5 article Xu, Yihua; Deng, Xiao; Jia, Yunde A Multi-Cue-Based Human Body Tracking System University Library of Bielefeld 32 article Xu, Yihua; Deng, Xiao; Jia, Yunde; Liu, Xiabi; Jia, Yunde A Constrained Alternating Optimization Framework for Feature Matching University Library of Bielefeld 43 article Xu, Yihua; Deng, Xiao; Jia, Yunde; Liu, Xiabi; Jia, Yunde; Xu, Yihua; Lv, Jingjun; Li, Shanqing; Jia, Yunde EyeScreen: A Vision-Based Desktop Interaction System University Library of Bielefeld