The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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Articles | Volume XLIII-B1-2021
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLIII-B1-2021, 9–14, 2021
https://doi.org/10.5194/isprs-archives-XLIII-B1-2021-9-2021
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLIII-B1-2021, 9–14, 2021
https://doi.org/10.5194/isprs-archives-XLIII-B1-2021-9-2021

  28 Jun 2021

28 Jun 2021

RANDOM FOREST-BASED RIVER PLASTIC DETECTION WITH A HANDHELD MULTISPECTRAL CAMERA

I. Cortesi1, A. Masiero1, M. De Giglio2, G. Tucci1, and M. Dubbini2 I. Cortesi et al.
  • 1Dept. of Civil and Environmental Engineering, University of Florence, via di Santa Marta 3, Florence 50139, Italy
  • 2DiSCi, Geography Section, University of Bologne, Piazza San Giovanni in Monte 2, 40124, Bologne, Italy

Keywords: Multispectral camera, Plastic litter, Mapping, Random-forest, Object detection

Abstract. Plastic pollution has become one of the main global environmental emergencies. A considerable part of used plastics materials is dispersed or accumulated in the environment with a significant damaging impact on many terrestrial and aquatic ecosystems.

Artificial Intelligence has proven a fundamental approach in last years for the detection of plastics waste in the aquatic habitats: several groups have recently tried to tackle such problem by developing some machine learning-based methods and multispectral or RGB imagery. This study compares the results obtained by two machine learning classifiers, namely Random Forests and Support Vector Machine, to detect macroplastic in the fluvial habitat through multispectral imagery. The acquisition of images has been made with a hand-held multispectral camera called MAIA-WV2. Despite the obtained results are quite good in terms of accuracy in a random validation dataset, some issues, mostly related to the presence of white rocks and glares on water have still to be properly solved.