Fig. 1. Schematic of whiskbroom scanning imaging of space camera

Fig. 2. Distortion process of target image

Fig. 3. Calculation of pixel number of nadir ground scene perpendicular to track

Fig. 4. Schematic of corresponding pixels of distorted and extended images perpendicular to track

Fig. 5. Schematic of width of imaging area along track

Fig. 6. Schematics of corresponding pixels of distorted and extended images along track. (a) Original distorted image; (b) extended image

Fig. 7. Architecture of SRCNN

Fig. 8. Architecture of wbi-SRCNN

Fig. 9. Schematic of experimental device of satellite whiskbroom scanning imaging

Fig. 10. Distortion correction result of whiskbroom scanning image. (a) Ground truth; (b) simulated whiskbroom scanning image; (c) distortion-corrected whiskbroom scanning image

Fig. 11. Distortion correction result of whiskbroom scanning linear target. (a) Simulated whiskbroom scanning linear target; (b) distortion-corrected whiskbroom scanning linear target

Fig. 12. Enhanced results of distortion-corrected whiskbroom scanning images. (a) Distortion-corrected whiskbroom scanning images; (b) result of Bicubic; (c) result of SRCNN; (d) result of wbi-SRCNN. Left is wall and right is roof