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High-Resolution Remote Sensing, Deep Learning and Geomorphometry in Analyses of Mass Movements and Geological Risk

Grant number: 19/26568-0
Support type:Regular Research Grants
Duration: February 01, 2021 - January 31, 2023
Field of knowledge:Physical Sciences and Mathematics - Geosciences
Principal Investigator:Carlos Henrique Grohmann de Carvalho
Grantee:Carlos Henrique Grohmann de Carvalho
Home Institution: Instituto de Energia e Ambiente (IEE). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Assoc. researchers: Daniel Hölbling ; FRANCISCO MANOEL WOHNRATH TOGNOLI ; John Lindsay ; José Alberto Quintanilha ; Marcelo Fischer Gramani

Abstract

The development of remote sensing technologies in the last decade has lead to an exponential growth of available information about the Earth's surface. Among such advances, one can mention high-resolution orbital imagery with stereoscopic geometry allowing the generation of Digital Elevation Models (DEMs), airborne or terrestrial LiDAR (Light Detection And Ranging), and, more recently, applications of Structure from Motion--Multi View Stereo (SfM-MVS) to images acquired by Remotely Piloted Aircrafts (RPAs).In this research project, we propose the application of modern geo-spatial tools -- high-resolution Remote Sensing based on RPAs, terrestrial and RPA-borne LiDAR, SfM-MVS, Deep Learning and cloud computing, -- in the analysis of mass movements (landslides) and geological risk.The subjects selected for study include: multi-sensor (SfM-MVS, LiDAR-RPA) and temporal mapping of a landslide area active for over 20 years in the coastal city of São Sebastião (São Paulo State); comparative of airborne LiDAR and SfM-MVS 3D models from two distinct dates in two urban low-income areas identified as highly susceptible to mass movements (in collaboration with the Civil Defense of São Paulo); image classification and segmentation by GEOBIA and deep learning towards semi-automatic creation of landslides inventories. The project, with a two-year schedule, will be conducted by the principal researcher and his students, in collaboration with professors/researchers/students from USP, Unisinos, Salzburg University (Austria), and Guelph University (Canada). (AU)