How does the Subject 3 line-crossing detection system know?
1 Answers
The input image undergoes filtering to remove noise and enhance the image, improving visualization effects and facilitating further image processing. Local edges in the image are highlighted, and the "edge intensity" of pixels is defined. Edge point sets are then extracted by setting thresholds. To determine whether a vehicle has crossed the line, the position of the yellow line must be predetermined. The straight-line position is automatically obtained through image information.