Vehicle Trajectory Extraction is the process of recovering the spatiotemporal paths of vehicles from sensor data such as video feeds, lidar point clouds, or GPS logs. It involves detecting and tracking vehicles across frames or time steps and associating detections into continuous motion sequences. Applications include traffic flow analysis, autonomous driving dataset construction, road safety assessment, and behavior prediction. Research challenges include handling occlusions, varying sensor perspectives, and maintaining track consistency across long sequences.

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NEC Provides AI-Based Traffic Monitoring System with Fiber-Optic Sensing Technology for NEXCO CENTRAL

NEC Corporation has deployed an AI-based traffic monitoring system to Central Nippon Expressway Company Limited (NEXCO CENTRAL). The system uses fiber-optic sensing and AI technologies to visualize traffic conditions, such as the location, speed, and direction of travel, from vibrations produced by vehicle movement.