Method and System for Virtual Roaming in Water Conservancy Works

The advances in the research of virtual roaming techniques in water conservancy works are reviewed. Main process to construct a 3D virtual environment for water conservancy works is introduced. Key techniques and the difficulties with their solutions in the application of virtual roaming techniques to water conservancy activities are analyzed and summarized. A development framework for building 3D virtual roaming system is presented to illustrate the application potentiality of virtual roaming techniques in computer aided system for water conservancy works. The methods for the visualization of complex water conservancy works environment is described in detail. Aspects like presentations of data with spatial dependence, virtual roaming in the terrain and geographical frame of reference and in time, interaction techniques are presented. An interactive virtual roaming system for the water conservancy work from China is used as an example to demonstrate the effectiveness and efficiency of the techniques discussed.