Modified Landweber Algorithm for Solving the Inverse Problem in EIT

• 作者: WANGChao WANGHuaxiang
• 来源期刊: 电子学报(英文版)
• 学科: 工学
• 关键词: EIT 迭代算法 图像重建 逆问题
• 年，卷（期）: 2005,（1）
• 页码范围: 96-98
• 页数: 3页
• 分类号: TP391.41
• 语种: 中文

摘要

This paper analyses the Landweber iteration method and demonstrates that Landweber method is a modified of the generalized inverse constructed using the iteration solution. The phenomenon is explained that the image reconstructed using Landweber iteration algorithm through a large numbers of iteration steps is similar tothe minimum norm solution of the generalized inverse. A new reconstruction algorithm called the modified Landweber method is proposed, which divides the image reconstruction process into two steps, off-line pre-iteration and on-line one-step reconstruction. The reconstruction speed is markedly improved.