img2pixelart
图片转像素画 CLI。
安装
uv sync
uv pip install hydra-joblib-launcher # 多线程 multirun 需要
用法
单张转换
uv run img2pixelart img=tests/apple.jpg size=96
输出在当前目录的 result.png。
裁边
去掉图片四周空白区域：
uv run img2pixelart crop-padding tests/apple.jpg
# → tests/apple_no_padding.jpg
参数扫网（multirun）
多个参数值用逗号分隔，-m 开启 multirun，结果自动拼成 combined.png：
# 渐变层次 × 抖动风格 × 描边，81 种组合
uv run img2pixelart -m \
img=tests/apple.jpg \
perceive.ramp_steps=5,7,9 \
render.silhouette_dark_step=0,1,2 \
render.internal_outline_dark_steps=0,1,2 \
render.pattern_style=ordered,diagonal,clustered \
size=96
并行扫网
加 Joblib launcher，n_jobs=-1 用满所有 CPU：
uv run img2pixelart -m \
img=tests/apple.jpg \
perceive.ramp_steps=5,7,9 \
render.silhouette_dark_step=0,1,2 \
render.internal_outline_dark_steps=0,1,2 \
render.pattern_style=ordered,diagonal,clustered \
size=96 \
hydra/launcher=joblib \
hydra.launcher.n_jobs=-1
关键参数
| 参数 | 说明 | 默认值 |
|---|---|---|
size |
输出像素画尺寸 | 96 |
perceive.ramp_steps |
每色相的明度阶梯数 | 5 |
perceive.requested_groups |
色相族数量 | 2 |
render.pattern_style |
抖动风格：ordered / diagonal / clustered |
ordered |
render.silhouette_dark_step |
外轮廓暗化级数（0=无） | 0 |
render.internal_outline_dark_steps |
内部描边暗化级数（0=无） | 1 |
render.dither_fraction_min |
抖动区域下限 | 0.18 |
render.dither_fraction_max |
抖动区域上限 | 0.82 |
完整参数见 img2pixelart/conf/ 目录下各阶段 YAML 文件。
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