面向头盔式虚拟现实的OsgEarth立体视觉生成方法

OsgEarth Stereoscopic Vision Generation Method for HMD-based Virtual Reality

基于头盔显示器的沉浸式虚拟现实技术近年来逐渐成为研究热点,但目前其视觉系统开发主要是基于商业游戏引擎。OsgEarth是一款开源、先进、并得到广泛应用的数字地球仿真系统,研究全球地形环境的虚拟现实视觉生成方法,重点研究:立体视觉理论;全球高精度虚拟地理环境构建方法;双目观察视景体计算方法;软硬件系统集成。所提出的方法已经在PC和HTC VIVE等硬件条件下成功得到验证,能够正确地生成全球虚拟地理环境的立体视觉图像,让用户身临其境地在全球范围漫游浏览。

The technology of immersive virtual reality based on helmet mounted display(HMD) has become a focus of study, however, its visual content is mainly produced through commercial game engines.OsgEarth is an open-source, state-of-the-art and widely used digital earth simulation system. Based on this, we studies the stereoscopic vision generation method for global virtual terrain environment, mainly focusing on: stereoscopic vision theory;construction of global high-precision virtual geographical environment;calculation of binocular view frustrum;system integration. The proposed method is verified under the hardware conditions of PC and HTC VIVE, which can generate stereo images of the global virtual geographic environment correctly, and can allow users to have immersive experience of roaming the earth.