Kai Xu (徐凯) is a Professor at School of Computer Science, National University of Defense Technology (NUDT). He earned his Ph.D in computer science in 2011 from NUDT. From 2008 to 2010, He worked as a visiting PhD in the GrUVi lab of Simon Fraser University, supervised by Richard (Hao) Zhang. During 2012-2014, he conducted postdoctoral research at the VCC@SIAT, working with Baoquan Chen. During 2017-2018, he was a Visiting Research Scientist in the Vision and Robotics Group at Princeton University, working with Thomas Funkhouser and Szymon Rusinkiewicz.