Implementation of Biorthogonal Wavelet Transform Using Windowed APDF Based on DCT
Xiao Zhou, Qiming Fu, Fanfan Yang, Chengyou Wang · International Journal of Signal Processing Image Processing and Pattern Recognition · 2014
All phase digital filter (APDF) is a new type of linear phase FIR digital filter that was proposed in recent years.Firstly, the theory of biorthogonal wavelet transform and windowed APDF based on DCT is expounded and the relationship between them is discussed.Secondly, a novel algorithm is proposed to implement biorthogonal wavelet transform by using windowed APDF based on DCT.As an important application of biorthogonal wavelet transform, multi-resolution analysis of 2-D image signal could be used to test the feasibility and applicability of the proposed algorithm.Finally, the simulation results using MATLAB tool are shown in this paper and the analysis indicates that the proposed method performs well.