Video-Based Vehicle Counting for Expressway: A Novel Approach Based on Vehicle Detection and Correlation-Matched Tracking Using Image Data from PTZ Cameras

Figure 7

Examples of multivehicle counting methods. (a) Set the counting area. The area surrounded by the red line is defined as the count area. (b) A graph of the counting method. Different colors represent different regions, such as region A representing the fourth quadrant, region B representing the first quadrant, region C representing the second quadrant, and region D representing the fourth quadrant. The trajectory points of different regions satisfy the coordinate characteristics of the corresponding quadrants.

(a)

(b)