摘要
本文提出一种基于Landweber迭代的电容层析成像系统一步稳定图像重建算法。该算法通过构建压缩算子可以克服传统Landweber迭代方法存在的半收敛性,得到稳定的重建图像。同时该算法的矩阵算子可以预先计算,然后通过一步矩阵运算实现图像重构。实验结果表明,该算法可保证重建图像的实时性和鲁棒性。
This paper reports a one-step stable image reconstruction algorithm for electrical capacitance tomography （ECT） based on Landweber iteration. To get a stable ECT image, a compressive operator is constructed and the new algorithm can overcome the semi-convergence problem of conventional Landweber iteration. Furthermore, the matrix operator used in the new algorithm can be pre-calculated, which directly reconstructs the image through one-step matrix operation. Experimental results demonstrate that this algorithm can ensure the good real-time response and robustness of the reconstructed image.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2007年第11期1982-1986,共5页
Chinese Journal of Scientific Instrument
基金
国家高技术研究发展计划专项经费(2006BAI03A00)资助项目
关键词
电容层析成像
Landweber迭代
半收敛性
一步图像重建算法
鲁棒性
electrical capacitance tomography （ECT）
Landweber iteration
semi-convergence
one-step image re construction algorithm
robustness
