Created by: diligentpeng

打印信息： The 'num_classes'(number of classes) you set is 29, and 'with_background' in 'dataset' sets False. So please note the actual number of categories is 29.

config文件中设置： metric: VOC num_classes: 29 以及 use_default_label: true with_background: false

PaddleDetection/ppdet/data/source/voc.py文件中的类别也改为了对应的29类