【摘要】 由于正交小波变换的不具备线性相位、不具有平移不变性等特性,导致其在图像去噪领域仍存在很多问题,本文将双正交冗余离散小波变换应用到几种经典小波阈值图像去噪方法中,以克服标准正交小波变换在阈值图像去噪中存在的问题。实验证明该方法的去噪效果明显优于正交小波方法和普通双正交小波变换的去噪效果。更多还原

【Abstract】 Since orthogonal wavelet transform without linear phase and translation invariant leads to many problems in image de-noising field,in this paper,biorthogonal redundant discrete wavelet transform was applied to several classical image de-noising ways based on wavelet shrinkage so as to overcome the problems of standard orthogonal wavelet transform in the image shrinkage de-noising.The experiment results show the de-noising effect of proposed method is better than those of the orthogonal wavelet transform and the common biorthogonal wavelet transform.更多还原