dichromatic op• 資料種類:rgbimage → image2d
• 呼叫: import fullseye as fs; fs.ledger.specular_coefficient_map(image_rgb, illuminant_rgb=(1.0, 1.0, 1.0), body_rgb=None, max_rank_ratio=0.1, max_negative_frac=0.02)(要直接呼叫實作,import specularity; specularity.specular_coefficient_map(image_rgb, illuminant_rgb=(1.0, 1.0, 1.0), body_rgb=None, max_rank_ratio=0.1, max_negative_frac=0.02);從台帳取用則 opsspecular.get("specular_coefficient_map"))
二色性模型中純量的界面(鏡面)係數。→ (H, W)。
> 以下的詳細說明為原文 —— 摘要與標題已翻譯。
The same decomposition as specular_diffuse_split, returning the scalar m_s(x) instead of the coloured image m_s(x) * G. That scalar is what an inspection routine thresholds: it is the amount of light the surface reflected *as a mirror does*, in the units of the input radiance, and it is zero wherever the surface behaved as a Lambertian body.
specular_coefficient_map(...) * illuminant_unit equals the second return value of specular_diffuse_split exactly, by construction — the two operators share one core.
Arguments, guards and honest limits are identical to specular_diffuse_split — including the fact that the two guards bound gross violations only.
Raises ValueError: exactly the same conditions as specular_diffuse_split (invalid image, invalid illuminant, identically zero image, body colour parallel to the illuminant, either guard firing, fewer than 3 pixels on the uniform-body route, invalid *body_rgb*).
• 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。
• specular_photometric — py -3.11 examples/specular_photometric.py
image2d 作為輸入)dichromatic)specular_diffuse_split · specular_free_transform · illuminant_from_dichromatic_planes
*Provenance: specularity.py — SPECULAR 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.