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

Figure 12

Illustrations of vehicle tracking and counting result on expressway video sequence. (a) Experimental results of correlation-matched algorithm and single detection line counting method under low-perspective scenario. (b) Experimental results of the correlation-matched algorithm and the double detection line (forward direction and backward direction) counting methods under low-perspective scenario. (c) Experimental results of our tracking algorithm and single detection line counting method. Among them, our tracking algorithm uses the least squares method to optimize the trajectory after the correlation-matched algorithm under challenging high-perspective scenario. (d) The experimental results of our tracking and counting methods. Among them, our counting method defines the forward and backward directions mentioned in Section 2.3 under challenging high-perspective scenario.

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