基于沉浸式增强现实的流场可视化方法  

Flow Visualization Method Based on Immersive Augmented Reality

作　　者：许世健 吴亚东 赵丹[3] 王赋攀[1] XU Shijian;WU Yadong;ZHAO Dan;WANG Fupan(School of Computer Science and Technology,Southwest University of Science and Technology,Mianyang,621010,China;School of Computer and Engineering,Sichuan University of Science and Engineering,Zigong,643002,China;China Aerodynamics Research and Development Center,Mianyang,621000,China)

机构地区：[1]西南科技大学计算机科学与技术学院,绵阳621010 [2]四川轻化工大学计算机科学与工程学院,自贡643002 [3]中国空气动力研究与发展中心,绵阳621000

出　　处：《南京航空航天大学学报》2020年第5期714-722,共9页Journal of Nanjing University of Aeronautics & Astronautics

基　　金：国家自然科学基金面上(61872304,61802320)资助项目;国防科技基金(19zg6105,19zg6106)资助项目;四川省重大科技专项基金(2018GZDZX0039)资助项目;国家数值风洞工程资助项目。

摘　　要：针对目前二维环境中流场可视化应用深度信息不足、交互不自然等问题,提出一种基于沉浸式增强现实的流场可视化方法,在现实空间中通过流线展示流场变化特征,利用沉浸式增强现实技术为用户提供有效的深度信息,并通过手势、凝视等自然交互方式进行流线布置。由于增强现实设备不具备流场可视化计算所需要的计算能力,该方法采用服务器/客户端架构,以服务器端进行流线计算,以头戴增强现实设备进行流线定位、结果绘制及用户交互。在此基础上,设计了基于用户凝视的流线布置和基于凝视与手势的种子点放置两种交互方式,利用自然交互提高用户流线布置及分析效率。实验结果表明该方法能够在增强现实环境中准确完成流线绘制,反映流场的变化情况,并提供快捷、自然的交互。To address the problem of insufficient depth information and unnatural interaction by using the current flow visualization application in two dimensional environment,a flow visualization method based on immersive augmented reality is proposed.This method displays the characteristics of flow field changes in the real space through streamlines,uses the immersive augmented reality technology to provide users with effective depth information,and arranges the streamlines through natural interaction methods such as gestures and gaze.And the method uses the Server/Client architecture,in which the server is used for streamline computing and the head-set augmented reality device is used for streamline registration,result display and user interaction.Finally,an original system is developed based on the method.The streamline placement method based on user gaze and the seed placement method based on user gaze and gesture are designed.The interaction methods take advantage of the natural interaction to improve the user’s efficiency in streamline arrangement and data analysis.The results indicate that the method can accurately complete the streamline rendering in immersive augmented reality environment,reflect the change of the flow field and provide users with natural interaction.

关 键 词：流场可视化 增强现实 人机交互 流线 

分 类 号：TP399[自动化与计算机技术—计算机应用技术]