报告题目: Improved block preconditioners for linear systems arising from half-quadratic image restoration
报告人:王超杰 副教授 北京工商大学
报告时间:4月16号下午16:00-16:40
报告地点:腾讯会议 ID: 468 910 170
报告人简介: 王超杰,副教授,硕士生导师。2019年博士毕业于北航数学与系统学院。研究方向为预处理迭代法及其在图像处理中的应用,目前在研国家自然科学基金1项,已发表多篇学术论文。
报告摘要:
In this talk, we consider designing block preconditioners for the structured linear system arising from the half-quadratic image restoration problem. We analyze the spectral properties of the preconditioned matrix and present eigenvalue bounds. Numerical results illustrate the efficiency of the proposed preconditioners.