motion opvideo → videoimport fullseye as fs; fs.ledger.three_frame_difference(video, threshold: 'float' = 0.1) -> 'np.ndarray' (実装を直接呼ぶなら import videostream; videostream.three_frame_difference(video, threshold: 'float' = 0.1) -> 'np.ndarray'、台帳から引くなら opsvideostream.get("three_frame_difference"))Collins three-frame-difference motion mask per frame → 0/1 (T, H, W) (video).
(|f_t−f_{t−1}|>T) AND (|f_{t−1}−f_{t−2}|>T); zeros for the first two
frames. Ghost-free compared with :func:frame_difference_causal.
py -3.11 examples/video_streaming.pyvideo を入力に取れる)temporal_median_window · moving_average_window · background_subtraction_window · frame_difference_causal · exponential_background · exponential_foreground · running_mean_std · optical_flow_magnitude_stream
motion)motion_history_image · motion_energy_image
Provenance: videostream.py — VIDEOSTREAM 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.