【摘要】 为更好的确定混凝土中缺陷的位置、大小等参数,采用IART算法的加权方式,对CG算法提出一种新的加权方法,特点是权重加在成像单元上而不是方程上。给出弯曲射线层析成像迭代过程中权重和迭代初始值的选择方式。模拟仿真和混凝土实例证明了改进算法能够在一定程度上提高曲线层析成像的计算精度和图像重建质量。更多还原

【Abstract】 To better determine parameters of defects’location and the size in the concrete,using the method of IART,a new weighted CG algorithm,its weight is added on the imaging unit instead of equation,is proposed.The way of obtaining weighting value and initial iterative value in iterative process of curve tomography is given.The results of simulation and concrete examples show that accuracy of computation and the quality of image reconstruction can be improved by Weighted CG algorithm更多还原