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A Comparison of Vehicular Trajectory Encoding Techniques

Author(s): Markus Koegel, Daniel Baselt, Martin Mauve, Björn Scheuermann.
Title: A Comparison of Vehicular Trajectory Encoding Techniques
Published: MedHocNet '11: Proceedings of the 10th Annual Mediterranean Ad Hoc Networking Workshop, pp. 87--94, Favignana Island, Sicily, Italy, June 2011
Abstract: The transmission of vehicular trajectory information is one basic building block of car-to-car communication. Frequently, this information is transmitted as raw data, i.e., as a sequence of location measurements. In this paper we argue that, due to the laws of physics and the requirement to follow a road, vehicular mobility has very specific characteristics. Hence, vehicular trajectory information can be compressed very efficiently using domain-specific lossy compression schemes. We discuss and compare three promising approaches that can be used to this end: linear approximation, cubic splines, and clothoids.
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