watervision op• 数据种类:image2d → table
• 调用: import fullseye as fs; fs.ledger.caustic_floor_segmentation(irradiance, method='otsu') -> 'dict'(要直接调用实现,import watervision; watervision.caustic_floor_segmentation(irradiance, method='otsu') -> 'dict';从台账取用则 opsoptics.get("caustic_floor_segmentation"))
从地面照度图像中分割出焦散线 -> 字典(掩码、阈值、线的周期)。
> 以下的详细说明为原文 —— 摘要与标题已翻译。
The bright web of caustics on a pool floor is what a crack detector mistakes for cracks. method="otsu": the finite values are normalised by their mean and split into two classes at the Otsu threshold (256 bins); the mask is the bright class. method="fold": ridge detection by curvature: the smaller eigenvalue of the Hessian of the Gaussian-smoothed irradiance (sigma 1 pixel) is the curvature across a line; where it is strongly negative (above the Otsu threshold of its negative part) and the irradiance is above its mean, the pixel is on a caustic ridge. inf pixels (the folds of the wavefront method of caustic_irradiance) are caustic by definition and are always in the mask. The table has mask (bool), threshold, fraction (of pixels in the mask), period_px_x / period_px_y (the fundamental period in pixels of the column and row profiles of the mask, from the lowest strong spectral peak refined by a parabola; NaN when the profile is flat), dominant_axis ("x", "y" or "none": the axis whose profile of the mask varies most) and n_inf. NaN, negative values, an image under 8 x 8 and a constant image (no caustic to find) are refused.
optics 的每个算子都先校验输入再计算(不让任何东西无声通过):
• 单位写进参数名 —— _mm / _um / _deg / _mrad。把 mm 和 µm 弄混不会崩溃,而是给出「看着合理却是错的答案」,所以用命名来防。这里绝不从数值大小去猜单位。
• 字符串一律 ValueError —— float('50') 会成功,于是未解析的配置值会被当成长度混进来(实测:thin_lens('50', '200') 曾返回看着合理的 66.667 mm)。bool 也按 True == 1 的隐式提升拒绝。
• complex / masked array 一律 ValueError(仅接受实数槽位;拒绝无声丢弃虚部或剥掉掩码)。所有输入中的 NaN/Inf 一律 ValueError。
• 逐项点名拒绝除零及其近亲:焦距 0、曲率半径 0、折射率 <= 0、全不透明光阑(全为 0,归一化变成 0/0)、总和 <= 0 的 PSF、S0 = 0 的 Stokes 矢量、物体位于前焦点(像在无穷远)。
• 只有两个算子会返回非有限值,而且都写进了契约:depth_of_field 在超焦距以外返回 far_mm = inf(这正是超焦距的定义),gaussian_beam 在束腰处返回 wavefront_radius_mm = inf(平面波前的曲率半径)。两者都同时返回一个有限的搭档(far_is_infinite / curvature_per_mm)。除此之外的无声 NaN/Inf 都在内部检出并 ValueError ——「float64 溢出了」和「答案是无穷大」是两种不同的主张,不能拿后者的脸去交付前者。
• 尺寸上限:生成网格受 optics.MAX_GRID(4096)限制,传入的场/PSF/光阑受 optics.MAX_FIELD_ELEMENTS(2^24),ABCD 元件序列受 optics.MAX_SYSTEM_ELEMENTS(1024),Zernike 受 MAX_ZERNIKE_TERMS(512)/ MAX_ZERNIKE_ORDER(40)/ MAX_ZERNIKE_BASIS(2^25)。以 fail-closed 堵住「小参数引发巨大内部分配」的路径(实测:n_max=40 × 4096² 需要 108 GB)。
• 物理上不可能的状态同样拒绝:偏振度 > 1 的 Stokes 矢量、负透过率、负强度、n-|m| 为奇数等非法 Zernike 指标。
• 示例数据目录(下载 URL / 许可证) —— 2-D 用 skimage.data(BSD/公有领域)加合成图,3-D 给出真实数据源(Stanford/PDS 等)的下载 URL。
• 算子来历与参考文献 —— 该算子族所依据的研究/方法出处。
• 算法的正典(作者、年份)与用途见上面的族使用指南。
• poc_water_inspection_images — py -3.11 examples/poc_water_inspection_images.py
table 作为输入)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_surface_appearance · wet_dry_inspection_pair · underwater_inspection_image
*Provenance: watervision.py — OPTICS 算子登记表。本条目由 tools/opdocs.py md 自动生成(请勿手工编辑)。*
© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.