During the summer of 1990, he was a visiting researcher at the MIT Advanced Television Research Program. In July 1991, he joined the Signal Processing Laboratory at the EPFL as a PhD student.
H is major research interests include image and video coding, and source modeling.
He is preparing his PhD dissertation on Composite Source Modeling for entropy coding. The areas of application are subband image coding, lossless image coding, and general purpose lossless data compression. He holds one patent.