【学术报告5】
题目：Fast Iterative Algorithms for Blind Phase Retrieval
报告人：常慧宾 研究员（天津师范大学数学科学学院）
邀请人：白敏茹
时间：2023年12月14日 下午4：00-5：00
地点：数学院425
摘要:
In nanoscale and ultrafast imaging technique, the reconstruction procedure is normally formulated as a blind phase retrieval (BPR) problem, where one has to recover both the sample and the probe jointly from phaseless data. We first present the mathematical formula of BPR, and related nonlinear optimization problems，and then give a brief review of the recent iterative algorithms. They mainly consist of three types of algorithms, including the operator-splitting based first-order optimization methods, second-order algorithms with Hessian, and subspace methods. The future research directions for experimental issues and theoretical analysis are further discussed.
专家简介:
常慧宾，天津师范大学数学科学学院，研究员、博士生导师、副院长，主要研究领域为计算光学成像、图像处理及高性能计算。在SIAM系列、IEEE汇刊等期刊发表论文三十余篇，获ICCS2019最佳论文奖、天津市数学和统计学联合年会-青年学者奖，与合作者共同开发了叠层成像分析软件，为世界多个同步辐射光源提供数据分析服务。
