vol_erode — 2D `3d` op

• Data kinds: volume → volume

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

*No figure: this op takes volume as input. A Studio program starting from an image cannot reach that type — see the runnable examples below for how it is used.*

Usage

Grayscale erosion of a 3D volume. No corresponding HALCON op is specified.

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

構造要素の一辺は `size = 1 + 2*(1 + int(a))。a は [0,1) の範囲では int(a) が常に 0 になるため実質サイズ 3 固定で、a が 1.0（decode の np.clip で上限に張り付いたとき）になったときだけ 5 に切り替わる、実質 2 値スイッチにしかなっていない（_vol_dilate も同じ式で同じ性質）。b` も未使用。

Detailed usage guide

• gallery2d_physics_alife_3d 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_physics_alife_3d — py -3.11 examples/gallery2d_physics_alife_3d.py

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

identity · vol_gaussian · vol_median · vol_dilate · vol_threshold · vol_reg_dilate · vol_reg_erode · vol_dilation_ball

Same category (`3d`)

vol_gaussian · vol_median · vol_dilate · vol_threshold · vol_reg_dilate · vol_reg_erode · vol_dilation_ball · vol_erosion_ball

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

vol_erode — 2D 3d op