Design And Implementation Of 3D Simulation System For 3D Scene Task Planning

The progress of computer graphics has promoted the development of simulation software.Traditional simulation software rendering results are usually displayed on flat-panel displays.Users cannot directly obtain the depth information of the scene when viewing,which reduces the perception efficiency.The naked-eye 3D display technology can present a stereoscopic image to the user without additional equipment,which greatly enhances the user’s perception efficiency of the scene.With the improvement of urbanization,urban development will also face more and more problems,such as regional planning of urban construction,scheduling and allocation of public resources,etc.The threedimensional visualization of the city through simulation software can make the planning of the above tasks more intuitive and convenient.Based on the OpenSceneGraph(OSG)rendering engine,this paper builds a 3D simulation system for 3D scene task planning,simulates the battlefield scene,and presents the rendering results on both flat-panel displays and naked-eye 3D light field display devices.The simulation system consists of four subsystems:1.3D geographic information subsystem,which will be responsible for rendering the 3D earth model,and realize the loading and rendering functions of geographic information data,including satellite image data and digital elevation model.Realize the display of topography and landforms at any location in the world,and simulate more realistically city environment.2.Model subsystem,which is responsible for the loading and transformation of 3D models.It includes ordinary 3D models and oblique photography models that are closer to reality.Through this system,users can add related models to the scene,simulate various buildings and other facilities in the city.3.Annotation subsystem,which is responsible for rendering annotation information and is mainly used for location annotation in various planning tasks.4.Light field rendering subsystem,which will realize multi-view rendering and light field encoding,and finally display the 3D scene in the light field display device.After testing,the system can realize the above functions normally,present the three-dimensional scene and urban task planning on the flatpanel display and the light field display device at the same time,provide users with multi-angle three-dimensional images,and bring users a smooth interactive experience.After testing,the system can maintain a real-time frame rate of 24 frames per second in a scene with about 50 million vertices.