Home > Custom Script Contest

Custom Script Contest

Take part in the Sentinel Hub Custom Script Contest!

Remote sensing is making its way into more and more applications and fields. Tools like the Sentinel Hub EO Browser with its custom scripting allow all people to browse, analyse and visualise satellite data in almost real-time.

We at Sentinel Hub, together with our data partners, the Copernicus EU Earth Observation programme and the European Space Agency, are looking for new and innovative ideas and scripts. Therefore, we have organized the first Sentinel Hub Custom Script Contest in Spring 2019. Its success motivated us to repeat it this Autumn. You can hand in custom scripts either as a single author or as a representative of a group. We strongly encourage the participation of students, be it a university or high school. The Contest could be an interesting project for high school science classes.

See the results of the first Custom Script Contest here.

Starting on October 15th 2019 until January 31st 2020 you can hand in up to three different scripts for the Sentinel Hub EO Browser. All the entries will be judged by a jury of experts on functionality and usefulness, as well as possible commercial potential. The authors of the best three scripts will win attractive prizes, as well as the author(s) of the best script by a high schooler or high school team!

The Deep Moist Convection script - the best overall script in the first Contest - applied to the Sentinel-2 image over the North Greece on April 14th 2019. View it in EO Browser.


We want the Contest to be completely open. So, unlike in the first round, this time all the submitted scripts will compete under one common category no matter which data source (Sentinels, Landsat, etc.) the scripts were used for.

Many scripts could run in different categories anyway, so it is just fair to compare them to all scripts handed in.

How to create a script?

If you need some help and instructions on how to get started with custom scripting for the EO Browser we suggest you read:

If you are new to the custom scripting, we would suggest that you check out our friendly Custom Script Tutorial, which will guide you through the first steps and help you create simple custom scripts.

The Forest Cut Temporal Detection script - the second runner in the first Contest under the Agriculture and Forestry category - applided to the Sentinel-2 image of Madagascar forest from 2018 and compared with a raw image from 2017. Visualization in Sentinel Playground Temporal.

Attractive Prizes

We will award the best three custom scripts as follows:

  • First prize: 1,000 EUR and 1-year Enterprise Sentinel Hub account (worth 5,000 EUR)
  • Second prize: 300 EUR and 1-year Individual Commercial Sentinel Hub account (worth 1,000 EUR)
  • Third prize: 1-year Individual Commercial Sentinel Hub account (worth 1,000 EUR)

Additionally, we will award the best custom script submitted by a high-schooler or a high-school team with a special prize:

  • 300 EUR + a box of goodies large enough for all team members

All winners will also get an opportunity to highlight their winning scripts in the Sentinel Hub blog.

Better snow visualisation using NDSI. View script in EO Browser.

How to participate?

  1. All scripts must run within the Sentinel Hub EO Browser or with multi-temporal instance of Sentinel Playground.
  2. All scripts have to be handed in as text files until January 31st 2020 (23:59 CET).
  3. Together with the script, you have to hand in a proper description on what your script can be used for and explain how it is achieving that.
  4. By handing in a script you confirm to be the sole author(s) of the script and to have the necessary rights to do so.
  5. Every single participant or group can hand in up to three scripts.
  6. All entries must be licensed under the Creative Commons BY license, so they can be added to the custom scripts repository and be used freely by all.
The Forest Hurricane script - the third best SAR script in the first Contest - applided to the Sentinel-1 image of Chojnice, Poland in August 2017, showing the area before and after the hurricane. Visualization in EO Browser.

Aditional Requirements

Beside the general description of the script the following information is required:

  • Scripts applicability
  • False detection problems (if any)
  • Detailed description of how the script works
  • Representative cases / images with details
  • Visualization in EO Browser or with multi-temporal instance of Sentinel Playground (a link to a working script)
  • References
  • Credits - In case your script is based on other people's work make sure to include the necessary citations and links to relevant papers.

Submit Your Script

By participating in the Contest, you confirm that you have read and you agree with the Terms and Conditions of the Sentinel Hub Custom Script Contest as well as with the Sentinel Hub's Terms of Service.

Infrared view of wildfires in California in 2017. Hot spots highlighted to show possible active fires. View script in EO Browser.

Our Jury

Simon Gascoin

Research scientist at the Centre national de la recherche scientifique and the Centre d'Etudes Spatiales de la BIOsphère in France, he is interested in improving our knowledge of water resources availability using satellite remote sensing, field instrumentation and numerical modeling. He mainly focuses on the study of the seasonal snow in mountainous regions.

Annamaria Luongo

Remote sensing consultant. Her main interests are Earth surface deformation caused by volcanoes and earthquakes, deforestation and natural hazards. She also has a keen interest in climate change and pollution.

Harel Dan

GIS and remote sensing at HaMaarag, Israel's National Nature Assessment Program. His special interests are wildfire damages, long-term vegetation trends, landcover and landcover change mapping, and the encroaching of buildings and infrastructure on open landscapes.

Hayley Evers-King

Hayley Evers-King is a marine EO scientist with a focus on Sentinel-3 and ocean colour. Hayley has worked on a wide variety of topics including water quality, ocean heat flux, and carbon pools. She is passionate about growing the use of EO data and currently supports EUMETSAT on user support and training activities for their Copernicus missions. She believes science communication is part of every scientists job and has been involved in many activities promoting EO science, from the creation of ocean MOOCs, youtube videos, and open source python tutorials, to music compositions, poetry evenings, and cooking demonstrations.

