Title
Atmospheric Correction Inter-Comparison Exercise.
Abstract
The Atmospheric Correction Inter-comparison eXercise (ACIX) is an international initiative with the aim to analyse the Surface Reflectance (SR) products of various state-of-the-art atmospheric correction (AC) processors. The Aerosol Optical Thickness (AOT) and Water Vapour (WV) are also examined in ACIX as additional outputs of AC processing. In this paper, the general ACIX framework is discussed; special mention is made of the motivation to initiate the experiment, the inter-comparison protocol, and the principal results. ACIX is free and open and every developer was welcome to participate. Eventually, 12 participants applied their approaches to various Landsat-8 and Sentinel-2 image datasets acquired over sites around the world. The current results diverge depending on the sensors, products, and sites, indicating their strengths and weaknesses. Indeed, this first implementation of processor inter-comparison was proven to be a good lesson for the developers to learn the advantages and limitations of their approaches. Various algorithm improvements are expected, if not already implemented, and the enhanced performances are yet to be assessed in future ACIX experiments.
Year
DOI
Venue
2018
10.3390/rs10020352
REMOTE SENSING
Keywords
Field
DocType
remote sensing,atmospheric correction,processors inter-comparison,surface reflectance,aerosol optical thickness,water vapour,Sentinel-2,Landsat-8
Atmospheric correction,Optical depth,Climate change,Aerosol,Remote sensing,Satellite observation,Reflectivity,Geology,Strengths and weaknesses,Water vapor
Journal
Volume
Issue
ISSN
10
2
2072-4292
Citations 
PageRank 
References 
9
0.77
5
Authors
15