temporal op• Data kinds: video → video
• Call: import fullseye as fs; fs.ledger.temporal_bandpass(video, f_lo, f_hi, fps) -> 'np.ndarray' (implementation को सीधे call करना हो तो import motionmag; motionmag.temporal_bandpass(video, f_lo, f_hi, fps) -> 'np.ndarray', registry से लेना हो तो opsmotionmag.get("temporal_bandpass"))
हर pixel की time series का ideal temporal band-pass -> (T, H, W)।
> नीचे का विस्तृत विवरण मूल text में है — सारांश और headings का अनुवाद हो चुका है।
Each pixel is transformed along time, every DFT bin whose frequency lies outside [f_lo, f_hi] (in Hz, magnitude, DC always excluded) is zeroed, and the result is transformed back. Frequency-selective where videops.moving_average and videops.spatiotemporal_gaussian are low-pass; this is the filter isolating "what is happening at 4 Hz".
Exact for a component sitting on a bin: with T frames at fps, a sinusoid at k*fps/T Hz passes with gain 1 and everything else in the band passes untouched. Measured on a bin-centred 4 Hz unit sinusoid in a 64-frame 32 fps clip that also carries a DC offset of 0.5 and a 12 Hz component of amplitude 0.3, the recovered waveform matches the 4 Hz term alone to max|err| = 4.36e-15.
A brick-wall filter rings in time; that is the price of an exact pass-band and it is the same choice the 2012 Eulerian magnification paper makes. The output is zero-mean along time by construction.
• motion_magnification family guide
• Sample data catalog (DL URL / license) — 2-D के लिए skimage.data (BSD/public) + synthetic, 3-D के लिए real data sources (Stanford/PDS आदि) के DL URL।
• Operators का स्रोत और संदर्भ — इस op family के मूल research/methods के स्रोत।
• Algorithm का मानक स्रोत (लेखक, वर्ष) और उपयोग ऊपर की family usage guide में दिए गए हैं।
• motion_magnification — py -3.11 examples/motion_magnification.py
• poc_beam_modal_video — py -3.11 examples/poc_beam_modal_video.py
• poc_motion_magnification — py -3.11 examples/poc_motion_magnification.py
video को input के रूप में लेते हैं)temporal_band_power · band_snr · motion_magnify · phase_displacement · displacement_series
temporal)temporal_band_power · band_snr
*Provenance: motionmag.py — MOTIONMAG operator registry. यह per-op note tools/opdocs.py md से अपने-आप generate होता है (हाथ से edit न करें)।*
© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.