关键词: 多项式变换, 点扩展函数, 模糊估计, 小波变换, 李氏指数

Abstract: The acquisition of the point spread function is the key point in non-blind restoration algorithms for image, it’s very important to get the estimation of point spread function parameter. Since the Gaussian function is the most common model in many optical systems and imaging systems, it’s always the hotspot to estimate the parameters for Gaussian point spread function. This paper gives a detailed introduction of principle for three main estimation algorithms for point spread function, and also gives a comparison of the advantage and deficiency among these algorithms. Finally, the paper gives a perspective of the trend for future research.

Key words: polynomial transform, point spread function, blur estimation, wavelet transform, lipschitz exponent