【摘要】 在同时代数重构法(SART)中,引入阻尼项即可得到阻尼同时代数重构法(DSART)。可以证明,它收敛于阻尼最小二乘问题的解,因而克服了收敛于最小二乘问题的SIRT、SART法可能出现的不稳定解。文中给出了超声物理实验重建的结果。更多还原

【Abstract】 SDART (Simultaneous Damping Algebraic Reconstruction Techniquc) is constructed by introducing an additional damping term into SART (Simultaneous Algebraic Reconrtruction Technique), which can be shown to converge to the solution of a damping least-square problem. As a result, the ambiguity in solutions of SIRT and SART method can be avoided, which are supposed to converge to the solution of common L-S problems. Besides the theoritical description for SDART, some reconstruction results from sonic experiments in lab are presented in this paper.更多还原