【摘要】 电容层析成像图像重建是一个不适定的反问题求解过程,具有初值敏感性,难以重建其稳定的管截面图像。该文通过奇异值分解分析了成像系统产生不适定性的原因,提出了一种光滑性约束下的最小二乘图像重建算法,有效克服了图像重建过程中的不适定性,获得了稳定的管截面图像。更多还原

【Abstract】 Electrical capacitance tomographic image reconstruction is an ill_posed inverse problem and it is sensitive to the initial conditions.So it is difficult to reconstruct stable cross -section images.By means of the decomposition of singular value,the ill-posed reason of the imaging system is analyzed.The least square image reconstruction algorithm based on smoothing constraint is presented so as to overcome the ill-posed problem of image reconstruction,so that stable cross-sectional images can be reconstructed.更多还原