fullseye

raw_dead_pixel_mask — GFX2D isp op

• データ種: image2d → image2d
• 呼び出し: import fullseye as fs; fs.ledger.raw_dead_pixel_mask(raw, threshold=0.1) (実装を直接呼ぶなら import gfx2d; gfx2d.raw_dead_pixel_mask(raw, threshold=0.1)、台帳から引くなら opsgfx2d.get("raw_dead_pixel_mask"))

使い方

Where the dead (stuck / hot) pixels are: 1.0 at a pixel that differs from every one of its 8 same-colour neighbours by more than threshold in the same direction, 0.0 elsewhere. (H, W) float64.

“Every neighbour, same sign” is what separates a defect from an edge: at an edge some same-colour neighbours are on the pixel’s own side. The rule is the one openISP documents for its DPC stage; here it is pattern-free because same-colour neighbours are simply the pixels two steps away.

Ground truth: dead pixels planted in a smooth frame are recovered exactly (no misses, no false alarms) while a hard edge produces none. Raises ValueError: bad raw or a threshold outside (0, 1].

参考(サンプルデータ・文献)

• 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。

実行できる例(この op を実際に呼ぶ検証済みサンプル)

• raw_to_display_isp — py -3.11 examples/raw_to_display_isp.py

型が繋がる次の op(image2d を入力に取れる)

shadow_cast_2d · dither · raw_black_level · raw_dead_pixel_correct · lens_shading_gain · lens_shading_correct · raw_apply_gains · raw_demosaic_bilinear

同カテゴリ(isp)

raw_black_level · raw_dead_pixel_correct · lens_shading_gain · lens_shading_correct · awb_gains · rgb_apply_gains · raw_apply_gains · raw_demosaic_bilinear

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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.

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