Current watermarking technology focuses on those media types like text, images, video and audio streams. Just a little attention has been paid for watermarking of 3D models from researchers. With the rapid development of virtual reality, cooperative design and Web3D, more and more CAD data and digital products are entering the World Wide Web, and watermarking for geometry-based 3D models is becoming a new hotspot.This dissertation analyzes the basic principle and methods of watermarking for 3D geometry mode...