计量学报2011，Vol.32Issue(5)：436-440,5.DOI:10.3969/j.issn.1000-1158.2011.05.10
ERT技术图像重建算法研究
Study on the Reconstruction Algorithms of ERT
余金华1
作者信息
- 1. 浙江工商大学信息与电子工程学院,浙江杭州 310018
- 折叠
摘要
Abstract
The electrical resistance tomography reconstruction algorithms of two-phase flow can be categorized into two kinds,direct algorithms and iterative algorithms. These reconstruction algorithms are compared and studied,the results show that;the direct algorithms are fast,but the reconstruction images are blurry and can only be used as qualitative analysis. The iterative algorithms are slower,but the reconstruction images quality is better. As the pixels rise to enhance resolution of reconstruction images, the increment time of the direct algorithms is very small. The reconstruction time of the Newton-Raphson algorithm and BFCS algorithm is largely increased because of the increased dimension of the Hessian matrix. The Hessian matrix and its inverse matrix are simplified in the modified BFGS algorithm, therefore the reconstruction time is increased a little.关键词
计量学/电阻层析成像/图像重建算法/两相流Key words
Metrology/Electrical resisitance tomography/Image reconstruction algorithm/Two-phase flow引用本文复制引用
余金华..ERT技术图像重建算法研究[J].计量学报,2011,32(5):436-440,5.
