quaternion_to_rgb — QUAT `convert` op

• 資料種類:qimage → rgbimage

• 呼叫: import fullseye as fs; fs.ledger.quaternion_to_rgb(qimage, allow_scalar: 'bool' = False) -> 'np.ndarray'(要直接呼叫實作,import quatimage; quatimage.quaternion_to_rgb(qimage, allow_scalar: 'bool' = False) -> 'np.ndarray';從台帳取用則 opsquat.get("quaternion_to_rgb"))

用法

取四元數影像的向量部,作為線性 RGB。→ (H, W, 3)。

> 以下的詳細說明為原文 —— 摘要與標題已翻譯。

The inverse of rgb_to_quaternion — and, by default, a *checked* inverse. A quaternion image that picked up a scalar component somewhere (a Hamilton product with a non-pure quaternion, a monogenic signal handed here by mistake) is refused rather than silently truncated, because dropping the w component is exactly the kind of loss that produces a plausible picture from the wrong data. Pass allow_scalar=True to opt in to the truncation when it is what you meant.

The tolerance is relative to the field's own peak modulus (_MONOGENIC_K_TOL, 1e-9): a quaternion image that really is pure carries |w| at the 1e-17 level after a round trip through two FFTs, and anything with a meaningful scalar part is many orders above that. Nothing real lives in between.

Raises ValueError: *qimage* is not a finite (H, W, 4) array; or it has a non-negligible scalar part and allow_scalar is False.

詳細使用指南

• quaternion_monogenic 族使用指南

參考(範例資料、文獻)

• 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。

• 演算法的正典(作者、年份)與用途見上面的族使用指南。

可執行的範例(實際呼叫該運算子並已驗證的樣例)

• quaternion_monogenic — py -3.11 examples/quaternion_monogenic.py

型別可銜接的下一個運算子(可接受 `rgbimage` 作為輸入)

rgb_to_quaternion

同類別(`convert`)

rgb_to_quaternion · quat_norm

*Provenance: quatimage.py — QUAT 運算子登記表。本條目由 tools/opdocs.py md 自動產生(請勿手動編輯)。*

quaternion_to_rgb — QUAT convert op

用法