Gabriel Cristobal received the MSc and PhD degrees both in telecommunication engineering from the Polytechnic University of Madrid, Spain, in 1979 and 1986 respectively. He is currently a Research Scientist at the Instituto de Optica, Spanish Council for Scientific Research (CSIC). He was a Postdoctoral Fellow at the International Computer Science Institute and the Electronic Research Lab (UC Berkeley) from 1989 to 1992. His current research interests are joint representations, vision modelling and multidimensional signal processing. He has published more than 80 papers in technical journals and conferences. He has been responsible for several national and EU research and development projects. He is a Senior Member of the IEEE, OSA and SEDOPT member and EURASIP spanish liaison for the period 2009-2010. He is a member (and head of the Spanish delegation) of the ISO/IEC/SC29/WG01 JPEG 2000 Committee, since 2000.