Fig. 1. Infrared and visible image fusion framework

Fig. 2. Comparison of visible images before and after enhancement

Fig. 3. Coefficients extracted by NSST decomposition

Fig. 4. Fusion results of infrared and visible algorithms

Fig. 5. Fusion results of T₁~T₄ images

Fig. 6. Comparison of objective data of images before and after fusion

Fig. 7. The influence of the selection of threshold shrinkage coefficient on image objective data

Fig. 8. Fusion results of different threshold coefficients

Fig. 9. Fusion results of “Road” images

Fig. 10. Fusion results of “Tent” images

Fig. 11. Fusion results of mine images

Fig. 12. Fusion results of “Road” images with noise variance of 5

Fig. 13. Fusion results of “Road” images with noise variance of 10