RAPID: Laser Scanning Technology for Damage Assessment after the January 12, 2010 Haiti Earthquake

该项目的重点是使用激光扫描仪测量空间中的大型物体，这是地震后结构评估的重要属性。作为激光扫描的结果，提供了代表结构的3D点云？S曲面。我们将使所有激光扫描以测量级别的精度进行地理参考，从而允许我们创建照片图像和激光扫描的组合数据库。我们将扫描一系列不同受损状态的建筑物，特别是在太子港的两个样本区，这是世界银行以前通过航拍照片和两名小组成员使用实地监测进行的调查。在这两个城市街区，大约有45栋建筑处于不同的破坏状态。这项工作的一个目标是看看扫描是否是证实航空调查造成的损害的适当方式。该项目将首次介绍高清晰度激光扫描的使用情况，以及在发生重大灾害后在侦察工作中使用这一先进技术的优点和困难。这一独特的现场测量部署将为基于图像的遥感评估和未来利用本项目收集的详细数据对结构系统进行损害评估的能力的提高提供一个重要基准。激光扫描和其他常规数据，例如材料性能和设计数据的收集，将提高我们在美国或世界各地发生类似灾难时的准备能力。收集到的信息将有助于指导美国为海地重建提供援助。

The project focuses on using laser scanners capable of measuring large objects in space, an important attribute for structural assessment after an earthquake event. A 3D point cloud representing the structure?s surface is delivered as the outcome of the laser scanning. We will have all laser scans geo-referenced at surveying grade accuracy allowing us to create a combined database of photo images and the laser scans. We will scan an array of buildings in different damage states, particularly in two of the sample blocks in Port-au-Prince previously surveyed by both the World Bank from the aerial photos and by two members of the team using on-the-ground surveillance. There are approximately 45 buildings in these two city blocks with a range of damage states. One objective of this effort is to see if the scanning would be an appropriate way to corroborate damage from aerial surveys. The project will provide information for the first time on the use of high definition laser scanning and the merits and difficulties of using this advanced technology in a reconnaissance effort after a major disaster. This unique deployment of field measurements will provide an important benchmark for image-based remote sensing evaluation and future advancement of our capabilities for damage assessment of structural systems using the collected detailed data in this project. The laser scanning and other conventional data, e.g. material properties and collection of design data will improve our preparedness in situations of similar disasters in the US or worldwide. The information gathered will be instrumental in guiding the delivery of US aid for the reconstruction of Haiti.