This book contains invited papers and a selection of research papers submitted to Computer Animation '92, the fourth international workshop on computer animation held in Genova on May 20-22, 1992. This workshop, now an annual event, is organized by the Computer Graphics Society, the University of Genova, and the Swiss Federal Institute of Technology in Lausanne. Original research results and applications experience to the various areas of computer animation are represented in the book. This year most contributions are related to physics-based animation, human animation, and geometric modelling for animation.