图像重建常常被转化为解非线性无约束极值问题, 通过范数极小化推导出共扼梯度法的 一般算法。通过对模拟数据和实际工件断层扫描数据进行图像重建, 估计了算法的有效性, 结果表明, 与最速下降法相比, 此算法更适用于不完全投影数据的图像重建, 在保证重建图像拟合度的同时, 大大提高了重建速度。-Image reconstruction has often been transformed into solving nonlinear unconstrained extremum problem,

matlab编写的共轭梯度法，用来解决非线性优化问题-matlab prepared by the conjugate gradient method is used to solve nonlinear optimization problems

一种基于约束共轭梯度的闪光照相图像复原算法.-A method based on constrained conjugate gradient of flash radiographic image restoration algorithm.