文章基本信息

标题：Wavelet-based Image Modelling for Compression Using Hidden Markov Model
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作者：Muhammad Usman Riaz ; Imran Touqir ; Maham Haider 等
期刊名称：International Journal of Advanced Computer Science and Applications(IJACSA)
印刷版ISSN：2158-107X
电子版ISSN：2156-5570
出版年度：2016
卷号：7
期号：11
DOI：10.14569/IJACSA.2016.071139
出版社：Science and Information Society (SAI)
摘要：Statistical signal modeling using hidden Markov model is one of the techniques used for image compression. Wavelet based statistical signal models are impractical for most of the real time processing because they usually represent the wavelet coefficients as jointly Gaussian or independent to each other. In this paper, we build up an algorithm that succinctly characterizes the interdependencies of wavelet coefficients and their Non-Gaussian behavior especially for image compression. This is done by extracting the combine feature of hidden Markov model and Wavelet transformation that gives us comparatively better results. To estimate the parameter of wavelet based Hidden Markov model, an efficient expectation maximization algorithm is developed.
关键词：thesai; IJACSA Volume 7 Issue 11; Hidden Markov model; Wavelet transformation; Compression; Expectation Maximization