本文系统论述超分辨率图象恢复的两大类算法,极大熵法和凸集投影法.我们用可变空间域窗法改善了GP算法,并求得最大熵法的一种情况的非线性方程组的近似解.最后给出我们的实验结果.我们还在一维情况下当收到信号的分辨率比原信号低几倍时进行极大熵恢复也得列满意的结果. This paper systematically discusses two categories of algorithms for super-resolution image restoration, the maximum entropy method and the convex projection method.We use the method of variable space domain window method to improve the GP algorithm and find a case of maximum entropy method The approximate solution of the linear equations is given in the end.Finally, we give the experimental results.We also obtained the satisfactory results when the received signal resolution is several times lower than the original signal in the one-dimensional case.