大气湍流退化图像多帧盲复原

针对图像盲复原时PSF（点扩散函数）尺寸参数对复原效果影响较大,提出一种点扩散函数尺寸自适应估计算法,该算法以均方误差为代价函数,通过遍历搜索点扩散函数有限支持域,克服了点扩散函数尺寸参数选择难的问题。仿真结果表明,估计的点扩散函数尺寸接近真实尺寸,对于大气湍流变化快的情形,改进算法取得了较好的图像复原效果。

A Multi-Frame Blind Image Restoration Algorithm for Atmospheric Turbulence Images

An adaptive estimation algorithm is proposed to minimize the impact of size parameters of PSF （Point Spread Function） on the result of blind image restoration. Taking MSE （Mean Squared Error） as the cost function, the algorithm features search of the finite extent of PSF and overcomes difficulty in choice of the parameters about the original size of PSF. Simulation results show that the estimated size of PSF is almost equal to the true value. The proposed algorithm facilitates excellent restoration of space images heavily blurred by highly dynamic atmos-pheric turbulence.