AARON E. WALSH is Chairman of Mantis Development Corporation, a development firm specializing in advanced multimedia and network technologies. Walsh is Chairman of the Web3D Consortium's Universal Media technical working group, Chairman of the Web3D-MPEG group responsible for the convergence of Web3D and MPEG technology, Co-Chair of the Web3D Intellectual Property Rights group, and Web3D Liaison to MPEG and the World Wide Web Consortium. He is author of the best-selling Core Web3D, MPEG-4 Jump-Start, and XHTML Example by Example.
DOUG GEHRINGER is a Staff Engineer at Sun Microsystems and a member of the Java 3D API Engineering Team. He has spent the past 14 year, at Sun working on graphics software and has extensive experience programming for all of Sun's graphics APIs, including GKS, PHIGS, PEX, OpenGL, and the Java 3D API. An expert on graphics performance tuning for large-scale applications, he has worked on a number of the largest Java 3D API projects in existence. One of the first developers in the world to use the Java 3D API, he co-authored the original Virtual Reality Modeling Language (VRML) loader that is today maintained by the Web3D Consortium.