电学层析成像中软场效应的度量与应用  

Measurement and application of software field effect in ET imaging

作　　者：杨家辉[1] 岳士弘[1] 于晓[1] 

机构地区：[1]天津大学电气与自动化工程学院,天津300072

出　　处：《传感器与微系统》2017年第7期157-160,共4页Transducer and Microsystem Technologies

基　　金：国家自然科学基金资助项目(61573215)

摘　　要："软场效应"的存在导致电学层析(ET)成像技术重建图像分辨率低,为了度量"软场效应"并降低其影响,提出了一个基于灵敏度系数的"软场效应"度量指标,据此实施ET测量数据的重构。实验结果表明:软场效应指标能够有效地反映"软场效应"对ET成像空间分辨率的影响,重构的数据能够提高已有ET算法的空间分辨率。Reconstructed image by electrical tomography （ET） has low distinguishability due to its＂ soft field effect＂. In order to measure the＂ soft field effect＂ and reduce its impacts, a＂ soft field effect＂ metrics based on sensitivity coefficient is proposed and use it to implement reconstruction of ET measurement data. Experimental results show that the proposed soft-field indicators can effectively reflect the effects of＂ soft field effect＂ on ET imaging spatial resolution, and the reconstructed data can improve the imaging resolution for the existing ET imaging algorithm.

关 键 词：电学层析成像 灵敏度系数 软场效应 空间分辨率 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]