Cloud masking

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(Sentinel-2 cloud masking)
(Sentinel-2 cloud masking)
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== Sentinel-2 cloud masking ==
 
== Sentinel-2 cloud masking ==
 
The exclusion of clouds and cloud shadow is an important processing step which is usually done in an early preprocessing stage.
 
The exclusion of clouds and cloud shadow is an important processing step which is usually done in an early preprocessing stage.
The Sentinel-2 products are annotated with Quality Indicators (QI_DATA). In the Level 2A product you may find a file in the folder '''QI_DATA''' with the extension '''_CLD_20m.jp2''' (data type: 8bit unsigned integer, spatial resolution 20m) which might be used for masking clouds. The data range is from 0 for high confidence clear sky to 100 for high confidence cloudy. [[L2A Product Definition Document https://earth.esa.int/documents/247904/685211/S2+L2A+Product+Definition+Document/2c0f6d5f-60b5-48de-bc0d-e0f45ca06304]]  
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The Sentinel-2 products are annotated with Quality Indicators (QI_DATA). In the Level 2A product you may find a file in the folder '''QI_DATA''' with the extension '''_CLD_20m.jp2''' (data type: 8bit unsigned integer, spatial resolution 20m) which might be used for masking clouds. The data range is from 0 for high confidence clear sky to 100 for high confidence cloudy (see[[https://earth.esa.int/documents/247904/685211/S2+L2A+Product+Definition+Document/2c0f6d5f-60b5-48de-bc0d-e0f45ca06304 L2A Product Definition Document]]).
  
  
 
[[Category:QGIS Tutorial]]
 
[[Category:QGIS Tutorial]]

Revision as of 09:48, 12 November 2017

Sentinel-2 cloud masking

The exclusion of clouds and cloud shadow is an important processing step which is usually done in an early preprocessing stage. The Sentinel-2 products are annotated with Quality Indicators (QI_DATA). In the Level 2A product you may find a file in the folder QI_DATA with the extension _CLD_20m.jp2 (data type: 8bit unsigned integer, spatial resolution 20m) which might be used for masking clouds. The data range is from 0 for high confidence clear sky to 100 for high confidence cloudy (see[L2A Product Definition Document]).

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