Biometric Recognition 7th Chinese Conference, CCBR 2012, Guangzhou, China, December 4-5, 2012, Proceedings - Zheng,Wei-Shi; Sun,Zhenan; Wang,Yunhong; Chen,Xilin; Yuen,Pong C.; Lai,Jianhuang (Lecture Notes in Computer Science / Image Processing, Computer Vision, Pattern Recognition, and Graphics Ser.)