Fig. 1. Schematic diagram of three-dimensional topography and geometric dimensions of folding wing

Fig. 2. Schematic diagram of geometric dimension measurement of folding wing

Fig. 3. Schematic diagram of imaging of contour connected area

Fig. 4. Composition of automatic measurement system for folding wing geometry size

Fig. 5. Measurement flow chart of folding wing geometry automatic measurement system

Fig. 6. Schematic diagram of folding wing contour connectivity domain extraction algorithm

Fig. 7. Schematic diagram of the folding wing feature extraction algorithm

Fig. 8. Flow chart of improved Canny-FAST

Fig. 9. Comparison of effects between Canny-FAST and improved Canny-FAST

Fig. 10. Test bench for automatic measurement of folding wing geometry size

Fig. 11. Data chart of precision verification experiment

Fig. 12. Comparison of experimental errors of Canny-FAST with improved Canny-FAST

Fig. 13. Folding wing measurement experimental data