文章基本信息

标题：Implementation of Biorthogonal Wavelet Transform Using Discrete Cosine Sequency Filter
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作者：Baochen Jiang ; Aiping Yang ; Chengyou Wang 等
期刊名称：International Journal of Signal Processing, Image Processing and Pattern Recognition
印刷版ISSN：2005-4254
出版年度：2013
卷号：6
期号：4
出版社：SERSC
摘要：Biorthogonal wavelet transform has been widely used in the fields of image denoising and image coding. It is usually realized by linear phase filters. All phase digital filter is a new type of linear phase digital filter which has been proposed in recent years and has frequency structure. On the basis of analyzing principle of biorthogonal wavelet transform and discrete cosine sequency filter (DCSF), this paper proposes a new algorithm to implement biorthogonal wavelet transform by using discrete cosine sequency filter. Simulation experiments to typical test images are conducted in MATLAB. Experimental results show that whether using the discrete cosine sequency filter or the biorthogonal wavelet transform, the results of the decomposition and reconstruction are the same. It comes to conclude that the proposed algorithm is valid.
关键词：Biorthogonal Wavelet Transform; Filter Design; Linear Phase Filter; Zero-Phase Filter; Discrete Cosine Transform (DCT); Discrete Cosine Sequency Filter (DCSF)