isp op• データ種: image2d → image2d
• 呼び出し: import fullseye as fs; fs.ledger.raw_black_level(raw, offsets, white=1.0, pattern='RGGB') (実装を直接呼ぶなら import gfx2d; gfx2d.raw_black_level(raw, offsets, white=1.0, pattern='RGGB')、台帳から引くなら opsgfx2d.get("raw_black_level"))
Bayer フレームの黒レベル補正: 色ごとに (raw − offset) / (white − offset)。
> 以下の詳細説明は原文のままです —— 要約と見出しは訳出済み。
A sensor's dark output is not zero (pedestal + dark current); every later
stage that multiplies (gains, CCM) would scale that pedestal into a colour
cast, so this runs first. *offsets* is a scalar, 3 values `(R, G, B)`
or 4 values `(R, G1, G2, B) in the same [0, 1]` units as *raw*; *white*
is the saturation level, so a pixel at *white* maps to exactly 1.
Ground truth: a frame built as `offset + k * signal` comes back as
`k * signal / (white - offset)` to 1e-15; a pixel at the offset maps to 0.
Raises `ValueError: non-finite input, an offset >= white`, or an
unknown *pattern*.
• サンプルデータ カタログ(DL URL / ライセンス) — 2-D は skimage.data(BSD/public)+ 合成、3-D は実データ源(Stanford/PDS 等)の DL URL。
• 演算子の来歴・参考文献 — この op 族の元になった研究/手法の出典。
• アルゴリズムの正典(著者・年)と用途は上記ファミリ使い方ガイドに記載。
• raw_to_display_isp — py -3.11 examples/raw_to_display_isp.py
image2d を入力に取れる)shadow_cast_2d · dither · raw_dead_pixel_mask · raw_dead_pixel_correct · lens_shading_gain · lens_shading_correct · raw_apply_gains · raw_demosaic_bilinear
isp)raw_dead_pixel_mask · raw_dead_pixel_correct · lens_shading_gain · lens_shading_correct · awb_gains · rgb_apply_gains · raw_apply_gains · raw_demosaic_bilinear
*Provenance: gfx2d.py — GFX2D 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.