[GRASS-dev] GSoC 2018 report week 01 - GRASS GIS module for Sentinel-2 cloud and shadow detection
robifagandini at gmail.com
Wed May 23 08:07:04 PDT 2018
I have just added a new version of the grass python script to my GitHub
I tried to clean up the code.
As always, any feedback is welcome!
Thanks in advance!
2018-05-21 15:19 GMT+02:00 Roberta Fagandini <robifagandini at gmail.com>:
> Ciao Stefan!
> 2018-05-20 21:44 GMT+02:00 Stefan Blumentrath <Stefan.Blumentrath at nina.no>
>> Ciao Roberta,
>> Thanks for the comprehensive report!
>> One general hint: Even if the drawback is complex expression(s) I would
>> suggest merging r.mapcalc calls. That can improve performance quite a bit
>> (less data read and written) and reduces the need to manage temporary data.
>> See also: https://grass.osgeo.org/
>> If you don't need the first_... To fifth_... files later, I would even
>> say everything in 3rd_procedure.py until r.to.vect could be solved in a
>> single mapcalc operation...
> Thank you so much for your hints! I'm trying to clean up the code without
> creating a too complex expression..I hope to share the new version by this
> evening or tomorrow at the latest.
>> Kind regards and again thank for your GSoC work,
> Thanks again!!
>> *From:* grass-dev <grass-dev-bounces at lists.osgeo.org> on behalf of
>> Roberta Fagandini <robifagandini at gmail.com>
>> *Sent:* Sunday, May 20, 2018 4:33:57 PM
>> *To:* soc at lists.osgeo.org; GRASS developers list
>> *Subject:* [GRASS-dev] GSoC 2018 report week 01 - 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 first week of coding.
>> Since my progress has been a bit faster than expected I have already
>> discussed with my mentors about further additions to the project. Therefore
>> I have already updated my wiki page  changing the timeline. In this way,
>> I will be able to release a more complete module.
>> *1) What did I complete this week?*
>> - Checked the prototype version of the algorithm for cloud and shadow
>> - Tested it
>> - I better studied the documentation of the GRASS Python Scripting
>> Library and started coding the GRASS python script following the
>> workflow schema prepared during the bonding period 
>> - Coded the 'data preparation' phase
>> - Coded the clouds detection procedure
>> - Added this first part of python script to my GitHub repository 
>> - Discussed with my mentors about further additions
>> - Discussed with the community about testing phase. I received some
>> feedback and some developers stepped forward to help me in testing the
>> - Shared progress with the community
>> Unfortunately, I wasn't able to code on Thursday because of a PhD meeting
>> with my supervisor.
>> *2) What am I going to achieve for next week?*
>> - Finish the translation of the algorithm in a basic python script
>> adding the shadows detection procedure and the steps for checking and
>> cleaning the final outputs (see  for details)
>> - Improve the python script so as to have a "light" working python
>> script (manage temporary file, clean up the code, etc.)
>> - Test it and fix bugs
>> - Start implementing the GUI
>> *3) Is there any blocking issue?*
>> No at the moment.
>> Best wishes,
>>  https://trac.osgeo.org/grass/wiki/GSoC/2018/CloudsAndShadowsDetection
>>  https://drive.google.com/file/d/1KYEKvNBurBFHw1xUTLjM0PW
>>  https://github.com/RobiFag/GRASS_clouds_and_shadows
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the grass-dev