fullseye

capture_degrade — SYMBOL symbol_capture op

使い方

反射率の画像に撮像の劣化(照明・ぼけ・センサ雑音)を掛ける(image2d)。

Apply the capture chain to a reflectance image, in physical order:

  1. illumination: E = exposure · (1 + illum_slope · s) · (1 − vignette · ρ²) with s in [−0.5, 0.5] across the image along illum_deg and ρ = radius / half diagonal (so illum_slope = 0.4 means 40 % more light on one side than the other);
  2. lens: defocus as a uniform disc of diameter defocus_px (the geometric blur circle c = A·|Δz|/z' in pixels), uniform motion over motion_px along motion_deg, and a Gaussian of standard deviation gauss_px (residual aberrations / diffraction), each area-integrated, borders replicated;
  3. sensor (only if full_well_e is given): the irradiance 1.0 fills full_well_e electrons; Poisson shot noise, Gaussian read noise read_noise_e (electrons), saturation at full well, and bits-bit quantisation if given. Output = electrons / full_well_e, in [0, 1].

Deterministic for a given seed. Without full_well_e the result is noise-free (read_noise_e must then be 0).

空の入力(辺が 0)は ValueError。 拒否(ValueError): 2-D でない、非有限、負のぼけ量、|illum_slope| >= 2、 vignette が [0, 1) の外、full_well_e < 10、read_noise_e < 0 または full_well_e 無しで > 0、bits が 1..16 の外。

詳しい使い方ガイド

参考(サンプルデータ・文献)

実行できる例(この op を実際に呼ぶ検証済みサンプル)

型が繋がる次の op(image2d を入力に取れる)

barcode_scan_profiles · read_barcode1d · qr_locate · qr_sample · qr_read · dm_locate · dm_sample · dm_read

同カテゴリ(symbol_capture)

render_symbol


Provenance: symrender.py — SYMBOL 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.