1. Haritaoglu, I., Harwood, D., Davis, L.S.: W4: Real-time surveillance of people and their activities. IEEE Trans. Pattern Analysis, Machine Intelligence 22(8), 809–830 (2000)
2. Koschan, A., Kang, S.K., Paik, J.K., Abidi, B.R., Abidi, M.A.: Video object tracking based on extended active shape models with color information. In: Proc. 1st European Conf. Color in Graphics, Imaging, Vision, April 2002, pp. 126–131. University of Poitiers, France (2002)
3. Chang, P., Krumm, J.: Object recognition with color occurrence histograms. In: IEEE Conf. on Computer Vision and Pattern Recognition, Fort Collins, CO (June 1999)
4. Horprasert, T., Harwood, D., Davis, L.S.: A robust background subtraction and shadow detection. In: Proc. ACCV 2000, Taipie, Taiwan (January 2000)
5. Chen, C., Hsieh, W., Chen, J.: Panoramic appearance-based recognition of video contents using matching graphs. IEEE Transactions on Systems, Man, and Cybernetics-PART B: Cybernetics 34(1) (February 2004)