typed op• データ種: lightfield → image
• 呼び出し: fullseye.apply(img, "tb_lf_center_view", a=0.5, b=0.5) (2-D は 1 画像 + 2 スカラつまみ a,b∈[0,1] のモデル)
The centre viewpoint — the ordinary 2-D image a plenoptic camera also gives.
For odd `V and U` the centre is a single view and both modes return it
exactly. For an even axis the centre falls *between* two views, and this
operator does not pretend otherwise:
• `mode="average"` (default) returns the mean of the 2 (or 4) views
straddling the centre — the correctly-centred estimate for a Lambertian
scene, at the cost of a slight blur proportional to the disparity.
• `mode="nearest" returns the single view at floor((N-1)/2)`, which
is sharp but sits half an angular step off centre; every disparity
measured against it carries that half-step bias.
Returns a `(H, W)` 2-D image.
Raises `ValueError`: *lf* not a valid light field, unknown *mode*.
Typed bridge of the lightfield op `lf_center_view into the 2-D evolution registry: the same implementation, called under the op(v, a, b) convention. This op has no tunable parameter; a and b` are unused.
• 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。
• (まだありません)
image を入力に取れる)identity · gaussian · mean_box · bilateral · unsharp · median · min_filter · max_filter
typed)tb_points_to_voxel · tb_estimate_point_normals · tb_iss_keypoints · tb_angle_3points · tb_project_points · tb_render_point_depth · tb_statistical_outlier_removal · tb_radius_outlier_removal
*Provenance: ops.py — 2D 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)。*
© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.