Biometric Recognition 14th Chinese Conference, CCBR 2019, Zhuzhou, China, October 12-13, 2019, Proceedings - Sun, Zhenan; Sun, Zhenan; He, Ran; He, Ran; Feng, Jianjiang; Feng, Jianjiang; Shan, Shiguang; Shan, Shiguang; Guo, Zhenhua; Guo, Zhenhua (Springer International Publishing : Imprint: Springer, 2019)