报告人: Xiaosheng Zhuang (City University of Hong Kong)

报告题目：Directional Framelets and Applications

报告摘要：Directional multiscale representation systems play an important role in both theory and applications. In theory, directional systems such as curvelets and shearlets have been proved to provide (nearly) optimal approximate rate for cartoon-like functions. In applications such as image/video denoising/inpainting, directional systems have been shown to outperform classical tensor product real-value wavelet/framelet systems. In this talks, we will discuss the design and applications of several types of directional multiscale representation systems, including 1) directional Haar tight framelets and their induced directional box spline tight framelets; 2) tensor product complex tight framelets; 3) affine shear tight frames and affine shear frames with 2-layer structure.

报告人简介:Dr Xiaosheng Zhuang received his bachelor's degree and master's degree in mathematics from Sun Yat-Sen (Zhongshan) University, China, in 2003 and 2005, respectively. He received his PhD in applied mathematics from University of Alberta, Canada, in 2010. He was a Postdoctoral Fellow at Universität Osnabrück in 2011 and Technische Universität Berlin in 2012. He is currently an Associate Professor and the Associate Head of the Department of Mathematics, City University of Hong Kong, which he joined in 2012.

报告时间：2019年6月13日（星期四）上午8：30

报告地点：科技楼南楼602