1. M.J. Black, A.D. Jepson, Eigentracking: obust matching and tracking of articulated objects using view-based representation, in: Proceedings of the Fourth European Conference on Computer Vision, Cambridge, UK, vol. 1, April 15–18, 1996, pp. 329–342.
2. G.D. Hager, P.N. Belhumeur, Real-time tracking of image regions with changes in geometry and illumination, in: Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition, San Francisco, CA, USA, vol. 1, June 18–20, 1996, pp. 403–410.
3. S. Birchfield, Elliptical head tracking using intensity gradients and color histograms, in: Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition, Santa Barbara, CA, USA, vol. 1, June 23–25, 1998, pp. 232–237.
4. Sequential Karhunen–Loeve basis extraction and its application to images;Levy;IEEE Trans. Image Process.,2000
5. A.D. Jepson, D.J. Fleet, T.R. El-Maraghi, Robust online appearance models for visual tracking, in: Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition, Kauai, HI, vol. 1, December 9–14, 2001, pp. 415–422.