Authors: Qiang Zeng(曾强)，Zhaolin You(游照林)，Yuanyuan Chen(陈媛媛)，Jianping Xiong(熊剑平)

Affiliation: ZHEJIANG DAHUA TECHNOLOGY CO.,LTD

Description: We used EfficientNet series as baseline.They were trained with different depth and different width. We also used synthetic samples generated by our own algorithm.To balanced the data, the samples were processed with smooth, cut, rotate. We trained the model with ReCTS train data and synthetic data ,we also resampled the data and rewighted the loss.