alife_dla — 2D artificial-life op

• 資料種類:image → image

• 呼叫:fullseye.apply(img, "alife_dla", a=0.5, b=0.5)(2-D 的模型是一張圖 + 兩個純量旋鈕 a,b∈[0,1])

用法

確定性擴散限制凝聚(diffusion-limited aggregation, DLA)生長近似。

> 以下的詳細說明為原文 —— 摘要與標題已翻譯。

Witten-Sander DLA grows a cluster by releasing random walkers that stick on

contact; the walker density obeys a Laplace equation, so this op replaces the

random walkers by their *deterministic* mean field: the unclaimed image

brightness is diffused with a Gaussian Green's function to give a

concentration u, and each generation the cluster's Moore boundary attaches

exactly those cells whose concentration clears a stickiness threshold

(with the single strongest boundary cell always attaching, so growth never

stalls). Bright pixels (>= 0.75 of the image maximum, or the single brightest

pixel) are the seed. `a` sets the number of growth generations

1 + int(11a), `b` the stickiness: high b selects only the highest-

concentration tips (dendritic, screened growth), low b attaches nearly the

whole boundary (compact, Eden-like growth). Returns the 0/1 cluster.

詳細使用指南

• gallery2d_physics_alife_3d 族使用指南

參考(範例資料・文獻)

• 範例資料目錄(下載 URL / 授權) —— 2-D 用 skimage.data(BSD/公有領域)加合成圖,3-D 給出真實資料源(Stanford/PDS 等)的下載 URL。

• 運算子來歷與參考文獻 —— 該運算子族所依據的研究/方法出處。

• 演算法的正典(作者・年份)與用途見上面的族使用指南。

可執行的範例(實際呼叫該運算子並已驗證的樣例)

• gallery2d_physics_alife_3d — py -3.11 examples/gallery2d_physics_alife_3d.py

• sim2real_and_alife — py -3.11 examples/sim2real_and_alife.py

型別可銜接的下一個運算子(可接受 image 作為輸入)

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

同類別(artificial-life)

alife_gray_scott · alife_turing · alife_life_step · alife_cyclic_ca · alife_perona_malik · alife_curvature_flow · alife_reaction_bz · alife_wolfram1d

*Provenance: ops.py — 2D 運算子登記表。本條目由 tools/opdocs.py md 自動產生(請勿手動編輯)。*

© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.