dichromatic op• データ種: rgbimage → image2d
• 呼び出し: 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) (実装を直接呼ぶなら 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)、台帳から引くなら opsspecular.get("specular_coefficient_map"))
二色性モデルのスカラーな界面(鏡面)係数。→ (H, W)。
> 以下の詳細説明は原文のままです —— 要約と見出しは訳出済み。
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*).
• specular_photometric ファミリ ガイド
• サンプルデータ カタログ(DL URL / ライセンス) — 2-D は skimage.data(BSD/public)+ 合成、3-D は実データ源(Stanford/PDS 等)の DL URL。
• 演算子の来歴・参考文献 — この op 族の元になった研究/手法の出典。
• アルゴリズムの正典(著者・年)と用途は上記ファミリ使い方ガイドに記載。
• specular_photometric — py -3.11 examples/specular_photometric.py
image2d を入力に取れる)dichromatic)specular_diffuse_split · specular_free_transform · illuminant_from_dichromatic_planes
*Provenance: specularity.py — SPECULAR operator registry. この per-op ノートは tools/opdocs.py md が自動生成(手編集しない)。*
© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.