lf_all_in_focus — LIGHTFIELD `depth` op

• データ種: lightfield × image2d → image2d

• 呼び出し: import lightfield; lightfield.lf_all_in_focus(lf, slope_map, levels=None, *, n_levels=16, interp='linear', edge='nearest') (または opslightfield.get("lf_all_in_focus"))

使い方

Composite one everywhere-sharp image by refocusing each pixel at its own slope.

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*.

詳しい使い方ガイド

• lightfield_depth ファミリガイド

参考(サンプルデータ・文献)

• サンプルデータカタログ(DL URL / ライセンス) — 2-D は skimage.data(BSD/public)+ 合成、3-D は実データ源(Stanford/PDS 等)の DL URL。

• 演算子の来歴・参考文献 — この op 族の元になった研究/手法の出典。

• アルゴリズムの正典(著者・年)と用途は上記ファミリ使い方ガイドに記載。

実行できる例(この op を実際に呼ぶ検証済みサンプル)

• lightfield_depth — py -3.11 examples/lightfield_depth.py

型が繋がる次の op(`image2d` を入力に取れる)

lf_from_mla · lf_disparity_to_depth

同カテゴリ(`depth`)

lf_depth_from_focus · lf_epi_slope · lf_disparity_to_depth · lf_plenoptic_design

*Provenance: lightfield.py — LIGHTFIELD operator registry. この per-op ノートは tools/opdocs.py md が自動生成(手編集しない)。*

lf_all_in_focus — LIGHTFIELD depth op

使い方