@article {IOPORT.05453259,
    author       = {Rajagopalan, A.N. and Chellappa, Rama and Koterba, Nathan},
    title        = {Background learning for robust face recognition with PCA in the presence of clutter.},
    year         = {2005},
    journal      = {IEEE Transactions on Image Processing},
    volume       = {14},
    number       = {6},
    issn         = {1057-7149},
    pages        = {832-843},
    publisher    = {The Institute of Electrical and Electronics Engineers (IEEE), Piscataway, NJ},
    doi          = {10.1109/TIP.2005.847288},
    identifier   = {05453259},
}