Abstract
In Japan, the airborne laser has been carried out for the class-A rivers nationwide for the purposes of verifying the cause of the flood associated with climate change and torrential rain, and suppressing the damage. In the previous research, by recognizing crosswise and continuously the topography obtained from point cloud data, it is possible to generate a three-dimensional model on river with high accuracy. Meanwhile, as the Ministry of Land, Infrastructure, Transport and Tourism promotes full use of ICT, it has developed specifications and standards related to three-dimensional model called CIM. As one of these standards, there is a three-dimensional design data exchange standard that establishes the data structures and formats of electronic delivery data relating to river projects. Thus in this research, we propose a method to detect objects on river embankment from point cloud data. This makes it possible to generate three-dimensional models that can be compared with three-dimensional design data exchange standard expected to become widespread in the future, and promote the full use of the accumulated point cloud data.
