fullseye

lf_all_in_focus — LIGHTFIELD `depth` op

データ種: lightfield × image2d → image2d
呼び出し: import fullseye as fs; fs.ledger.lf_all_in_focus(lf, slope_map, levels=None, *, n_levels=16, interp='linear', edge='nearest') (実装を直接呼ぶなら import lightfield; lightfield.lf_all_in_focus(lf, slope_map, levels=None, *, n_levels=16, interp='linear', edge='nearest')、台帳から引くなら 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
poc_compound_eye — py -3.11 examples/poc_compound_eye.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)。

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