CAJ | 학술논문

针对目前磁感应成像技术(MIT)的图像重建质量存在精度较低的问题，提出了一种基于压缩感知原 MIT 图像重建方法。将 MIT 系统电压数据的采集过程视为压缩感知的线性测量过程，通过对灵敏度矩阵进行补零拓展和行向量随机重组操作重新设计了测量矩阵；采集到的电压向量也用相同的方式处理，作为压缩感知的测量信号。然后利用压缩感知信号重构算法恢复原始信号。最后进行了仿真实验，实验结果表明，利用本方法获得的重建图像误差和相关系数比传统图像重建算法要好。由此可见，这是一种精度较高的 MIT图像重建方法。
침대목전자감응성상기술(MIT)적도상중건질량존재정도교저적문제，제출료일충기우압축감지원 MIT 도상중건방법。장 MIT 계통전압수거적채집과정시위압축감지적선성측량과정，통과대령민도구진진행보령탁전화행향량수궤중조조작중신설계료측량구진；채집도적전압향량야용상동적방식처리，작위압축감지적측량신호。연후이용압축감지신호중구산법회복원시신호。최후진행료방진실험，실험결과표명，이용본방법획득적중건도상오차화상관계수비전통도상중건산법요호。유차가견，저시일충정도교고적 MIT도상중건방법。
To improve image reconstruction quality of magnetic induction tomography (MIT),a new MIT image reconstruction method based on compressed sensing was put forward.Here the voltage collection process of MIT system was regarded as linear measurement process of compressed sensing,the measurement matrix was designed by zero expansion of the sensitivity matrix and its row vectors random reconstruction,and the measurement voltage vector expanded by the same way was regarded as measurement signals of compressed sensing.The original signal was recovered by signal reconstruction method of compressed sensing.Finally,the simulation experiments were performed. The experimental results indicated that the average image reconstruction error and the average correlation coefficient obtained by the method are better than corresponding indicators obtained by the traditional reconstruction image algorithm.So it is a kind of MIT image reconstruction method with high accuracy.