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Compactly representing massive terrain models as TINs in CityGML

机译：紧凑地代表大规模地形模型作为CityGML中的罐子

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Abstract >Terrains form an important part of 3D city models. GIS practitioners often model terrains with 2D grids. However, TINs (Triangulated Irregular networks) are also increasingly used in practice. One such example is the 3D city model of the Netherlands (3DTOP10NL), which covers the whole country as one massive triangulation with more than one billion triangles. Due to the massive size of terrain datasets, the main issue is how to efficiently store and maintain them. The international 3D GIS standard CityGML allows us to store TINs using the Simple Feature representation. However, we argue that it is not appropriate for storing massive TINs and has limitations. We focus in this article on an improved storage representation for massive terrain models as TINs. We review different data structures for compactly representing TINs and explore how they can be implemented in CityGML as an ADE (Application Domain Extension) to efficiently store massive terrains. We model our extension using UML, and XML schemas for the extension are automatically derived from these UML models. Experiments with massive real‐world terrains show that, with this approach, we can compress CityGML files up to a factor of ~20 with one billion+ triangles, and our method has the added benefit of explicitly storing the topological relationships of a TIN model. </abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><Abstract Type =“main”XML：ID =“TGIS12456-ABS-ABS-0001”XML：Lang =“en”> <标题类型=“main”>抽象</ title> >地形形成3D城市的重要组成部分楷模。 GIS从业者经常使用2D网格模拟地形。然而，罐头（三角形不规则网络）也越来越多地用于实践中。一个这样的例子是荷兰的3D城市模型（3dtop10nl），它将整个国家覆盖为一个大型三角形，具有超过10亿三角形。由于地形数据集大小，主要问题是如何有效地存储和维护它们。国际3D GIS标准CityGML允许我们使用简单的特征表示来存储罐头。但是，我们认为它不适合储存大规模罐并具有局限性。我们专注于本文，以改进的存储表示为普林斯的大规模地形模型。我们审查了不同的数据结构，以便紧凑地代表罐头，并探索如何在CityGML中作为ADE（应用程序域扩展）以有效存储大规模地形。我们使用UML模拟我们的扩展，并且扩展的XML模式会自动从这些UML模型中派生。具有大规模的现实世界的实验表明，通过这种方法，我们可以将CityGML文件压缩到20亿+三角形的一个〜20倍，我们的方法具有明确存储TIN模型的拓扑关系的额外好处。< / p> </ abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-31674/'>《Transactions in GIS: TG》</a> <b style="margin: 0 2px;">|</b><span>2018年第5期</span><b style="margin: 0 2px;">|</b><span>共27页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Kumar Kavisha&option=202" target="_blank" rel="nofollow">Kumar Kavisha;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Ledoux Hugo&option=202" target="_blank" rel="nofollow">Ledoux Hugo;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Stoter Jantien&option=202" target="_blank" rel="nofollow">Stoter Jantien;</a> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> <p>3D GeoinformationDelft University of TechnologyDelft The Netherlands;</p> <p>3D GeoinformationDelft University of TechnologyDelft The Netherlands;</p> <p>3D GeoinformationDelft University of TechnologyDelft The Netherlands;</p> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/4940.html" title="测绘数据库与信息系统">测绘数据库与信息系统;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> </p> </li> </ul> </div> </div> <div class="literature cardcommon"> <div class="similarity "> <h3 class="all_title" id="enpatent66">相似文献</h3> <div class="similaritytab clearfix"> <ul> <li class="active" >外文文献</li> <li >中文文献</li> <li >专利</li> </ul> </div> <div class="similarity_details"> <ul > <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/journal-foreign-detail/0704024965692.html">Compactly representing massive terrain models as TINs in CityGML</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Kumar Kavisha&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Kumar Kavisha,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Ledoux Hugo&option=202" target="_blank" rel="nofollow" class="tuijian_auth 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