fullseye

specular_coefficient_map — SPECULAR `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"))

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)。

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