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Design of oversampled cosine-sine modulated filter banks for directional image representation
2015
2015 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA)
We propose an oversampled cosine-sine modulated filter bank (OCSMFB) for richer overcompleteness contributing sparse directional image representation. The CSMFB, proposed as an alternative of the dual-tree complex wavelet transform (DTCWT), can be designed easily by modulating a prototype filter and can work in image processing tasks better than the DTCWT. However, the conventional CSMFB consists of two critically-sampled FB, and its non-redundancy restricts design degree of freedom and
doi:10.1109/apsipa.2015.7415296
dblp:conf/apsipa/OgawaKS15
fatcat:u42dtjt6vbadvmmrl74saupzqq