[LAB 09 · 检测几何：框、匹配、NMS 与 AP](/course/notebooks/90d213b4e1e04c7e889ee6fc042b2358.html)

# LAB 09 · 检测几何：框、匹配、NMS 与 AP · 实现代码
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固定框匹配、PR/AP、NMS误删相邻对象反例
展开完整实现代码
```
import os, tempfile
from pathlib import Path
# Isolated ephemeral workspace supports detached runs with readonly project storage.
SPATIAL_RUN_DIR = Path(tempfile.mkdtemp(prefix='lecture03-'))
os.chdir(SPATIAL_RUN_DIR)
print('Ephemeral experiment directory:', SPATIAL_RUN_DIR)
```