volseq_render_orbit — LIVE4D render op

• Data kinds: volseq → rgbvideo

• Call: import fullseye as fs; fs.ledger.volseq_render_orbit(volseq, n_frames: 'int' = 36, pitch: 'float' = 25.0, yaw_start: 'float' = 0.0, yaw_span: 'float' = 360.0, size: 'int' = 256, mode: 'str' = 'intensity', loops: 'int' = 1, percentile: 'float' = 99.5, floor: 'float' = 0.0, opacity_gain: 'float' = 1.0, depth_samples: 'int | None' = None, win: 'int' = 3, pyr_levels: 'int' = 3, iters: 'int' = 5, reg: 'float' = 0.001) -> 'np.ndarray' (to call the implementation directly, import live4d; live4d.volseq_render_orbit(volseq, n_frames: 'int' = 36, pitch: 'float' = 25.0, yaw_start: 'float' = 0.0, yaw_span: 'float' = 360.0, size: 'int' = 256, mode: 'str' = 'intensity', loops: 'int' = 1, percentile: 'float' = 99.5, floor: 'float' = 0.0, opacity_gain: 'float' = 1.0, depth_samples: 'int | None' = None, win: 'int' = 3, pyr_levels: 'int' = 3, iters: 'int' = 5, reg: 'float' = 0.001) -> 'np.ndarray'; from the registry, opslive4d.get("volseq_render_orbit"))

Usage

Renders a volume time series while advancing time and rotating the viewpoint (n_frames, size, size, 3) (rgbvideo).

Frame i composites, with vol_render_transfer, the volume at time t = (i / n_frames) · T · loops mod T (linear interpolation between adjacent volumes) from yaw yaw_start + yaw_span · i / n_frames. Opacity is brightness (normalised by the percentile of the whole sequence; below floor is transparent). mode="intensity" colours by grey brightness, mode="speed" by the speed between adjacent frames (volseq_speed, blue = slow → red = fast). Running time through loops cycles shows the beat many times in 1 orbit. video_write_gif turns it straight into a GIF.

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)

focus_sweep_height_video · focus_sweep_surface_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.