Image Reconstruction Algorithm Based on Optimization without Constraint
|更新时间:2026-09-14
|
Image Reconstruction Algorithm Based on Optimization without Constraint
无约束最优化图像重建算法研究
Issue 3, Pages: 256-260(2007)
作者机构:
中北大学信息与通信工程学院
作者简介:
基金信息:
DOI:
CLC:
Published:2007
稿件说明:
移动端阅览
惠苗, 潘晋孝. Image Reconstruction Algorithm Based on Optimization without Constraint[J]. 2007, (3): 256-260.
DOI:
惠苗, 潘晋孝. Image Reconstruction Algorithm Based on Optimization without Constraint[J]. 2007, (3): 256-260.DOI:
Image Reconstruction Algorithm Based on Optimization without Constraint
摘要
在无约束最优化为基础的图像重建问题中
为了提高迭代效率以及重建图像质量
首次提出将变度量法应用到图像重建中.分别给出了变度量法
最速下降法和共轭梯度法的算法描述
并且分析了这些方法的优缺点.变度量法在迭代效率和重建图像质量方面优于其它两种算法.通过模拟实验
分别对这三种算法进行了迭代次数和重建图像质量的比较
结果证明了变度量法的优越性.
Abstract
In the image reconstruction based on optimization without constraint
the variable metric method
the steepest descent method
and conjugate gradient method were applied to image reconstruction to improve iterative efficiency and reconstructed quality
and their virtue and shortcoming were analyzed.Variable metric method was better than other algorithms in iterative efficiency and reconstructed quality.Simulating experiment for above algorithms was compared at iterative efficiency and reconstructed quality respectively.The result showed the advantage of variable metric method.
关键词
Keywords
references
孔慧华,潘晋孝.带有松弛因子的迭代法在图像重建中的应用[J].华北工学院学报,2004,25(6):472-475.Kong Huihua,Pan Jinxiao.Iterative algorithm with relaxation parameter applied to image reconstruction[J].Journal ofNorth China Institute of Technology,2004,25(6):472-475.(in Chinese)