imaging op• Data kinds: image2d × image2d × image2d → table
• Call: import fullseye as fs; fs.ledger.veiling_glare_index(img, dark_mask, bright_mask) (to call the implementation directly, import edgesfr; edgesfr.veiling_glare_index(img, dark_mask, bright_mask); from the registry, opsoptics.get("veiling_glare_index"))
> This operator's description has not been translated yet. The original text follows as it is.
迷光(ベーリンググレア)指数: 黒い点の中心の明るさの平均 / 白地の明るさの平均(ISO 9358 の考え方)。
*dark_mask*(必須): 黒い点の中心部の画素(点の縁の ぼけ を含めない —— 縁を含めるとコアの ぼけ まで迷光に数える)。
*bright_mask*(必須): 白地の画素。★黒い点の大きさ(と光源の広さ)で答えが変わる: 裾が 1/(1+(r/r0)²) のレンズでは
黒い点の一辺を 16 → 256 px にすると同じレンズの指数が 19.6 % → 4.5 %(poc_veiling_glare 3 節)。点の大きさは結果と一緒に報告すること。
返り値 `{"vgi": 比, "dark": 黒点の平均, "bright": 白地の平均, "n_dark", "n_bright"}`。暗電流・黒レベルは引かない
(引いた像を渡す)。
Raises `ValueError`: 画像・マスクの形が違う / マスクが bool でない・空・重なる / 白地の平均が 0 以下。
Every optics op validates its input before computing (nothing slips through silently):
• Units are baked into the argument name — _mm / _um / _deg / _mrad. Confusing mm with µm does not crash; it yields a plausible-looking wrong answer, so the name prevents it. Nothing here guesses the unit from the magnitude.
• **Strings raise ValueError** — float('50') succeeds, so an unparsed configuration value would slip through as a length (measured: thin_lens('50', '200') returned a plausible 66.667 mm). bool is refused too, as the implicit promotion True == 1.
• **complex / masked arrays raise ValueError (real-valued slots only; silently dropping the imaginary part or peeling off the mask is refused). NaN/Inf raises ValueError on every input.**
• Division by zero and its relatives are refused by name: focal length 0, radius of curvature 0, refractive index <= 0, a fully opaque aperture (all zeros, so the normalisation is 0/0), a PSF whose sum is <= 0, a Stokes vector with S0 = 0, and an object sitting at the front focal point (the image is at infinity).
• Only two ops return a non-finite value, and both state it as a contract: depth_of_field returns far_mm = inf beyond the hyperfocal distance (that is what the hyperfocal distance means), and gaussian_beam returns wavefront_radius_mm = inf at the waist (the radius of curvature of a plane wavefront). Both also return a finite companion (far_is_infinite / curvature_per_mm). **Any other silent NaN/Inf is detected internally and raises ValueError** — "float64 overflowed" and "the answer is infinite" are different claims, so the first is never returned wearing the face of the second.
• Size caps: generated grids are capped by optics.MAX_GRID (4096); supplied fields/PSFs/apertures by optics.MAX_FIELD_ELEMENTS (2^24); ABCD element chains by optics.MAX_SYSTEM_ELEMENTS (1024); Zernike by MAX_ZERNIKE_TERMS (512) / MAX_ZERNIKE_ORDER (40) / MAX_ZERNIKE_BASIS (2^25). This closes, fail-closed, the paths where a small argument triggers a huge internal allocation (measured: n_max=40 × 4096² needs 108 GB).
• Physically impossible states are refused too: a Stokes vector with degree of polarisation > 1, negative transmittance, negative intensity, and invalid Zernike indices such as n-|m| odd.
• measurement_uncertainty — 計測の不確かさと校正の知識 — 「測れている」を主張するために
• mv_cameras — 産業用カメラメーカー（センサとの紐付け・ラインスキャン / TDI）
• virtual_machine_vision — 仮想マシンビジョン — パラメータの洗い出しとオブジェクト模型
• Sample-data catalog (download URLs / licences) — 2-D uses skimage.data (BSD/public domain) plus synthetic images; 3-D lists download URLs for real data sources (Stanford, PDS, …).
• Operator provenance and references — the sources of the research/methods this op family came from.
• The canonical algorithm (author, year) and its uses are named in the family usage guide above.
• poc_veiling_glare — py -3.11 examples/poc_veiling_glare.py
table as input)abcd_matrix · wavefront_stats · sfr_from_edge · paraxial_trace · seidel_coefficients · spot_stats · tolerance_analysis · wavefront_from_opd
imaging)psf_to_mtf · mtf_diffraction · wavefront_stats · edge_spread · sfr_from_edge · mtf50
*Provenance: edgesfr.py — OPTICS operator registry. This per-op note is generated by tools/opdocs.py md (do not hand-edit).*
© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.