watervision opなし → table(引数だけで決まる op —— 画像やデータの入力を取らない)import fullseye as fs; fs.ledger.wet_surface_appearance(albedo, roughness, water_film_um, view_deg, light_deg, n_water=None) -> 'dict' (実装を直接呼ぶなら import watervision; watervision.wet_surface_appearance(albedo, roughness, water_film_um, view_deg, light_deg, n_water=None) -> 'dict'、台帳から引くなら opsoptics.get("wet_surface_appearance"))The darkening and the gloss of a surface under a thin water film (Lekner & Dorf 1988; Twomey et al. 1986) -> dict.
A dry diffuse surface of albedo a returns a of the light. Under a water film the light that the surface
scatters upward reaches the water-air interface; the part beyond the critical angle (and the Fresnel share below it) is
reflected back down, hits the surface again and is partly absorbed again. With r the hemispherical,
cosine-weighted internal reflectance of the interface (computed by quadrature, about 0.47 for water) and R_s the Fresnel
reflectance of the incoming light at light_deg, the geometric series of the trapped light gives, for a
Lambertian surface, a_film = a (1 - R_s) (1 - r) / (1 - a r). This is below a for every a in (0, 1) and the
darkening is stronger for darker surfaces (a = 0.5 loses about a third). water_film_um enters only through an
assumed coverage c = 1 - exp(-film / 2 um) (a film thicker than a few micrometres wets all the roughness; interference
in films thinner than a wavelength is not modelled), wet_albedo = (1 - c) a + c a_film, so a film of 0 returns
a exactly. The film also glosses: its smooth surface mirrors the light with the Fresnel reflectance of water (n = 1.33; the dry
dielectric uses 1.5) in a lobe half as wide as the dry one (Gaussian, sigma 0.03 (1 + 4 roughness) rad for the dry
surface), radiance factor pi F G(eps) / cos(light) with eps the angle between
the mirrored light and the viewing direction (|light_deg - view_deg| in the plane of incidence, the viewer opposite the light).
albedo in [0, 1] and roughness in [0, 1] broadcast with water_film_um (>= 0); view_deg and light_deg are scalars in
[0, 90). The table has wet_albedo, dry_albedo, ratio (wet / dry, 1 where the albedo is 0), film_albedo (the
fully wet value), coverage, internal_reflectance_mean (r), fresnel_light (R_s), specular_dry, specular_wet,
specular_fraction_dry / specular_fraction_wet (the share of the specular radiance factor in the total), wet_albedo_rgb
(shape + (3,), with the index of water at 0.61 / 0.54 / 0.465 um), n_water_rgb, n_water and darker (all wet albedos
below the dry ones where the film is thick). Albedos or roughness outside [0, 1], a negative film and angles outside [0, 90)
are refused.
optics の全 op は入力を検証してから計算する(黙って通さない):
_mm / _um / _deg / _mrad。mm と µm の取り違えは crash ではなく「もっともらしく間違った答え」なので、名前で防ぐ。大きさから単位を推測する処理は一切しない。ValueError — float('50') は成功してしまうため、未パースの設定値が長さとして通り抜ける(実測: thin_lens('50', '200') がもっともらしい 66.667 mm を返していた)。bool も True == 1 の暗黙昇格として拒否。ValueError(実数枠のみ。虚部の無言切り捨て・マスク剥がしを拒否)。NaN/Inf は全入力で ValueError。depth_of_field の過焦点距離以遠の far_mm = inf(それが過焦点距離の定義)と gaussian_beam のウエストでの wavefront_radius_mm = inf(平面波面の曲率半径)。どちらも有限の相棒(far_is_infinite / curvature_per_mm)を併せて返す。それ以外の無言 NaN/Inf は内部で検出して ValueError —「float64 が溢れた」と「答えが無限大」は別の主張なので、後者の顔で前者を返さない。optics.MAX_GRID(4096)、供給された場/PSF/開口は optics.MAX_FIELD_ELEMENTS(2^24)、ABCD 素子列は optics.MAX_SYSTEM_ELEMENTS(1024)、Zernike は MAX_ZERNIKE_TERMS(512)/ MAX_ZERNIKE_ORDER(40)/ MAX_ZERNIKE_BASIS(2^25)。小さな引数から巨大な内部確保が起きる経路(実測: n_max=40 × 4096² で 108 GB)を fail-closed で塞ぐ。| 物理的に不可能な状態も拒否: 偏光度 > 1 の Stokes ベクトル、負の透過率、負の強度、n- | m | が奇数などの不正な Zernike 添字。 |
py -3.11 examples/poc_water_inspection_images.pytable を入力に取れる)abcd_matrix · wavefront_stats · sfr_from_edge · paraxial_trace · seidel_coefficients · spot_stats · tolerance_analysis · wavefront_from_opd
watervision)caustic_irradiance · bottle_image · fill_level_from_image · wet_dry_inspection_pair · underwater_inspection_image · caustic_floor_segmentation
Provenance: watervision.py — OPTICS 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.