Radiometric calibration with SNAP
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| − | * Download a Sentinel-2 Level 1C tile from ESA's Copernicus [ | + | * Download a Sentinel-2 Level 1C tile from ESA's Copernicus Open Access Hub web service (please see [Downloading Sentinel-2 images]). |
* !Unzip the downloaded compressed product file! | * !Unzip the downloaded compressed product file! | ||
* Start SNAP Desktop. | * Start SNAP Desktop. | ||
Revision as of 10:48, 11 November 2019
- Download a Sentinel-2 Level 1C tile from ESA's Copernicus Open Access Hub web service (please see [Downloading Sentinel-2 images]).
- !Unzip the downloaded compressed product file!
- Start SNAP Desktop.
- File --> Open Product.... Browse to the unzipped product folder and open the metadata file MTD_MSIL1C.xml.
- Optical --> Thematic Land Processing --> Sen2Cor Processor --> Sen2Cor 280
- Specify the Processing Parameters:
A first run will be made with 60m pixel resolution (takes ca. 5-10 minutes).
Topographic normalization is activated with DEM correction: TRUE. For DEM directory specify a folder where dem files are stored.
- Check Display execution execution report on. Run...
- Compare Output Product with Original Product. Mark the Original Product Name in Product Explorer Right Click Open RGB Image Window --> Sentinel-2 MSI Natural Colors. OK. Repeat for the Output Product.
- Window --> Tile horizontally
- Check View --> Sychronize Image Cursors and View --> Sychronize Image Views. Zoom and Pan.
- Activate a map view by clicking into the canvas of the Original Product. Click Mask Manager tab on the right.
- Check the mask layers opaque_clouds and cirrus_clouds in the Mask Manager.
- Click into the map canvas of the Ouput Product. Click Mask Manager tab on the right.
- Check the mask layers scl_cloud_shadow, scl_cloud_medium_proba, scl_cloud_high_proba, scl_thin_cirrus in the Mask Manager.
- For the second run choose in Processing Parameters. Spatial Resolution: 10 (m). Processing takes some time ...
