① 采用逆滤波、维纳滤波和约束最小二乘方滤波复原图像。 ② 实现四种均值滤波(Inverse filtering, Wiener filtering and constrained least square square filtering are used to restore the image. Realizing four kinds of mean filtering)

约束最小二乘方滤波要求噪声的方差和均值，这些参数可通过给定的退化图像计算出来，这是约束最小二乘方滤波的一个重要优点。(Constrained least square square filtering requires the variance and mean of noise. These parameters can be calculated by a given degraded image. This is an important advantage of constrained

在matlab中使用约束的最小二乘方滤波复原法进行图像的复原(Image restoration using matric least squares filtering restoration in matlab)