Wavelet analysis of a moving object trajectory

Cuihong Qi; Hong Shu; Jun Pang; Diana Quesada Sedas

doi:10.1117/12.713206

28 October 2006 Wavelet analysis of a moving object trajectory

Cuihong Qi, Hong Shu, Jun Pang, Diana Quesada Sedas

Proceedings Volume 6421, Geoinformatics 2006: Geospatial Information Technology; 64211F (2006) https://doi.org/10.1117/12.713206
Event: Geoinformatics 2006: GNSS and Integrated Geospatial Applications, 2006, Wuhan, China

Abstract

In this paper, we make wavelet analysis of the moving object trajectory to discover some motion patterns locally and globally. Particularly, the trajectory is represented with a sequence of spatial coordinates over time. Boundary extension is made previously for meeting the mathematical preconditions of wavelet transformations. The spatial point, composed of coordinates x and y, is regarded as a function of time. After a wavelet transformation of the moving object trajectory, the wavelet coefficients of modulus maxima are selected for identifying sudden speed-changing points. Further, we make a cubic spline interpolation of pseudo-modulus maxima wavelet coefficients for reducing the error of the reconstructed motion trajectory. Some experimental results have shown that motion maintenance and trajectory generalization are achieved through wavelet analysis of the moving object trajectory.

Citation Download Citation

Cuihong Qi, Hong Shu, Jun Pang, and Diana Quesada Sedas "Wavelet analysis of a moving object trajectory", Proc. SPIE 6421, Geoinformatics 2006: Geospatial Information Technology, 64211F (28 October 2006); https://doi.org/10.1117/12.713206

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