Extraction of building roof edges from LiDAR data to optimize the digital surface model for true orthophoto generation

Various kinds of urban applications require true orthophotos. True orthophoto generation requires a DSM (Digital Surface Model) to project the photo orthogonally and minimize geometric distortion due to topographic variance. DSMs are often generated from airborne laser scan data. In urban scenes, DSM data may fail to deliver sharp and...

The Vectorial Segmentation of Buildings in Vila Cafezal Informal Settlement Aimed at 3D Cadastre Creation

The informal settlement is a degraded public or private owned area of a particular city characterized by substandard housing, lack of infrastructure and without land tenure regularization. It is a characteristic of urban settlement that emerged in the early twentieth century, a consequence of the process of uneven economic development between...