• G. Nagy is with the Department of Electrical, Computer, and Systems Engineering, Rensselaer Polytechnic Institute, JEC 6020, 110 8th Street, Troy, NY 12180-0115. E-mail: email@example.com.
• S. Seth is with the Department of Computer Science and Engineering, University of Nebraska-Lincoln, Avery Hall, Room 359, Lincoln, NE 68588-0115. E-mail: firstname.lastname@example.org.
• M. Viswanathan is with the IBM T.J. Watson Research Center, 294 Route 100, Mail Stop: SOM4/4L04, Somers, NY 10589.
Manuscript received 30 May 2008; accepted 14 July 2008; published online 22 July 2008.
Recommended for acceptance by L. O'Gorman.
For information on obtaining reprints of this article, please send e-mail to: email@example.com, and reference IEEECS Log Number TPAMI-2008-05-0314.
Digital Object Identifier no. 10.1109/TPAMI.2008.192.