[gdal-dev] Multiple processing options related to Cloud Masking in one VRT

[Marcin Niemyjski]

Hello,

What I am trying to do is to generate a VRT file suitable for composing an RGB satellite image along with a cloud mask for that composition.

I would like to include the following information in one VRT file
:

  1.  Information about the path to the RGB image file
  2.  Information about the path to the cloud mask file
  3.  Marking/reclassifying pixels with a specified cloud value as "no data" (for the mask file, so that GDAL can properly mask them in the RGB composition)
  4.  Indicating the cloud mask file as the alpha channel.

Is this possible? Currently, I'm attempting the following:

(python3.10) ubuntu at janek-test:~$ gdalbuildvrt /home/ubuntu/Desktop/alpha.vrt /eodata/Sentinel-2/MSI/L2A/2022/06/05/S2B_MSIL2A_20220605T083559_N0400_R064_T37TCN_20220605T103839.SAFE/GRANULE/L2A_T37TCN_A027403_20220605T083716/IMG_DATA/R60m/T37TCN_20220605T083559_TCI_60m.jp2 -addalpha /eodata/Sentinel-2/MSI/L2A/2022/06/05/S2B_MSIL2A_20220605T083559_N0400_R064_T37TCN_20220605T103839.SAFE/GRANULE/L2A_T37TCN_A027403_20220605T083716/IMG_DATA/R60m/T37TCN_20220605T083559_SCL_60m.jp2 0...10...20...30...40...50...60...70...80...90...100 - done. Warning 1: gdalbuildvrt does not support heterogeneous band numbers: expected 3, got 1. Skipping /eodata/Sentinel-2/MSI/L2A/2022/06/05/S2B_MSIL2A_20220605T083559_N0400_R064_T37TCN_20220605T103839.SAFE/GRANULE/L2A_T37TCN_A027403_20220605T083716/IMG_DATA/R60m/T37TCN_20220605T083559_SCL_60m.jp2

with visible poor results :(

I would be very grateful for any advice or recommendation.
Best,

Marcin



Marcin Niemyjski
Junior Data Scientist
CloudFerro sp z o.o.
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00-446 Warszawa, Poland    e: mniemyjski at cloudferro.com
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