Many geographic features such as 3D city models, real-time sensor data and multimedia documents (photo, audio, video, etc.) are nowadays available for describing urban areas. These heterogeneous geographic features are multidimensional (spatial, thematic and temporal), can have multiple representations (text, iconography, etc.) and can be modeled using diverse formats. Browsing and crossing these features can help us to analyze and understand the past and present and plan the future evolution of cities. Furthermore, doing so in a web context allows us to share and enrich them in a collective way. In this article we propose a new generic model (GenLinkable) for integrating such features. We also propose the Gen4DCity-Doc model which specifies GenLinkable to integrate multimedia documents and time-evolving 3D city models for web visualization and navigation. Gen4DCity-Doc extends previous research results by integrating new resources describing cities (multimedia documents). Gen4DCity-Doc is implemented in a web prototype based on a four-tier architecture using and enhancing open source software and standards. Finally, we also demonstrate that these models open up new navigation possibilities in 3D city models and in multimedia documents through a 3D web interface, which is a current challenge, especially to help researchers in urban history.

中文翻译：

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集成多媒体文档和随时间演变的 3D 城市模型，用于 Web 可视化和导航

许多地理特征，例如 3D 城市模型、实时传感器数据和多媒体文档（照片、音频、视频等）现在可用于描述城市区域。这些异质地理特征是多维的（空间、主题和时间），可以有多种表示（文本、图像等），并且可以使用不同的格式进行建模。浏览和穿越这些特征可以帮助我们分析和理解过去和现在，并规划城市的未来演变。此外，在网络环境中这样做允许我们以集体方式共享和丰富它们。在本文中，我们提出了一个新的通用模型 ( GenLinkable ) 来集成这些功能。我们还提出了指定GenLinkable的Gen4DCity-Doc模型集成多媒体文档和随时间演变的 3D 城市模型，用于 Web 可视化和导航。Gen4DCity-Doc通过整合描述城市的新资源（多媒体文档）扩展了之前的研究成果。Gen4DCity-Doc在基于四层架构的 Web 原型中实现，使用和增强开源软件和标准。最后，我们还证明了这些模型通过 3D 网络界面在 3D 城市模型和多媒体文档中开辟了新的导航可能性，这是当前的挑战，尤其是帮助城市历史研究人员。