Four-Appraisal-Indexes

代码说明：

  计算图像的平均梯度，边缘强度，信息熵以及方差，图像质量评价(The average gradient calculation image, edge strength, entropy and variance, image quality assessment)

文件列表：

图像质量评价
............\avg_gradient.m,485,2009-10-02
............\edge_intensity.m,621,2009-10-02
............\shannon.m,1017,2009-10-02
............\variance.m,240,2009-10-02