Fig. 1. Schematic diagram of repairing broken wires

Fig. 2. Center line obtained by geometric center method

Fig. 3. Schematic diagram of normal direction

Fig. 4. Curves of gray distribution properties of laser stripes

Fig. 5. Schematic diagram of eight-angle division and searching for effective points

Fig. 6. Schematic diagram of effective point set

Fig. 7. Comparison of original laser image and extraction effect of algorithm

Fig. 8. Effect diagram extracted by various algorithms

Fig. 9. Schematic diagram of laser line extraction