A reconstruction method for the gradient of a two-variables function

摘要：

Numerical differentiation is a classical ill-posed problem. In image processing, sometimes we have to compute the gradient of an image. This involves a problem of numerical differentiation. In this paper we present a truncation method to compute the gradient of a two-variables function which can be considered as an image. A Holder-type stability estimate is obtained. Numerical examples show that the proposed method is effective and stable.

作者: Hongbo Guo Xiangtuan Xiong

作者单位: Department of Mathematics Northwest Normal University, China Lanzhou, Gansu 730000

会议类型: 国际会议

会议名称: The 13th IEEE Joint International Computer Science and Information Technology Conference(2011年第13届IEEE联合国际计算机科学与信息技术会议 JICSIT 2011)

会议地点: 重庆

会议语种:英文

页码: 1601-1604

在线出版日期: 2011-08-20（万方平台首次上网日期，不代表论文的发表时间）