Integration of Mobile and Aerial LiDAR for Large-Scale Photorealistic Urban Modeling

集成移动激光雷达和航空激光雷达进行大规模真实城市建模

• 批准号: 435793-2013
• 负责人: Wang, Ruisheng
• 金额: $ 1.75万
• 依托单位: University of Calgary
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=574182
• 关键词: Integration; Mobile; Aerial; LiDAR; Large

The interest in generating 3D models has been motivated by a wide range of applications such as urban planning and GIS. In recent years, the demand for 3D photorealistic building models has dramatically increased. These needs arise particularly from 3D GPS navigation systems and on-line services such as Nokia, Google, and Apple maps. According to Parks Associates (2010), the number of Smartphone users worldwide is predicted to exceed 1 billion by 2014. The mobile location based services (MLBS) including advertising and marketing is to generate multi-billion revenues, as a recent report from Juniper Research showing that the market of MLBS is expected to reach more than $12.7 billion by 2014. Maps are the backbone of the location based services, where the three dimensional maps are one of the most important features in the next generation maps. To date, no efficient solutions are able to fully automate the creation of photorealistic building models with ground-level details from LiDAR (Light Detection And Ranging). Automatic methods could significantly increase productivity, reduce costs, and be of enormous interest to location based service providers. Mobile LiDAR is a rapidly emerging technology in which multiple sensors mounted on a vehicle collect 3D and visual data while vehicles drive at the posted speed. The ability to produce accurate geo-referenced 3D points with sufficient detail at ground level makes mobile LiDAR an ideal data source for detailed façade modeling. Yet, due to the line-of-sight issue of ground-based data acquisition system, it is difficult to always obtain complete and sufficient data from all the building surfaces such as rooftops. The combination of mobile and aerial LiDAR will contain information from both a top-down perspective and a street-level view, which therefore is a valuable data source for large-scale photorealistic urban modeling. This proposal investigates three key issues in automatic creation of 3D photorealistic building models at city-scale using mobile and aerial LiDAR: 1) automatic mobile-to-aerial LiDAR registration, 2) automatic photorealistic building model generation, and 3) automatic texture selection and mapping.

产生3D模型的兴趣是由城市规划和GIS等广泛应用的激励。近年来，对3D逼真的建筑模型的需求已大大增加。这些需求尤其来自3D GPS导航系统和在线服务，例如诺基亚，Google和Apple Maps。根据Parks Associates（2010年）的说法，到2014年，全球智能手机用户的数量预计将超过10亿。基于移动位置的服务（MLB）包括广告和营销，将产生数十亿美元的揭示，这是杜松研究的最新报告，显示MLB的市场预计将超过2014年的MAPS，即在Back by by Back。下一代地图中的重要功能。迄今为止，尚无有效的解决方案能够通过LIDAR（光检测和范围）的地面细节来完全自动化影视式建筑模型的创建。自动方法可以显着提高生产率，降低成本并引起基于位置服务提供商的浓厚兴趣。 移动激光雷达（Mobile LiDar）是一项快速新兴的技术，在车辆以张贴的速度行驶时，将多个传感器安装在车辆上，并收集3D和视觉数据。在地面上产生足够细节的精确地理参考的3D点的能力使移动雨龙成为详细的立面建模的理想数据源。然而，由于基于地面数据采集系统的视线问题，很难始终获得完整的完整和1）自动移动到意见的LIDAR将包含从自上而下的角度和街道级别的视图中包含信息，因此，这是大规模的耐心城市化城市建模的有价值的数据源。该提案研究了使用移动和空中雷达在城市尺度自动创建3D逼真的建筑模型的三个关键问题：1）自动移动到壁炉式激光雷达注册，2）2）自动逼真的建筑模型生成，以及3）自动纹理选择和映射。