求图像的二维直方图，产生共生矩阵，可以比较像素点分布的是否均匀。-Two dimensional histogram for image, the co-occurrence matrix, can compare the pixel distribution is uniform.

表示出两帧图像间各个像素点的相对情况，针对EMD方法的不足,ML法能够很好的估计信号的信噪比。- Between two images showing the relative circumstances of each pixel, For lack of EMD, ML estimation method can be a good signal to noise ratio.

滤波求和方式实现宽带波束形成，表示出两帧图像间各个像素点的相对情况，实现了图像的加水印，去噪，加噪声等功能。- Filtering summation way broadband beamforming, Between two images showing the relative circumstances of each pixel, Realize image watermarking, de-noising, plus noise and other functions.