specular_coefficient_map — SPECULAR `dichromatic` op

• データ種: rgbimage → image2d

• 呼び出し: 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) (または opsspecular.get("specular_coefficient_map"))

使い方

The scalar interface (specular) coefficient of the dichromatic model. → (H, W).

The same decomposition as :func: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 :func:specular_diffuse_split exactly, by construction — the two

operators share one core.

Arguments, guards and honest limits are identical to

:func:specular_diffuse_split — including the fact that the two guards

bound gross violations only.

Raises `ValueError`: exactly the same conditions as

:func: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*).

詳しい使い方ガイド

• specular_photometric ファミリガイド

参考(サンプルデータ・文献)

• 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。

実行できる例(この op を実際に呼ぶ検証済みサンプル)

• specular_photometric — py -3.11 examples/specular_photometric.py

型が繋がる次の op(`image2d` を入力に取れる)

polarization_render

同カテゴリ(`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)。*

specular_coefficient_map — SPECULAR dichromatic op

使い方