50 0.50

▸ Load this pipeline · Load & run

Runnable examples (verified samples that actually call this op)

• gallery2d_region — py -3.11 examples/gallery2d_region.py

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

identity · reg_dilate · reg_open · reg_close · fill_holes · select_largest · remove_small · invert_region

Same category (`region`)

reg_dilate · reg_open · reg_close · fill_holes · select_largest · remove_small · invert_region · dist_transform

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

reg_erode — 2D region op