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Image fusion method based on bivariate alpha-stable model in multiwavelet domain

[+] Author Affiliations
Cai Xi

Northeastern University at Qinhuangdao, Engineering Optimization and Smart Antenna Institute, Qinhuangdao 066004, China

Beihang University, School of Electronic and Information Engineering, Beijing 100191, China

Zhao Wei

Beihang University, School of Electronic and Information Engineering, Beijing 100191, China

Wang Jinkuan

Northeastern University at Qinhuangdao, Engineering Optimization and Smart Antenna Institute, Qinhuangdao 066004, China

Han Guang

Northeastern University at Qinhuangdao, Engineering Optimization and Smart Antenna Institute, Qinhuangdao 066004, China

J. Electron. Imaging. 22(3), 033011 (Aug 12, 2013). doi:10.1117/1.JEI.22.3.033011
History: Received November 21, 2012; Revised July 4, 2013; Accepted July 11, 2013
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Abstract.  Considering statistical characteristics of multiwavelet coefficient vectors, an image fusion method with a window-based salience measure for vector fusion is proposed in the multiwavelet domain. After analyzing joint probability distribution of multiwavelet coefficient vectors, we respect the joint probability distribution as a peaky and heavy tailed two-dimensional non-Gaussian distribution, and hence model it by using a bivariate symmetric alpha-stable (BiSαS) distribution. Model parameters of the BiSαS distribution can be estimated from samples of multiwavelet coefficient vectors. In a sliding window, the estimated parameters can reveal the impulsive shape of the histogram of the multiwavelet coefficient vectors within the window. So we employ these model parameters to form the new salience measure indicating the degree of prominent information. In our method, vector fusion rule is introduced to avoid inconsistency of decision maps between the component sub-bands and, consequently, to lessen ringing artifacts in final fusion results. Experimental results support the effectiveness of our proposed method in the area of visual quality and objective evaluations.

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Citation

Cai Xi ; Zhao Wei ; Wang Jinkuan and Han Guang
"Image fusion method based on bivariate alpha-stable model in multiwavelet domain", J. Electron. Imaging. 22(3), 033011 (Aug 12, 2013). ; http://dx.doi.org/10.1117/1.JEI.22.3.033011


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