BlueBRIDGE workshop: "Supporting Blue Growth with innovative applications based on EU e-infrastructures" - Brussels February 2018

1. BlueBRIDGE receives funding from the European Union’s Horizon 2020
research and innovation programme under grant agreement No. 675680 www.bluebridge-vres.eu
Environmental Observation (EO) data to
detect aquaculture structures: merging
Copernicus and other mission’s data
Nicolas Longépé & Jean Yves Lebras, CLS;
Taruna Mulia, BBPBAP Maros
jlebras@cls.fr Supporting Blue Growth with
innovative applications based on
EU e-infrastructures
14-15 February 2018, Brussels

2. "Supporting Blue Growth with innovative applications based
on EU e-infrastructures”, 14-15 February 2018, Brussels
What is Copernicus ?
European response to global needs
• To manage the environment,
• To mitigate the effects of climate
change and
• To ensure civil security
A huge volume of data
Level 0 and 1 data production :
13TBytes/day
5PBytes/year
+
Copernicus Core services
approx.
10PBytes/year
Sentinel 1 , 2, 3
15/02/2018 2

3. "Supporting Blue Growth with innovative applications based
on EU e-infrastructures”, 14-15 February 2018, Brussels
Sentinel for aquaculture
• Sentinel-1 ESA / EC mission (radar) – 2 satellites launched in 2014 and 2016
C-Band Synthetic Aperture Radar (SAR) data - Independant on light condition and
clouds
• Preliminary detection of fish cages (Best resolution 10 m)
• Sentinel- 2 ESA / EC mission (optical) - 2 satellites launched in 2015 and end 2017
Prime objectives : Land monitoring and coastal zones (25 km off the shore)
• Preliminary detection of fish cages, shrimp farms or seaweed parcel (Best spatial
resolution 10 m)
• Adequate for High Resolution inland and coastal water quality index (Sediment,
Chlorophyll…)
• Sentinel – 3 ESA / EC mission (not demonstrated in BlueBridge) - S3A launched in
2016
• Prime objective of ocean monitoring, several sensors and applications: oceanography,
water quality and SST
• Real Time monitoring of oceanographic conditions and water quality close to
aquaculture farms, help aquaculture site selection
15/02/2018 3

4. "Supporting Blue Growth with innovative applications based
on EU e-infrastructures”, 14-15 February 2018, Brussels
The “Aquaculture Atlas Production System”
(AAPS) VRE:
A Copernicus downstream service
• How it works?:
• Process Earth Observation/ Copernicus products as input
• Explore automatic methods for detection of aquaculture features
• Store derived products in the BlueBridge infrastructure for collaborative exploitation
• Display and update online via a web-app hosted in the VRE
• Support demonstrations on selected areas
• Fish cage detection and characterization in Greece and Malta, based mostly on VHR optical
images (*)
• Coastal Ponds detection and characterization in Sulawesi (Indonesia), based on S-1, S-2
(*) In BlueBridge R&D context : High resolution basemap image from MICROSOFT Bing, Google Earth or
Here WeGo (ex Nokia). Bing derived products shall be disseminated under Open Database License
15/02/2018 4

5. "Supporting Blue Growth with innovative applications based
on EU e-infrastructures”, 14-15 February 2018, Brussels
Implementation
15/02/2018 5

6. "Supporting Blue Growth with innovative applications based
on EU e-infrastructures”, 14-15 February 2018, Brussels
Indonesian study case
• Challenge: Detection of aquaculture coastal ponds in Sulawesi
• How?
• Detection of permanent water bodies using multispectral
optical satellite
• Problem of revisit due to cloud cover, time series may not be able to
discriminate permanent/seasonal/temporal water bodies
• Ambiguities due to flooded rice paddy field solved by radar
imagery
• SAR insensitive to cloud/night condition, no problem of revisit
• SAR signal sensitive to rice growth
• 64 Sentinel-1 images available from 12/2014 to 01/2017
15/02/2018 6

