Curve-based representation of moving object trajectories

• Published in: Proceedings. International Database Engineering and Applications Symposium, 2004. IDEAS '04 pp. 419 - 425
• Main Authors: Byunggu Yu, Seon Ho Kim, Bailey, T., Gamboa, R.
• Format: Conference Proceeding
• Language: English
• Published: Los Alamitos CA IEEE 2004; IEEE Computer Society
• Subjects: Air transportation; Airplanes; Application software; Applied sciences; Computer science; Computer science; control theory; systems; Exact sciences and technology; Global Positioning System; Information systems. Data bases; Memory organisation. Data processing; Mobile communication; Software; Spatiotemporal phenomena; Trajectory; Vehicles; Airplane; Database query; Line segment; Object oriented; Database; Trajectory; Localization; Modeling; Computer server; Moving body
• ISBN: 9780769521688; 0769521681
• ISSN: 1098-8068
• DOI: 10.1109/IDEAS.2004.1319817

In recent years, many emerging database applications deal with continuously moving data objects - each data object moves continuously and frequently reports its current location, moving direction, and speed to the database server. A database server for these applications keeps track of the trajectories of individual moving objects and processes queries referring to the past or future trajectories. Related techniques view a moving object trajectory as a sequence of connected line segments. However, most natural moving objects, such as airplanes, vessels, and vehicles, draw a smooth trajectory with no angles. This paper presents our curve-based trajectory representation models. The presented results show that the curve-based models provide much more accurate trajectories than the line-based models when we have the same amount of data (same number of reported points). In other words, the curve-based models require a smaller amount of data while providing the same accuracy in trajectory representation.