Share Email Print
cover

Proceedings Paper

Precision feature point tracking method using a drift-correcting template update strategy
Author(s): Xiaoming Peng; Qian Ma; Qiheng Zhang; Wufan Chen; Zhiyong Xu
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

We present a drift-correcting template update strategy for precisely tracking a feature point in 2D image sequences in this paper. The proposed strategy greatly extends Matthews et al's template tracking strategy [I. Matthews, T. Ishikawa and S. Baker, The template update problem, IEEE Trans. PAMI 26 (2004) 810-815.] by incorporating a robust non-rigid image registration step used in medical imaging. Matthews et al's strategy uses the first template to correct drifts in the current template; however, the drift would still build up if the first template becomes quite different from the current one as the tracking continues. In our strategy the first template is updated timely when it is quite different from the current one, and henceforth the updated first template can be used to correct template drifts in subsequent frames. The method based on the proposed strategy yields sub-pixel accuracy tracking results measured by the commercial software REALVIZ(R) MatchMover(R) Pro 4.0. Our method runs fast on a desktop PC (3.0 GHz Pentium(R) IV CPU, 1GB RAM, Windows(R) XP professional operating system, Microsoft Visual C++ 6.0 (R) programming), using about 0.03 seconds on average to track the feature point in a frame (under the assumption of a general affine transformation model, 61×61 pixels in template size) and when required, less than 0.1 seconds to update the first template. We also propose the architecture for implementing our strategy in parallel.

Paper Details

Date Published: 11 February 2009
PDF: 10 pages
Proc. SPIE 7245, Image Processing: Algorithms and Systems VII, 72450T (11 February 2009); doi: 10.1117/12.805435
Show Author Affiliations
Xiaoming Peng, Univ. of Electronic Science and Technology of China (China)
Qian Ma, Institute of Optics and Electronics (China)
Qiheng Zhang, Institute of Optics and Electronics (China)
Wufan Chen, Univ. of Electronic Science and Technology of China (China)
Zhiyong Xu, Institute of Optics and Electronics (China)


Published in SPIE Proceedings Vol. 7245:
Image Processing: Algorithms and Systems VII
Nasser M. Nasrabadi; Syed A. Rizvi; Jaakko T. Astola; Karen O. Egiazarian, Editor(s)

© SPIE. Terms of Use
Back to Top