期刊
SIGNAL PROCESSING
卷 89, 期 5, 页码 946-951出版社
ELSEVIER
DOI: 10.1016/j.sigpro.2008.11.011
关键词
Image modeling; Contourlet; Hidden Markov models; Context design
In this paper, a contourlet contextual hidden Markov model (C-CHMM) is established for modeling contourlet images by adapting a previous CHMM for wavelet images (W-CHMM). A mutual information based context design procedure is presented, through which a new context has been constructed. The C-CHMM is tested in a denoising application with promising results, which verifies its effectiveness. This new model is demonstrated to be a better model for contourlet images than the state of the art contourlet hidden Markov tree model. As a general image model, it also shows more potential than the baseline W-CHMM. (c) 2008 Elsevier B.V. All rights reserved.
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