measure opvideo → pairsimport fullseye as fs; fs.ledger.displacement_series(video, f_lo, f_hi, fps, scales: 'int' = 4, orientations: 'int' = 4) -> 'np.ndarray' (実装を直接呼ぶなら import motionmag; motionmag.displacement_series(video, f_lo, f_hi, fps, scales: 'int' = 4, orientations: 'int' = 4) -> 'np.ndarray'、台帳から引くなら opsmotionmag.get("displacement_series"))Whole-frame displacement waveform -> (T, 2) array of (dx, dy).
The contrast-weighted spatial mean of :func:phase_displacement, i.e. the
rigid-body motion of the scene in pixels, one row per frame. This is the
trace to plot, or to feed to dsp.spectrum to read off the resonant
frequency — a vibration waveform recovered from a camera.
Weights are the same |z|^2 contrast the field solve uses, restricted to
the pixels marked valid, so blank regions do not drag the average
towards zero. A clip with no valid pixel anywhere (a constant image) returns
exact zeros rather than a division by zero.
Sub-pixel accuracy and its cliff inherit from :func:phase_displacement;
measured on the 64x64x64 / 8 px / 4 Hz synthetic, a true 0.5 px amplitude is
recovered as 0.50000000 px (6.7e-16 relative), and a true 0.001 px amplitude
as 0.00100000 px (8.7e-15).
py -3.11 examples/motion_magnification.pypy -3.11 examples/poc_motion_magnification.pypy -3.11 examples/quaternion_monogenic.pypairs を入力に取れる)—
measure)Provenance: motionmag.py — MOTIONMAG 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.