Fig. 1. Laser paint removal for F-16 fighter by ARLCRS^[14]

Fig. 2. X ray images of welded sample after different pretreatment. (a) Pickling; (b) Sandpaper polishing; (c) Laser cleaning^[21]

Fig. 3. Wall-climbing robot for laser cleaning^[27]

Fig. 4. Laser cleaning composite welding automatic robot^[35]

Fig. 5. Compound laser cleaning head^[37]

Fig. 6. Comparison of surface topography for two laser cleaning modes. (a) Regular spiral cleaning; (b) Random spiral cleaning^[42]

Fig. 7. (a) Original rust pattern; (b) Image after outline filling^[50]