Fig. 1. Block schematic of the proposed method

Fig. 2. Schematic of the classification

Fig. 3. The image sets used for experiments. (a) KLVK_sunny; (b) KLVK_cloudy; (c) KLVK_mist; (d) KSQL_sunny

Fig. 4. Results of pseudo horizon detection

Fig. 5. Proposal locating with full framework and without pseudo horizon detection

Fig. 6. Results of candidate approximate airport area detection

Fig. 7. Influence of the coarse layer on the airport candidate region detection

Fig. 8. Results of the proposed airport detection method under different weather and background conditions

Fig. 9. Results of our proposed airport detection method

Fig. 10. A part of results of the airport detection