typed op• 資料種類:qimage → image
• 呼叫:fullseye.apply(img, "tb_monogenic_phase", 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。*
*輸出以類 viridis 偽彩色顯示(深紫 = 小，黃 = 大)，便於讀取距離、相位、方向、深度這類「量的場」。*
*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_monogenic_phase: 處理階段 (文件網站)
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_monogenic_phase: 其他輸入影像 (文件網站)
單演訊號的局部相位 atan2(|R|, f)。→ (H, W)。
> 以下的詳細說明為原文 —— 摘要與標題已翻譯。
In [0, pi] — the monogenic phase is measured against the *magnitude* of the Riesz vector, whose sign is carried by the orientation instead, so the range is a half turn rather than a full one. That is the standard convention (Felsberg & Sommer) and it is stated here because a caller arriving from complexops.cx_phase (whose raw range is (-pi, pi]) will otherwise assume a full turn and see a "wrapped" map that is not wrapped.
display=True maps [0, pi] to [0, 1] for viewing; the default is False — the opposite of cx_phase's default, deliberately, because the consumers of this quantity in this module are numerical, and a display scaling that arrives silently in a measurement is a factor of pi that nothing announces.
Phase is the quantity a translation shifts linearly, which is why the whole motion half of this module reads it. For an edge, phase 0 means the peak of a bright line, pi/2 a step edge and pi the peak of a dark line — the local *structure type*, independent of contrast.
Raises ValueError: the input is not a valid quaternion field, or its k component is non-zero; *display* is not a bool.
Typed bridge of the quat op monogenic_phase 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_monogenic 0.50 0.50 tb_monogenic_phase 0.50 0.50
下面的範例呼叫的是底層帳本運算子 monogenic_phase。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)。
• quaternion_monogenic — py -3.11 examples/quaternion_monogenic.py
image 作為輸入)identity · gaussian · mean_box · bilateral · unsharp · median · min_filter · max_filter
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.