focus_sweep_surface_video — LIVE4D render op

• Data kinds: volseq → rgbvideo

• Call: import fullseye as fs; fs.ledger.focus_sweep_surface_video(volseq, window: 'int' = 5, zscale: 'float' = 1.0, light=(0.4, 0.4, 0.8), ambient: 'float' = 0.25) -> 'np.ndarray' (to call the implementation directly, import live4d; live4d.focus_sweep_surface_video(volseq, window: 'int' = 5, zscale: 'float' = 1.0, light=(0.4, 0.4, 0.8), ambient: 'float' = 0.25) -> 'np.ndarray'; from the registry, opslive4d.get("focus_sweep_surface_video"))

Usage

> This operator's description has not been translated yet. The original text follows as it is.

焦点掃引(各フレームが z の合焦スタック)の時系列から陰影つきの高さ場の動画 `(T, Y, X, 3)` を

起こす(`rgbvideo`)。

高さは `focus_sweep_height_video` と同じ(合焦度の最大を放物線で副ボクセルに)。高さ場の勾配から

法線を作り(`zscale は z 1 枚の実長 / 画素の実長)、light 方向のランバート陰影(ambient` を

下駄に)を高さの色(青 = 低い → 赤 = 高い)に掛ける。掃引の途中で対象が動くと層の整合が崩れて

高さが跳ぶ(その時刻だけ疑う)。

Detailed usage guide

• live4d family guide

References (sample data, literature)

• Sample-data catalog (download URLs / licences) — 2-D uses skimage.data (BSD/public domain) plus synthetic images; 3-D lists download URLs for real data sources (Stanford, PDS, …).

• Operator provenance and references — the sources of the research/methods this op family came from.

• The canonical algorithm (author, year) and its uses are named in the family usage guide above.

Runnable examples (verified samples that actually call this op)

• poc_live4d — py -3.11 examples/poc_live4d.py

Ops the type connects to (they accept rgbvideo as input)

—

Same category (render)

volseq_render_orbit · focus_sweep_height_video


*Provenance: live4d.py — LIVE4D operator registry. This per-op note is generated by tools/opdocs.py md (do not hand-edit).*

© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.