**************************************** Yves-Alain Peter Postdoctoral Researcher Stanford University Edward L. Ginzton Laboratory, 32 S 450 Via Palou street Stanford, CA 94305-4085 USA Phone : + 1 650 723 1945 Fax : + 1 801 912 5730 E-mail : yap at ieee.org http://www.stanford.edu/~yapeter ****************************************