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介绍了作者在电容CT重建算法、测量装置方面所进行的工作,并较为详细地介绍一种基于网络理论的新算法,这种算法是将介质分布映射为一个电容网络,网络中的电容值直接与介质分布有关。为了解决从测量电极所测得的电容计算网络内部电容这一逆问题,分析和利用了附加的网络结构约束。将测量过程等效为相应的四端网络,利用迭代方法进行求解,得到了较好的实验结果。
This paper introduces the author’s work in capacitance CT reconstruction algorithm and measuring device, and introduces a new algorithm based on network theory in detail. The algorithm maps the medium distribution into a capacitor network, and the capacitance in the network is directly And the media distribution. In order to solve the inverse problem of calculating the internal capacitance of the network from the measured capacitance of the measuring electrode, additional network structure constraints are analyzed and utilized. The measurement process is equivalent to the corresponding four-terminal network, and the iterative method is used to solve the problem. Good experimental results are obtained.