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Fusion technique for grey-scale visible light and infrared images based on non-subsampled contourlet transform and intensity-hue-saturation transform

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3 Author(s)
Kong, W. ; Missile Inst., Dept. of Comput. Eng., Air Force Eng. Univ., Xi'an, China ; Lei, Y. ; Ni, X.

An adaptive fusion technique based on non-subsampled contourlet transform (NSCT) and intensity-hue-saturation (IHS) transform is presented. First, the grey-scale visible light image is colourised by utilising a reference image, and then, the values of components I, H and S can be obtained via IHS transform, which can separate intensity information from spectrum information of the image. Second, multi-scale and multi-directional decompositions of the infrared image and the component I of the grey-scale visible light image are performed by NSCT. By adopting certain fusion rules, the low-frequency and high-frequency components of the fused image can be achieved. Third, being the component I of the final fused image, the grey-scale fused image can be gained by the use of inverse NSCT. Finally, the red-green-blue colourised fused image is reconstructed by the inverse IHS. Experimental results show that the technique is effective.

Published in:

Signal Processing, IET  (Volume:5 ,  Issue: 1 )

Date of Publication:

Feb. 2011

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