Acta Geodaetica et Cartographica Sinica ›› 2018, Vol. 47 ›› Issue (8): 1123-1132.doi: 10.11947/j.AGCS.2018.20180114

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A Construction Optimization and Interaction Method for Flood Disaster Scenes Based on Mobile VR

HU Ya1,2, ZHU Jun1,2, LI Weilian1, ZHANG Yunhao1, HU Mingyuan3, CAO Zhenyu4   

  1. 1. Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China;
    2. State-Province Joint Engineering Laboratory of Spatial Information Technology of High-speed Rail Safety, Southwest Jiaotong University, Chengdu 611756, China;
    3. Institute of Space and Earth Information Science, Hong Kong 999077, China;
    4. Sichuan Geomatics Center, Chengdu 610041, China
  • Received:2018-03-16 Revised:2018-06-11 Online:2018-08-20 Published:2018-08-22
  • Supported by:
    The National Key Research and Development Program of China (No. 2016YFC0803101);The Fundamental Research Funds for the Central Universities (No. 2682018CX35)

Abstract: The existing three-dimensional (3D) visualization of flood disaster scenes has problems such as weak immersion and lack of mobility.This paper combines mobile virtual reality (VR) with 3D visualization of flood disaster scenes,and proposes a construction optimization and interaction method for flood disaster scenes based on mobile VR.Firstly,a mobile VR scene construction scheme under a plugin-free B/S architecture is proposed.Second,certain key technologies for scene optimization are discussed,including diverse modes of scene data organization,optimization control of scene data volume and adaptive scheduling of mobile scenes.Finally,some interaction and analysis schemes based on gaze,such as scene roaming exploration and interactive flood information query,are designed.A test platform was developed and a case experiment analysis was carried out.The experiment results demonstrate that the flood disaster scene constructed by the methods addressed in this paper can be displayed smoothly and explored interactively on smart phones.

Key words: virtual geographic environments, flood disaster, mobile VR, scene optimization, interactive exploration

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