An Online Trajectory Compression System Applied to Resource-Constrained GPS Devices in Vehicles

Abstract

The raw vehicle trajectory data gathered by GPS devices is typically large and needs to be compressed online. However, GPS devices have limited resources, and cannot afford such burdensome task. To alleviate this issue, we design an online trajectory compression system consisting of Trajectory Mapping, Trajectory Compressing and Front-End Visualizer, which is implemented in the mobile phone to migrate the computation burdens. The proposed trajectory compression method does not need extra data during compressing suitable for online applications. Experiment results demonstrate our system has excellent performances regarding effectiveness, efficiency and so on.