Terrestrial Scanning / Archaeology & Cultural Heritage

Parametric Vector Modelling of Laser and Image Surveys 26.11.2007

Current research into automated recording and surveying techniques has been promoted by CIPA which is the International Scientific Committee for Documentation and Architectural Photogrammetry (CIPA) and is a joint committee set up by the International Council on Monuments and Sites (ICOMOS) and the International Society for Photogrammetry and Remote Sensing (ISPRS). The current research within CIPA promotes the development and application of laser scanning and digital photomodelling for recording architectural heritage, which is emerging as an innovative and novel solution for automating the process of surveying and recording large amounts of architectural data.A method to improve automation of vector mapping by plotting parametric vector objects on to the point cloud is examined in this paper. This study is based on a laser scan and image-based survey of 17th century classical architecture in Dublin. The survey was realized by using The parametric objects are created from the geometry of the point cloud correlated with the historic design principles of classical architecture and then directly mapped on to the point cloud survey. The laser survey can only record the surface of the object; construction details behind the surface can be detected from historic data, thus producing a full 3D and orthographic vector survey of an object or building.