[9.1 图像增广](9.1%E5%9B%BE%E5%83%8F%E5%A2%9E%E5%B9%BF.md) [9.2 微调](9.2%E5%BE%AE%E8%B0%83.md) [9.3 目标检测和边界框](9.3%E7%9B%AE%E6%A0%87%E6%A3%80%E6%B5%8B%E5%92%8C%E8%BE%B9%E7%95%8C%E6%A1%86.md) [9.4 锚框](9.4%E9%94%9A%E6%A1%86.md)