“…In the past few years, labeled image datasets have played a critical role in high-level image understanding [Simonyan, 2007;Min, 2016;Zhao, 2018;Zhang, 2017;Xie, 2019;Shu, 2018;Wang, 2015;Hu, 2017;Hua, 2017;Liu, 2018;Huang, 2018;Xu, 2017]. However, the process of constructing manually labeled datasets is both time-consuming and labor-intensive [Deng, 2009].…”