lf_all_in_focus — LIGHTFIELD `depth` op

• 資料種類:lightfield × image2d → image2d

• 呼叫:import lightfield; lightfield.lf_all_in_focus(lf, slope_map, levels=None, *, n_levels=16, interp='linear', edge='nearest')(或 opslightfield.get("lf_all_in_focus"))

用法

讓每個像素按各自的斜率重聚焦,合成一張處處清晰的圖。

> 以下的詳細說明為原文 —— 摘要與標題已翻譯。

Builds a focal stack at *levels* and, for every pixel, takes the slice whose

level is closest to `slope_map` there. This is the "2-D image" half of what

a plenoptic camera delivers, at the full depth range rather than the depth of

field of one focus setting.

*levels* controls which refocus planes are actually rendered, and the

`None` default has two documented branches — a continuous slope map has

one distinct value per pixel, and rendering a refocus plane for each of

those would be tens of thousands of full-frame shifts:

• if *slope_map* holds at most *n_levels* distinct values (the case when

it came from :func:lf_depth_from_focus with `subpixel=False`), those

exact values are used and the composite is exact;

• otherwise the map's range is quantised to *n_levels* evenly spaced

planes (default 16), which is a real approximation: a pixel whose true

slope falls between two planes is refocused at the nearer one. Pass

*levels* explicitly — e.g. the sweep you handed

:func:lf_depth_from_focus — when that matters.

Returns a `(H, W)` 2-D image.

Raises `ValueError`: *lf* not a valid light field, a *slope_map* that

is not 2-D / not `(H, W)` / non-finite, *levels* empty or over the stack

caps, *n_levels* outside `[1, MAX_STACK_SLICES]`, unknown *interp* /

*edge*.

詳細使用指南

• lightfield_depth 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)

• lightfield_depth — py -3.11 examples/lightfield_depth.py

型別可銜接的下一個運算子(可接受 `image2d` 作為輸入)

lf_from_mla · lf_disparity_to_depth

同類別(`depth`)

lf_depth_from_focus · lf_epi_slope · lf_disparity_to_depth · lf_plenoptic_design

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

lf_all_in_focus — LIGHTFIELD depth op

用法