PolyRoof: Precision Roof Polygonization in Urban Residential Building with Graph Neural Networks
This work addresses the need for detailed building roof data in urban planning and mapping, though it is incremental as it builds upon an existing method.
This study tackled the problem of automated roof polygon extraction for urban residential buildings by enhancing the Re:PolyWorld method with attention-based backbones and area segmentation loss, resulting in improved point position accuracy (1.33 pixels), line distance accuracy (14.39 pixels), and a reconstruction score of 91.99%.
The growing demand for detailed building roof data has driven the development of automated extraction methods to overcome the inefficiencies of traditional approaches, particularly in handling complex variations in building geometries. Re:PolyWorld, which integrates point detection with graph neural networks, presents a promising solution for reconstructing high-detail building roof vector data. This study enhances Re:PolyWorld's performance on complex urban residential structures by incorporating attention-based backbones and additional area segmentation loss. Despite dataset limitations, our experiments demonstrated improvements in point position accuracy (1.33 pixels) and line distance accuracy (14.39 pixels), along with a notable increase in the reconstruction score to 91.99%. These findings highlight the potential of advanced neural network architectures in addressing the challenges of complex urban residential geometries.