Fig. 1. Matching process of bidirectional consistency constraint

Fig. 2. Fusion process of slow in and out weighted fusion algorithm

Fig. 3. h(t) function curves under different conditions

Fig. 4. Power function weighted fusion process

Fig. 5. Power function weighting coefficient of Cell acceleration

Fig. 6. Matching results of image feature points under different luminance by different algorithms. (a) Traditional SURF algorithm; (b) proposed algorithm

Fig. 7. Matching results of image feature points under different angles by different algorithms. (a) Traditional SURF algorithm; (b) proposed algorithm

Fig. 8. Matching results of image feature points under different resolutions by different algorithms. (a) Traditional SURF algorithm; (b) proposed algorithm

Fig. 9. Matching results of image feature points under different scales by different algorithms. (a) Traditional SURF algorithm; (b) proposed algorithm

Fig. 10. Two original image sequences with different brightness. (a) Image 1; (b) image 2

Fig. 11. Comparison of results of three fusion algorithms on images for different brightness. (a) Slow in and slow out weighted fusion algorithm; (b) Ref. [16]; (c) proposed algorithm

Fig. 12. Two original image sequences with different angles. (a) Image 1; (b) image 2

Fig. 13. Comparison of results of three fusion algorithms on images from different angles. (a) Slow in and slow out weighted fusion algorithm; (b) Ref. [16]; (c) proposed algorithm

Fig. 14. Two original image sequences. (a)Image 1 (b)Image 2

Fig. 15. Comparison of results of three fusion algorithms on images with different resolutions. (a) Gradual fade weighted fusion algorithm; (b) Ref. [16]; (c) proposed algorithm

Fig. 16. Two original image sequences of different heights. (a) Image 1; (b) image 2

Fig. 17. Comparison of results of three fusion algorithms on images of different heights. (a) Slow in and slow out weighted fusion algorithm; (b) Ref. [16]; (c) proposed algorithm

Fig. 18. Time-consuming comparison histogram of 4 groups of experiments

Fig. 19. MSE comparison of related algorithms

Fig. 20. Information entropy data comparison