[GRASS-dev] GSoC 2018 report week 08 - GRASS GIS module for Sentinel-2 cloud and shadow detection

Hi all!
I’m Roberta Fagandini and I’m working on my GSoC project, a GRASS GIS module for Sentinel-2 cloud and shadow detection.
This is my report for the eighth week of coding.

  1. What did I complete this week?
  • Finished writing the routine to read AERONET file and compute the value of Aerosol Optical Thickness at 550 nm (one of the parameters of the i.atcorr control file) [0]
  • Integrated the routine for AOT computation into the GRASS python script to execute i.atcorr for all bands of the input image changing accordingly the requested input parameters and control file [1]
  • Added the automatic and simplified procedure to identify the atmospheric model (one of the parameters of the i.atcorr control file) [1]
  • Managed the use of visibility as input parameter instead of AOT value [1]
  • Finished defining the automatic procedure for retrieving all the last missing parameters for the control file
  • Finished and added to my GitHub repository the complete GRASS python script to execute i.atcorr for all bands [1]
  • Started implementing the GUI [2]
  1. What am I going to achieve for next week?
  • Finish the implementation of the GUI

  • Integrate the download and import of Sentinel 2 images into the new GRASS module (i.sentinel.preproc)

  • Test and fix bugs

  • Make the new module available through my GitHub repository

  1. Is there any blocking issue?
    No at the moment even though I’m a little late on the roadmap because the coding of the routine to compute AOT took slightly more time than expected.

Here the links to my GitHub repository [3] and wiki page [4]

Kind regards,
Roberta

[0] https://github.com/RobiFag/GRASS_clouds_and_shadows/commit/33d0832a0f8dc4aa0c45d37ba6598988579c0d9a
[1] https://github.com/RobiFag/GRASS_clouds_and_shadows/commit/1617184154ead85f83ce7f1a8750f00f100dc2cb

[2] https://github.com/RobiFag/GRASS_clouds_and_shadows/commit/35175c68a35e01941faead903ec8f0380b317aa6

[3] https://github.com/RobiFag/GRASS_clouds_and_shadows
[4] https://trac.osgeo.org/grass/wiki/GSoC/2018/CloudsAndShadowsDetection