Fig. 1. Flowchart of adaptive-AC

Fig. 2. Relative spectral radiance response curves for WV-3 VNIR band

Fig. 3. WV-3 panchromatic band satellite image. (a) Apparent reflectance image; (b) satellite image after atmospheric correction (denoted as “adaptive-AC real surface reflectance image”); (c) result of 2% linear stretching of apparent reflectance image (denoted as “2% linear stretching image”); (d) result of filtering for apparent reflectance image using Prewitt operator (denoted as “Prewitt operator filtering image”)

Fig. 4. Gray distributions of satellite images. (a) Gray distribution of apparent reflectance image; (b) gray distribution of adaptive-AC real surface reflectance image; (c) gray distribution of 2% linear stretching image; (d) gray distribution of Prewitt operator filtering image

Fig. 5. Spectrogram distributions of two-dimensional discrete Fourier transform [small circle area corresponds to low frequency information of satellite image (the brighter the color in this area, the more the low frequency information in satellite image), the area between small and large circles corresponds to high frequency information of satellite image (the brighter the color in this area, the more the high frequency information in satellite image)]. (a) Fourier spectrogram distribution of apparent reflectance image; (b) Fourier spectrogram distribution of adaptive-AC real surface reflectance image; (c) Fourier spectrogram distribution of 2% linear stretching image; (d) Fourier spectrogram distribution of Prewitt operator filtering image