基于共享资源的灌区三维地理场景构建

在三维虚拟场景中进行灌区日常任务的模拟优化、设计分析更符合人们的认知习惯,能提供更丰富的展现手法与更多的信息量,可以弥补传统方法难以表达复杂、宏大场景、资金投入大、持续周期长等不足。综述了用来构建三维虚拟场景的技术,并提出综合利用GIS(Geographic Information System)、RS(Remote Sensing)技术、虚拟现实技术,基于共享资源,采用数据融合、混合建模、交互式一体化建模等方法来构建灌区三维虚拟环境的技术路线。该技术路线较为简单、快捷,能充分利用、发挥共享资源的作用,不需要构建特殊硬软件环境就能满足灌区日常运行与管理的需求。构建的灌区三维虚拟场景对提升灌区服务管理水平与科学决策能力具有借鉴意义。

Creating 3D Geographical Environment of Irrigation Area Based on Shared Resources

Traditional methods in irrigation area using 2D management technology can not express complex and grand scenes fully due to the shortage of cubic spatial information. This problem stands out especially along with the ever-increasing complexity of irrigational routine tasks. Three-dimensional (3D) Virtual reality(VR) which makes the analysis and simulation of the routine tasks more effective and visually perceptual is, therefore, a matter of urgent concern. In the paper, methods and technologies used for building 3D virtual environment were reviewed and analyzed, and a technical route based on shared resources to generate complex geographical 3D virtual environment in irrigation area was proposed by synthetically integrating Geographic Information System(GIS), Remote sensing(RS), and Virtual reality(VR), as well as applied hybrid modeling and data fusion methods. Being compact and practical, the proposed technology takes advantage of shared resources, which enables us to build a 3D virtual environment for meeting the route tasks in irrigation area in no need of special software and hardware. This would be beneficial for improving the level of irrigation area management and scientific decision making.