lf_from_mla — LIGHTFIELD `decode` op

• データ種: image2d → lightfield

• 呼び出し: import fullseye as fs; fs.ledger.lf_from_mla(raw, angular=(5, 5), *, offset=(0, 0), crop=False) (実装を直接呼ぶなら import lightfield; lightfield.lf_from_mla(raw, angular=(5, 5), *, offset=(0, 0), crop=False)、台帳から引くなら opslightfield.get("lf_from_mla"))

使い方

Decode a microlens-array raw frame into a (V, U, H, W) light field.

The plenoptic sensor stores, for microlens (t, s), a V x U block of pixels — one per direction through the main lens' exit pupil. So raw pixel (offset_y + t*V + v, offset_x + s*U + u) is exactly L[v, u, t, s]:

the decode is a pure re-sort, no interpolation, no data invented. lf_to_mla inverts it bit-exactly.

*offset* is the integer position of the first whole microlens; a real MLA is never aligned to pixel (0, 0). Sub-pixel MLA calibration is out of scope (see the module docstring) — this operator works on an already-rectified frame.

By default a raw frame whose usable size is not a whole multiple of the microlens pitch is a ValueError, because the alternative — quietly dropping the last partial row of microlenses — shifts every subsequent microlens centre and produces a light field that looks right and is wrong. Pass crop=True to opt in to that crop explicitly.

Raises ValueError: *raw* not 2-D or non-finite, *angular* outside [1, MAX_ANGULAR], a negative *offset*, an *offset* that leaves fewer than one whole microlens, a size that is not a multiple of the pitch (unless crop=True), a decoded sub-aperture image over MAX_SPATIAL on a side, and a decoded size over MAX_LF_ELEMENTS.

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(`lightfield` を入力に取れる)

lf_to_mla · lf_stats · lf_subaperture · lf_center_view · lf_views · lf_epi · lf_refocus · lf_focal_stack

同カテゴリ(`decode`)

lf_to_mla · lf_stats

*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_from_mla — LIGHTFIELD decode op

使い方