论文标题
使用IRS LISS IV和CARTO DEM对花岗岩地形进行三维形态分析的网格加工策略和分形
Mesh Processing Strategies and Fractals for Three Dimensional Morphological Analysis of a Granitic Terrain using IRS LISS IV and Carto DEM
论文作者
论文摘要
启用虚拟现实（VR）应用程序对于可视化3D中的地形特征变得非常重要。通常，由高分辨率卫星生成的3D数据集和DEM占据了大量数据。但是，需要轻巧的数据集来在VR平台上创建更好的用户体验。因此，本研究开发了一种使用印度遥感卫星（IRS）传感器生成与VR兼容的数据集的方法。线性成像自扫描系统-IV（LISS IV）具有5.8 m空间分辨率和Carto DEM用于使用ARC环境生成3D视图，然后转换为虚拟现实建模语言（VRML）格式。为了减少VRML数据集的体积，应用了二次边缘塌陷方法，该方法可以减少网格中的面部数量，同时保留边界和/或正常。海得拉巴西南部的一个花岗岩地形被认为是用于生成3D VR数据集的，因为它具有较高的海拔差异，因此最适合本研究。此外，研究了增强的地貌特征，例如山丘和山谷，地质结构，例如断裂，侵入性（堤坝），并发现适合更好地解释。
Virtual Reality (VR) enabled applications are becoming very important to visualize the terrain features in 3D. In general 3D datasets generated from high-resolution satellites and DEM occupy large volumes of data. However, lightweight datasets are required to create better user experiences on VR platforms. So, the present study develops a methodology to generate datasets compatible with VR using Indian Remote Sensing satellite (IRS) sensors. A Linear Imaging Self-Scanning System - IV (LISS IV) with 5.8 m spatial resolution and Carto DEM are used for generating the 3D view using the Arc environment and then converted into virtual reality modeling language (VRML) format. In order to reduce the volume of the VRML dataset a quadratic edge collapse decimation method is applied which reduces the number of faces in the mesh while preserving the boundary and/or normal. A granitic terrain in the south-west part of Hyderabad comprising of dyke intrusion is considered for the generation of 3D VR dataset, as it has high elevation differences thus rendering it most suitable for the present study. Further, the enhanced geomorphological features such as hills and valleys, geological structures such as fractures, intrusive (dykes) are studied and found suitable for better interpretation.
