Multiresolution wavelet is widely used in antinoise application because of the correlation of different layer wavelet coefficients . this paper presents a method called " shifting different layer coefficients " to suppress noise and pick - up the edge 多尺度小波系数由于其相关性而在去噪中得到应用，本文提出利用多尺度小波系数的移位相关的性质来最大限度的抑制噪声，提取边缘。
