Gregor Hofer's Homepage

I have recently started my own company, called Speech Graphics with my colleague Michael Berger. We are providing Audio-driven animation solutions for the video games industry.
I am a research fellow at the Centre for Speech Technology (CSTR) in the School of Informatics at the University of Edinburgh.

Research Interests

My main research interests are the simulation of expressive behaviour and communication. Currently, I am involved in the Social Signal Processing Network of Excellence.

For my PhD I worked on automatic speech-driven Animation using Multimodal Hidden Markov Models. Some examples of my work can be found here.

For my MSc I was working on emotional speech synthesis. Some example output of the speech synthesiser can be found here.

I am also co-chairing the BMVA one day meeting on Facial Analysis and Animation

 

Publications

Technology

Hofer. G., Yamagishi, J., & Shimodaira, H.Speech-driven lip motion generation with a trajectory hmm. In Proc. Interspeech 2008, pages 2314-2317, Brisbane, Australia, September 2008.

Hofer, G., & Shimodaira, H. Automatic Head Motion Prediction from Speech Data. Interspeech, Antwerp, 2007.

Hofer, G., Shimodaira, H., & Yamagishi, J. Speech-driven Head Motion Synthesis based on a TRajectoy Model. Poster at Siggraph, Sand Diego, 2007.

Hofer, G., Shimodaira, H., & Yamagishi, J. Lip Motion synthesis using a context dependent trajectory Hidden Markov Model. Poster at SCA, Sand Diego, 2007.

Hofer, G., Richmond, K. & Clark, R. Informed Blending of Databases for Emotional Speech Synthesis. Eurospeech, Lisbon, 2005.

Hiroshi Shimodaira, Keisuke Uematsu, Shin'ichi Kawamoto, Gregor Hofer, & Mitsuru Nakai. Analysis and Synthesis of Head Motion for Lifelike Conversational Agents. MLMI2005, Edinburgh.

Psychology

Grammer, K., Tessarek, A. & Hofer, G. From emoticons to avatars: the simulation of facial expression. European Science Foundation Workshop on Emotions and New Media, Hull, 2002.

Hofer, G. Priming Effects in judging Androgynous Faces. Proceedings and Abstracts of the Annual Meeting of the Eastern Psychological Association, Boston, MA, 2001.

Hofer, G. & Harnish, R. Representative Heuristics. Proceedings and Abstracts of the Annual Meeting of the Eastern Psychological Association, Washington, D.C, 2000.