Pattern recognition and computer vision Second Chinese Conference, PRCV 2019, Xi’an, China, November 8–11, 2019 : proceedings, part III - Lin, Zhouchen; Wang, Liang; Yang, Jian; Shi, Guangming 1965-; Tan, Tieniu; Zheng, Nanning; Chen, Xilin; Zhang, Yanning (Springer, 2019)