[低] 背景统计每帧重建 sRGB 查找表
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Assessment
- Difficulty
- 2/5
- Estimated time
- 1-3 hours
- Newbie friendliness
- 70/100
- Issue type
- Refactor
- Clarity
- Clearly specified
- Activity status
- Active
- Tech stack
- python
- Domain
- performance
Research direction
Start at windows/birdlock/core/analysis.py around line 500, in _background_stats(), and read the loop that rebuilds the 256-entry LUT on every call. Then open windows/birdlock/core/render.py and compare the module-level _SRGB2LIN table with what the local loop computes, checking that the formulas match exactly before choosing between hoisting a module-level constant and importing the existing table. Done means the LUT is built once at import time, the two tables agree on all 256 values, and a run over a sample frame sequence gives the same stats as before — plus a quick timing check if a benchmark exists.
Written by the indexing model from the issue text.
Description
位置：windows/birdlock/core/analysis.py:500
现象：_background_stats() 对每帧重新计算 256 项 c/12.92 ... ** 2.4 的 LUT；render.py 已有模块级 _SRGB2LIN，这里是重复实现。3000 帧会重复约 76 万次幂运算。
建议：提升为模块级常量，或复用 render._SRGB2LIN。
来源：2026-11-15 全仓只读审计，PR #7 未包含此项。 未在 Windows 实机复现，复现路径由代码审计推得。
- Dominant language
- Swift
- Stars
- 2
- Forks
- 2
- Avg merge
- 1h 11m
- Merged PRs (30d)
- 2
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