Digital image processing techniques for landslides characterization in Rio de Janeiro Region, Brazil

Thiago P. de Araujo (1) , Fernando Machado de Mello (2) , Essaïd Bilal (3, 4, 5)

1 RHG - Recursos Hídricos e Geotecnia
2 Instituto de Geociências [São Paulo]
3 SPIN-ENSMSE - Centre Sciences des Processus Industriels et Naturels
4 GSE-ENSMSE - Département GéoSciences et Environnement
5 EVS - Environnement, Ville, Société

The use of images by orbital remote sensing has shown great utility in environmental geology and engineering by mapping surveys and researches. The advantage of employing such remote sensing technique is due not only to its wider coverage area but also to its high spatial resolution quality, allowing a range of possibilities by means of operations among electromagnetic bands. The main purpose of this paper is to do comparisons among Landsat images of TM and ETM+ sensors, in Rio de Janeiro Region, Brazil, by means of color compositions that come from IHS-RGB Transformation and compositions that come from Ratios Band as well. Our studies point that ETM+ images presented better results in landslides studies due to their better accuracy in comparison to TM images.

Mots clés: Environmental Geology; Remote Sensing; IHS-RGB Transformation; Landslides; Rio de Janeiro; Environmental Geology.

Domaines: Génie des procédés; Géochimie; Milieux et Changements globaux

Thiago P. de Araujo, Fernando Machado de Mello, Essaïd Bilal. Digital image processing techniques for landslides characterization in Rio de Janeiro Region, Brazil. 14º Congresso Brasileiro de Geologia de Engenharia e Ambiental, Dec 2013, Rio de Janeiro, Brazil. pp.PAP014122. ⟨hal-00948015⟩