为提高电容层析成像系统重建图像质量,提出基于图像融合的电容成像方法。通过电磁场有限元仿真软件COMSOL构建ECT传感器模型进行仿真研究,分别通过共轭梯度算法和奇异值分解算法重建图像,运用基于小波变换的图像融合方法对图像进行处理。仿真及实验结果表明该方法有效改进了ECT图像质量。
In order to improve the imaging quality of ECT system,an imaging technique based on wavelet fusion method is proposed.Simulations are done by constructing an ECT sensor model using the finite element analysis software COMSOL.Conjugate gradient and singular value decomposition algorithms are utilized to implement image reconstruction,thereafter the wavelet-transform-based image fusion method is used in image processing.Both simulation and experimental results demonstrate that the proposed method can improve imaging quality obviously.