CEOS-WGCV ACIX II - CMIX:
ACIX and CMIX are international collaborative initiatives to inter-compare a set of atmospheric correction (AC) and cloud masking (CM) algorithms for high-spatial resolution optical sensors. The exercises will focus on Sentinel-2 and Landsat-8 data over a set of test areas. The inter-comparison of the derived cloud masks is expected to contribute to a better understanding of strengths and weaknesses of different algorithms and ultimately to contribute to a reduction of a major error source for atmospheric correction and surface parameter retrievals. Similarly, the study of Bottom-of-Atmosphere (BOA) products will assist in understanding the different uncertainty contributors and improving the AC processors.
Objectives and Expected Outcomes
The exercises will bring together the developers of CM and AC algorithms and related software processors. The corresponding protocols will be defined together by coordinators and participants and it is mandatory to be followed by all the participants of the exercises. The input data will be Landsat-8, Sentinel-2A and -2B products of various test sites, covering various land cover types, i.e. agricultural, coastal, snow, water, deserts etc. The participants will generate the corresponding CM and BOA products which will be validated following the protocol.
Objectives of the 1st Workshop
To discuss and elaborate concepts, protocols and guidelines for the inter-comparison and validation of CM and BOA products.
Expected Outcomes of the 1st Workshop
Schedule and Deadline
The exercises will be performed in three phases: