Previous affiliations:

• January 1, 2000 – May 31, 2001:

Utrecht University

Department of Mathematics

Budapestlaan 6

NL-3584 CD Utrecht

The Netherlands

• January 1, 1997 – December 31, 1999:

Utrecht University

Department of Computer Science

Padualaan 14

NL-3584 CH Utrecht

The Netherlands

• January 1, 1996 – December 31, 1996:

University of Copenhagen

DIKU

Universitetsparken 1

DK-2100 Copenhagen

Denmark

• October 1, 1994 – December 31, 1995:

University of Aveiro

INESC

PT-3810 Aveiro

Portugal

• January 1, 1994 – September 30, 1994:

INRIA Sophia-Antipolis

Robotvis

Route des Lucioles 2004

F-06902 Sophia-Antipolis

France

• September 1, 1989 – December 31, 1993:

Utrecht University

Image Sciences Institute

Heidelberglaan 100

NL-3584 CX Utrecht

The Netherlands