3D Surface Models for Urban Planning and Land Value Capture: A Case Study of Rio de Janeiro’s Cadastral System
Mots-clés :
Multipurpose Cadastre, 3D model, digital surface model, LiDAR, photogrammetryRésumé
This study examines Rio de Janeiro’s pioneering use of repeat airborne LiDAR surveys (2019 and 2024) to address the critical challenge of maintaining an up-to-date physical cadastre a foundational element of the Multipurpose Land Cadastre (MLC). By generating differential elevation models, the research quantifies vertical growth across the city, categorizing changes with a 3-meter threshold to reliably identify new construction floors, particularly informal additions. The analysis demonstrates that LiDAR technology is vital not only for topographic mapping but for enabling cross-checks of construction permits, identifying tax evasion, and informing land-use policies. The findings underscore that the long-term effectiveness of such geospatial tools hinges on sustained institutional commitment to regular data updates, interoperability, and systemic coordination across government agencies. Ultimately, the integration of LiDAR with the MLC represents a transformative step toward smarter, more equitable urban governance, where accurate spatial data can support fairer taxation and fund inclusive development.