Mark Parrington

Mark Parrington is a senior scientist at ECMWF where he works with the Copernicus Atmosphere Monitoring Service development team. His scientific interests are in using observations from satellites and aircraft to understand wildfires and how their emissions impact global atmospheric composition and air quality.

Miha Kadunc

Chief Technology Officer and Co-founder of Sinergise

Stef Lhermitte

Remote sensing scientist with specific interest in the use of multi-source remote sensing and land surface modelling to assess the cryosphere, atmosphere and ecosystem dynamics. Since 2016 he is assistant professor of Geoscience & Remote Sensing at the TUDelft in the Netherlands.

Evaluation Criteria

  • Originality
  • Scientific relevance  
  • Global applicability (scripts, which can run on different parts of the world will rank better)
  • Business/Commercial potential
  • Visual appeal

Burned areas after fires

Burned areas after fires - multi-temporal script showing places, where NBR changed significantly before and after fire. View script in Sentinel Playground.



  • When and how will I be informed about results?
    • We will announce the winners of the contest on this web page latest on March 3rd 2020. However, everyone will also be informed by e-mail within 3 days after the announcement.


  • Can I base the script on a publicly available research paper?
    • Yes, of course. We believe there is a lot of useful research available in the EO domain and it should be used to all extent. You should however appropriately credit the work in the accompanying document. 


  • Do I need to subscribe to Sentinel Hub to participate in the contest?
    • No. EO Browser is a free tool. In case you need some advanced features (e.g. time-lapse, comparison, etc.), you can create a free account. If you would actually require Sentinel Hub web services to fine-tune your script, you can use a 30-days free trial option or simply send us an e-mail and we will ensure you can do your work.



  • My script stops working after it becomes too long.
    • There is indeed a technical limit on number of chars, which can be passed over HTTP. But no worries, there is a simple way to solve it.


  • I am more interested in sharing knowledge than a monetary prize. Should I still participate?
    • Of course, this is the main objective of this contest. In case you do not want to receive the prize, you can name a philanthropy organisation of your choice and we will donate the amount to them.


  • Can I submit scripts, which just look nice?
    • Main goal of this action is to share knowledge. However, art is important as well and we need to be aware of the beauty of our Planet, so go ahead!  


  • If I do not win the prize, will my script still be added to the Custom Script repository?
    • We plan to add all scripts, which seem sound, to the repository. We will also be publishing a stream of short blog posts about all interesting scripts. 


  • I have submitted a script but now I want to correct it. What to do?
    • No problem. Simply submit a new version of the script and state very clearly at the beginning that this submission is replacing a previous one.


  • Where can I get more information?
    • Ask a question on our Forum and we will respond.

See also Terms and Conditions of the Sentinel Hub Custom Script Contest for more details.


Results of the First Custom Script Contest 2019

All the scripts that were submitted to the Contest in Spring 2019 were classified in one of the categories below and added to the GitHub (see results below for direct links). The winners of the contest were announced during the Living Planet Symposium in Milan on May 15th 2019 and informed by e-mail the day after.

The authors of the best scripts won attractive prizes, and the author of the overall best script got an invitation to visit the European Space Research Institute (ESRIN), home of ESA’s centre for Earth Observation, to discuss his script with experts in the relevant fields.

The winning scripts were highligted in our blog post Why join the next Sentinel Hub Custom Script Contest and in two guest blog posts, Mapping deforestation with Sentinel Hub by Nicolas Karasiak, and Sentinel Hub supporting IBISA in the Crop Micro-Insurance Field by Jean-Baptiste Pleynet.

Best overall script

  1. Detecting deep moist convection with Sentinel-2 - Stavros Dafis, Greece

Agriculture and Forestry

  1. Anomaly Detection - Jean-Baptiste Pleynet, Luxemburg
  2. Forest cut temporal detection - Nicolas Karasiak, France
  3. Pseudo Forest Canopy Density (pseudo-FCD) - Antonio Carlón Paredes, Spain

Marine environment

  1. White-water detection - Mohor Gartner, Slovenia
  2. Ocean plastic detector prototype - Bence Mélykúti, DPhil (Oxf), Germany

Snow and Glaciers

  1. Monthly snow report - Nicolas Karasiak, France
  2. Snow Cover Change Detection - Karl Chastko, Canada

Disaster management and prevention

  1. Detecting deep moist convection with Sentinel-2 - Stavros Dafis, Greece
  2. Seldom and regular water surface detection - Mohor Gartner, Slovenia
  3. Fire boundary script - Adzanil Rachmadhi Putra, Fatwa Ramdani, Indonesia

Air quality and Urban planning

  1. Green City - Carlos Bentes, Estonia
  2. City Highlights - Thales Sehn Körting, Brazil
  3. Sentinel-1 Urban Areas - Monja Šebela, Slovenia

Other scripts

  1. Land surface temperature (LST) mapping - Mohor Gartner, Slovenia
  2. Monthly composite - Nicolas Karasiak, France
  3. Barren Soil Script - Monja Šebela, Slovenia

Best SAR script

  1. Seldom and regular water surface detection - Mohor Gartner, Slovenia
  2. Sentinel-1 Urban Areas - Monja Šebela, Slovenia
  3. Forest Hurricane - Kamil Onoszko, Poland