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: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=668124
• 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.************************

兴趣3D模型已被城市规划和GIS等广泛的应用程序所吸引。根据Parks Associates（2010年）的说法，到2014年。基于移动位置的服务（MLB），包括广告和市场营销，将产生数十亿美元的收入，杜松研究报告显示TOT到2014年达到127亿美元。基于位置的服务的骨干是树的尺寸地图是迄今为止下一代地图中最重要的功能之一。范围）自动方法可以大大提高生产力，将基于位置的服务提供商降低成本能够在地面上生产具有足够细节的精确的3D点，这使得移动LIDAR成为详细的立面模型的纪念数据源，可以始终从所有建筑物表面（例如Rootops）中填写和足够的数据空中激光雷达将是自上而下的视角，而街道级别的偏好是大规模逼真的城市建模的有价值的数据源：1）自动移动到意见乳酸离子，2）自动逼真的建筑模型生成，3）自动纹理选择和映射。 ********