基于XR技术的交互式地质场景模型构建方法研究

The construction method of interactive geological scene model based on XR technology

扩展现实技术(XR)是虚拟现实(VR)、混合现实(MR)和增强现实(AR)技术的总称。随着计算机硬件和软件的发展,这些技术逐渐走入大众视野,被应用到各大领域。在地学中,XR技术能够让抽象概念更直观动态地展示出来,对地质数据可视化、地理信息交互、地学教育有非常好的促进作用。本文介绍了这些技术的基本概念、技术手段及在地学中的应用,为地学中使用XR技术提供技术认知,提出了可在XR技术中使用的交互方案,并选用了江苏丹阳第四系地质模型在XR里各自制作了测试场景。从地学工作者视角对IdeaVR、Unity 3D和UnrealEngine 4三款引擎进行对比,列举其各自优势,展示3种技术平台的制作过程、交互方式、展示效果及使用场景,并就地质模型导入通用引擎可能遇到的难点问题提出解决方案。

The Extended Reality Technology XR includes Virtual Reality VR Augmented Reality AR and Mixed Reality MR.With the development of computer hardware and software these technologies have gradually entered the public view and have been applied to various fields.XR technology can make abstract concepts more intuitively and dynamically in geoscience,which can promote geological data visualization,geographic information interaction and geoscience education.This paper introduces the basic concepts and technical means of these technologies,as well as the current situation of the development of Extended Reality Technology in the geoscience,and advanced several interaction patterns in extended reality technology.Besides,in this paper we choose Danyang Quaternary System model to build three demos in each VR,AR and MR devices with each 33D-Engines:IdeaVR,Unity 3D and UnrealEngine,explore the characteristics,advantages and disadvantages of the three technology platforms,and summarize the practical methods suitable for geoscience display.This paper also proposes solutions to the problems that may occur when geological data are imported into a 3D engine.