typed op• Data kinds: rgbimage → rgbimage
• Call: fullseye.apply(img, "tb_wetness", a=0.5, b=0.5) (the 2-D model is one image plus two scalar knobs a,b∈[0,1])
*The figure is the actual output on a synthetic 128×128 input. Left: input, right: output. Point clouds are drawn as a top-down scatter (brightness = z), 1-D series as a line plot, volumes as the maximum-intensity projection along z, videos as the middle frame, complex images as magnitude; return values that are not pictures are shown as the values themselves.*
Sweeping knob a (0.1 / 0.5 / 0.9, the other knob at its default):
▸ tb_wetness: knob a sweep (docs site)
Sweeping knob b (0.1 / 0.5 / 0.9, the other knob at its default):
▸ tb_wetness: knob b sweep (docs site)
Stages (the ops that come before → this op, left to right):
▸ tb_wetness: stages (docs site)
On other images (synthetic scene / photo / coins. Top row: inputs, bottom row: their outputs. Knobs at default):
▸ tb_wetness: other inputs (docs site)
Base colour of a wet surface. Diffuse darkens (and specular increases).
> The detailed description below is the original text — the summary and the headings are translated.
base_rgb: 乾いた状態の色 (H,W,3) または (3,)。wet: 濡れ具合(0–1)。
ior: 水膜の屈折率。
返り値: 濡れた状態の拡散色(同形)。
なぜ暗くなるか: 水膜の内側で全反射が起き、拡散光が何度も表面へ戻されて
そのたびに吸収される。近似として、乾いた反射率 ρ に対し内部反射率
Ri = 1 − (1 − Ri0)/n² 相当の再吸収を掛ける ―― 濡れた砂が黒く見える現象そのもの
(鏡面が増えるのは clearcoat_shade(coat=wet) を重ねて表す)。
2-D 進化レジストリへ橋渡しした optics の op `wetness。実装は同じで、呼び出し規約だけ op(v, a, b) に合わせてある。a が wet(既定 1)、b が ior`(既定 1.33)を振る。
• 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 program below has been verified to run (same input as the figure). In Studio's help this block becomes buttons that load and run it on the spot.
img_to_rgb 0.50 0.50 tb_wetness 0.50 0.50
▸ Load this pipeline · Load & run
The examples below call the underlying ledger op wetness. This bridge op is the same implementation adapted to the fn(v, a, b) convention, so the behaviour carries over unchanged (only the call form differs).
• machined_metal_and_materials — py -3.11 examples/machined_metal_and_materials.py
rgbimage as input)identity · tb_sensor_capture · tb_specular_diffuse_split · tb_specular_coefficient_map · tb_specular_free_transform · tb_rgb_to_quaternion
typed)tb_points_to_voxel · tb_estimate_point_normals · tb_iss_keypoints · tb_project_points · tb_render_point_depth · tb_statistical_outlier_removal · tb_radius_outlier_removal · tb_voxel_grid_downsample
*Provenance: ops.py — 2D 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.