A image fusion method based on Contourlet_domain Hidden Markov Tree model （CHMT） is proposed .CHMT can capture different scales and directions dependencies of the ＇coefficients. When CHMT is applied to image fusion,the characteristic of images can be effectively extracted and more important information is preserved. In the low-frequency information,the regional variance method is used to obtain the fused low-frequency information. The high-frequency coefficients are modeled using hidden Markov tree and the model is trained to get the posteri...
