typed op• 資料種類:video → video
• 呼叫:fullseye.apply(img, "tb_temporal_bandpass", a=0.5, b=0.5)(2-D 的模型是一張圖 + 兩個純量旋鈕 a,b∈[0,1])
*圖為在 128×128 合成輸入上實際執行的輸出。左為輸入，右為輸出。點雲以俯視散點顯示(亮度 = z)，一維序列為折線，體資料為沿 z 的最大值投影，影片為中間影格，複數影像為振幅；無法成像的回傳值直接顯示數值。*
*旋鈕 a 不改變輸出(實測: 0.1 / 0.5 / 0.9 相同)。*
*旋鈕 b 不改變輸出(實測: 0.1 / 0.5 / 0.9 相同)。*
階段(前置運算子 → 本運算子，由左至右):
▸ tb_temporal_bandpass: stages (docs site)
換別的影像(合成場景 / 照片 / 硬幣。上排為輸入，下排為對應輸出。旋鈕取預設):
▸ tb_temporal_bandpass: other inputs (docs site)
動態(GIF: 依序顯示影格 / 視點 / 切片。靜態圖是完整版，GIF 為輔助):
對每個像素的時間序列進行理想時域帶通濾波 -> `(T, H, W)`。
> 以下的詳細說明為原文 —— 摘要與標題已翻譯。
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.
Typed bridge of the motionmag op `temporal_bandpass into the 2-D evolution registry: the same implementation, called under the op(v, a, b) convention. This op has no tunable parameter; a and b` are unused.
• 範例資料目錄(下載 URL / 授權) —— 2-D 用 skimage.data(BSD/公有領域)加合成圖,3-D 給出真實資料源(Stanford/PDS 等)的下載 URL。
• 運算子來歷與參考文獻 —— 該運算子族所依據的研究/方法出處。
下面的程式已確認可以執行(與圖相同的輸入)。在 Studio 說明中，此區塊會變成按鈕，可當場載入並執行。
img_to_video 0.50 0.50 tb_temporal_bandpass 0.50 0.50
▸ Load this pipeline · Load & run
下面的範例呼叫的是底層帳本運算子 temporal_bandpass。此橋接運算子只是把同一實作適配為 fn(v, a, b) 慣例，行為完全相同(只是呼叫形式不同)。
• 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 作為輸入)identity · tb_temporal_band_power · tb_temporal_median_window · tb_moving_average_window · tb_background_subtraction_window · tb_frame_difference_causal · tb_exponential_background · tb_exponential_foreground
typed)tb_points_to_voxel · tb_estimate_point_normals · tb_iss_keypoints · tb_project_points · tb_render_point_depth · tb_statistical_outlier_removal · tb_radius_outlier_removal · tb_voxel_grid_downsample
*Provenance: ops.py — 2D 運算子登記表。本條目由 tools/opdocs.py md 自動產生(請勿手動編輯)。*
© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.