7. "Supporting Blue Growth with innovative applications based
on EU e-infrastructures”, 14-15 February 2018, Brussels
S2-based NDWI over coastal brackish
ponds
15/02/2018 7

8. "Supporting Blue Growth with innovative applications based
on EU e-infrastructures”, 14-15 February 2018, Brussels
Rice paddy vs. Coastal pond:
Copernicus S-1 solution
• Collect in situ information (via Google)
• Look at temporal variations of the radar backscattering
over these selected locations
• Use these variations as input of a
dedicated classifier
Series of S-1 images
15/02/2018 8

9. "Supporting Blue Growth with innovative applications based
on EU e-infrastructures”, 14-15 February 2018, Brussels
Greece/Malta study case
• Challenge: Detection of aquaculture fish farms in Greece
and Malta
• How:
• Detection feasible in certain cases with Copernicus imagery, but no
characterization feasible (limitation due to medium resolution)
• With high resolution optical images
• Need software and dedicated algorithm to perform such task -> ACUITY
Image from Microsoft Bing Aerial – Derived products will be available under the Open Database Licence © Open Street Map
15/02/2018 9

10. "Supporting Blue Growth with innovative applications based
on EU e-infrastructures”, 14-15 February 2018, Brussels
Solution for Greece/Malta use case study:
semi-supervised algorithm
• Acuity:
• A GIS plateform developed by CLS with capacity for EO ingestion, ancillary data
integration, simplified and intuitive tools for annotation of features
• A new version available dedicatedly tuned for the aquaculture sector
• Simple to use, efficient and adapted to the sector needs.
• How it works
• Step 1: Region of Interest selection
• Step 2: Automatic fish cage detection
• Dedicated algorithms implemented to detect circular (flexible) and square (rigid) floating fish cages
• Step 3: eventually manual editing
• Dedicated tools implemented to handle geospatial vectorial information – simple to use
(compared to GIS software), dedicated to aquaculture features
• Step 4: ontology description
• An ontology can be proposed depending on context, aquaculture features, input EO images
1015/02/2018

11. "Supporting Blue Growth with innovative applications based
on EU e-infrastructures”, 14-15 February 2018, Brussels
Web app example in Greece
Image from Microsoft Bing Aerial – Derived products will be available under the Open Database Licence © Open Street Map
15/02/2018 11

12. "Supporting Blue Growth with innovative applications based
on EU e-infrastructures”, 14-15 February 2018, Brussels
Benefits
• Storage of Earth Observation derived products
for aquaculture management
• Standardised attributes (metadata) according
to FAO specification
• Showcase and display of relevant input
Copernicus imagery
• Access to metadata for integrated coastal
management purpose (e.g. maritime spatial
planning)
15/02/2018 12

13. "Supporting Blue Growth with innovative applications based
on EU e-infrastructures”, 14-15 February 2018, Brussels
Impact
• List and follow
evolution of marine
aquaculture
features
• Obtain a
preliminary regional
assessment of
coastal wetland use
National and international organizations can
1315/02/2018

14. "Supporting Blue Growth with innovative applications based
on EU e-infrastructures”, 14-15 February 2018, Brussels
Towards sustainability
• Access conditions to Very High Resolution imagery
• Mechanism to handle inventory requests and
updates
• Implementation of open and free (e.g. Copernicus)
imagery analytics
• Set-up of partnership for VHR imagery processing
(need for scientific and local expertise)
15/02/2018 14

15. "Supporting Blue Growth with innovative applications based
on EU e-infrastructures”, 14-15 February 2018, Brussels
Perspectives
• Extension to inland aquaculture
• Unsupervised screening of
coastlines for fish farms
• Assess EO benefits for
mangrove mapping
• Real time monitoring
applications
• Pollution detection using
Sentinel 1 and 2
• Support to aquaculture industry:
water quality monitoring with
Sentinel 2 and Sentinel 3
15/02/2018 15

16. THANK YOU FOR YOR ATTENTION
15/02/2018 16