Paper Info
Title
Comparison of Cloud Cover Detection Algorithms on Sentinel-2 Images of the Amazon Tropical Forest.
Abstract
Tropical forests regulate the global water and carbon cycles and also host most of the world's biodiversity. Despite their importance, they are hard to survey due to their location, extent, and particularly, their cloud coverage. Clouds hinder the spatial and radiometric correction of satellite imagery and also diminishing the useful area on each image, making it difficult to monitor land change. For this reason, our purpose is to identify the cloud detection algorithm best suited for the Amazon rainforest on Sentinel-2 images. To achieve this, we tested four cloud detection algorithms on Sentinel-2 images spread in five areas of the Amazonia. Using more than eight thousand validation points, we compared four cloud detection methods: Fmask 4, MAJA, Sen2Cor, and s2cloudless. Our results point out that FMask 4 has the best overall accuracy on images of the Amazon region (90%), followed by Sen2Cor's (79%), MAJA (69%), and S2cloudless (52%). We note the choice of method depends on the intended use. Since MAJA reduces the number of false positives by design, users that aim to improve the producer's accuracy should consider its use.
Year
DOI
Venue
2020
10.3390/rs12081284
REMOTE SENSING
Keywords
DocType
Volume
remote sensing,amazon forest,clouds,Sentinel-2,Fmask,Sen2Cor,MAJA,s2cloudless
Journal
12
Issue
Citations 
PageRank 
8
0
0.34
References 
Authors
0
11
Name
Order
Citations
PageRank
Alber Sánchez100.34
Michelle Cristina Araújo Picoli200.34
Gilberto Câmara300.34
Pedro Ribeiro de Andrade Neto400.34
Michel Eustáquio Dantas Chaves500.34
Sarah Lechler601.01
Anderson R. Soares700.34
Rennan F. B. Marujo800.34
Rolf Ezequiel O. Simões900.34
Karine Reis Ferreira102213.00
Gilberto Ribeiro De Queiroz11910.27