Infrared and visible image fusion based on NSCT and stacked sparse autoencoders
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To integrate the infrared object into the fused image effectively, a novel infrared (IR) and visible (VI) image fusion method by using nonsubsampled contourlet transform (NSCT) and stacked sparse autoencoders (SSAE) is proposed. Firstly, the IR and VI images are decomposed into low-frequency subbands and high-frequency subbands by using NSCT. Secondly, SSAE is performed on the low frequency subband of IR image to calculate the object reliabilities (OR) of the low frequency subband coefficients. Subsequently, an adaptive multi-strategy fusion rule based on OR is designed for the fusion of low frequency subbands and a choose-max fusion rule with the absolute values of high frequency subband coefficients are employed for the fusion of high frequency subbands. Experimental results show the proposed method is superior to the conventional methods in highlighting the infrared objects as well as keeping the background information in VI image.
KeywordsImage fusion Stacked sparse autoencoders Nonsubsampled contourlet transform Infrared images
This work was supported by the National Natural Science Foundation of P. R. China under grant no.61772237, the Provincial research grant no. BK20151358, BK20151202, the Suzhou science and technology project under Grant SYG201702, the Fundamental Research Funds for the Central Universities JUSRP51618B and the Equipment Development and Ministry of Education union fund 6141A02033312.
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