Marketplace
Sentinel-2 Enhanced Cloud Mask Generation
The block provides a more reliable identification of clouds in Sentinel-2 imagery than the cloud mask data included with the L1C and L2A products from ESA. The block processes a granule and generates an image with the same coverage indicating whether pixels are affected by clouds.
Description
Sentinel-2 Enhanced Cloud Mask Generation provides a more reliable identification of clouds in Sentinel-2 imagery than the cloud mask data included with the L1C and L2A products from ESA. The block processes a granule and generates an image with the same coverage indicating whether pixels are affected by clouds.
Technical information
The cloud identification process is based upon the Fmask algorithm, which identifies potential clouds, along with significant further modifications.
Feature | Info |
---|---|
Input parameters | The block is initiated with the identity of the granule to be processed. |
Output format | The cloud mask is provided as an 8-bit single-channel raster in GeoTIFF format. The pixel size is 40 m and the map projection is the same as the source Sentinel-2 data. Pixel encoding:- nodata=0 / - cloud-free=40 / - cloud-affected=240 |
Training dataset | The improved cloud identification is based upon published methods. |
Performance
The enhanced cloud identification generally provides better results than the ESA L1C cloud masks with much reduced occurrence of omission errors. The enhanced cloud identification also provides overall better results than the ESA L2A cloud masks with much reduced commission errors over bright targets, such as urban areas. Areas with mist or with clouds close to the ground can suffer from omission errors.
Use cases
Clouds pose a major challenge to the use of satellite imagery and can be detrimental to automated processing that rely on processes such as spectral analysis, change detection or object detection. The Sentinel-2 Enhanced Cloud Mask is spatially coincident with the source Sentinel-2 data and therefore can be used directly to identify cloud-free pixels in applications that process Sentinel-2 imagery.
More information
For more information about this processing block, please see the provider website.
Capabilities
Input Capabilities
raster
up42_standard
- format
SAFE
- sensor
Sentinel2
- resolution
10
- processing_level
l1
Output Capabilities
raster
custom
- bands
[ "cloudmask" ]
up42_standard
- dtype
uint8
- format
GTiff
- resolution
40
End User License Agreement
View the End User License Agreement conditions in a new tab.
Sample image 92b575cb Sample image 0df67bed Sample image 176e3e84