isp op• 資料種類:rgb → vector
• 呼叫: import fullseye as fs; fs.ledger.awb_gains(rgb, method='gray_world', percentile=99.0)(要直接呼叫實作,import gfx2d; gfx2d.awb_gains(rgb, method='gray_world', percentile=99.0);從台帳取用則 opsgfx2d.get("awb_gains"))
估計白平衡增益 (g_R, g_G, g_B)(gray-world / white-patch,g_G = 1)。
> 以下的詳細說明為原文 —— 摘要與標題已翻譯。
`method="gray_world": the scene averages to grey, so `g_c = mean_G /
mean_c` (Buchsbaum, 1980). method="white_patch"`: the brightest
surfaces are white, so `g_c = P_G / P_c with P` the *percentile*
(default 99, i.e. not the single hottest pixel) of each channel. Both are
closed forms; neither is right for every scene (a red wall breaks
gray-world, a coloured light breaks white-patch) and the docstring says so
rather than picking one silently. Apply with :func:rgb_apply_gains or,
on the mosaic, :func:raw_apply_gains.
Ground truth: after applying gray-world gains the three channel means are
equal to 1e-12; after white-patch gains the three percentiles are equal.
Raises `ValueError`: unknown *method*, a channel whose statistic is 0
(no gain can be defined), or a *percentile* outside `(0, 100]`.
• 範例資料目錄(下載 URL / 授權) —— 2-D 用 skimage.data(BSD/公有領域)加合成圖,3-D 給出真實資料源(Stanford/PDS 等)的下載 URL。
• 運算子來歷與參考文獻 —— 該運算子族所依據的研究/方法出處。
• 演算法的正典(作者・年份)與用途見上面的族使用指南。
• raw_to_display_isp — py -3.11 examples/raw_to_display_isp.py
vector 作為輸入)rgb_apply_gains · raw_apply_gains
isp)raw_black_level · raw_dead_pixel_mask · raw_dead_pixel_correct · lens_shading_gain · lens_shading_correct · rgb_apply_gains · raw_apply_gains · raw_demosaic_bilinear
*Provenance: gfx2d.py — GFX2D 運算子登記表。本條目由 tools/opdocs.py md 自動產生(請勿手動編輯)。*
© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.