Fig. 1. Normalized spectral response curves of each spectrum segment of CCD3 camera

Fig. 2. Atmospheric correction process of remote sensing images in mountainous areas based on Environmental Satellite

Fig. 3. Remote sensing image and DEM data after pretreatment. (a) Multispectral remote sensing image of region A to be corrected; (b) DEM matched by region A; (c) multispectral remote sensing image of region B to be corrected; (d) DEM matched by region B

Fig. 4. Topographic factors of regions A and B. (a) Slope of region A; (b) aspect of region A; (c) sky view factor of region A; (d) illumination angle of region A; (e) slope of region B; (f) aspect of region B; (g) sky view factor of region B; (h) illumination angle of region B

Fig. 5. Images of regions A and B before and after correction. (a) Image of region A before correction; (b) image of region A after correction; (c) image of region B before correction; (d) image of region B after correction

Fig. 6. Image entropy of region B before and after correction

Fig. 7. Image contrast of region B before and after correction

Fig. 8. Image definition of region B before and after correction

Fig. 9. Regression curves of cosine values of illumination angle and images in different bands before and after correction. (a) Band 1 before correction; (b) band 1 after correction; (c) band 2 before correction; (d) band 2 after correction; (e) band 3 before correction; (f) band 3 after correction

Fig. 10. Spectral curves of different features before and after correction. (a) Withered grass; (b) Chinese pine;（c）fruit tree