LiDAR data integration for 3D cadastre : some experiences from Brazil
Souza, Guilherme & Amilton Amorim
The processes of acquisition, storage, processing and representation of spatial data had a lot of changes in recent decades, which led to new possibilities in the use of spatial information, especially with 3D models generation of objects. From these models is possible to understand the dynamics of some phenomena and to define action strategies for interventions. In this way, the cadastral information also was influenced by this process, which has led many researchers to verify the demands and impacts on the cadastral system of so-called 3D Cadastre. This work aims to contribute to proper procedures for the incorporation of 3D information to the Urban Cadastre from the existing structure, especially in where there isnnt a cadastral model that is the Brazilian case. It is proposed to use a model for the spatial parcel using a square cylinder of revolution and a cloud points with attributes. The experiments with data obtained from LASER scanning sensors (aerial and ground platforms) to assist in the incorporation of 3D information to Cadastre were satisfactory, not only for the use of cloud points attributes for Cadastre, but by the integration of the LASER point cloud air and ground. To make the studies, test areas were selected in SSo Paulo and Curitiba. In developing the thesis, C++ libraries were used, implemented by research groups in the area of Photogrammetry and LiDAR data manipulation. The results for the labeling of points with attributes using mathematical models of the cylinder show promise for the discussion of spatial Parcel model for Cadastre, and allow incorporate 3D data to Cadastre even without Cadastral Model.
Event: FIG Working Week 2012 : Territory, environment, and cultural heritage
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