References

Climate change

Detection, classification and analysis of oil slicks observed by the ASAR radar instrument in WSM mode onboard Envisat between 2002 and 2012. Oil slicks are classified according to whether they are of natural origin (oil seepages) or anthropogenic (oil spills from platforms or deballasting of ships).
 

10 years of oil in the Gulf of Guinea

Analysis of the three Copernicus Digital Elevation Models (DEMs) (EEA-10, GLO-30 and GLO-90). Comparison of GLO-30 with the other global DEMs SRTM, ASTER GDEM and ALOS World 3D. Altimeter accuracy computed from LiDAR ICESat-1, ICESat-2 ("Terrain only" and "Terrain with canopy") and GEDI ("Lowest mode" and "Highest return") data. Statistical measure of the influence of land cover.

Estimation of the quality of Copernicus DEMs

Monitoring of land cover changes over the last 20 years (2000, 2005, 2010, 2015 and 2019) using Landsat-7, Landsat-8 and Sentinel-2 data. Detection of illegal mining sites.

Study of deforestation and mining activity in the territory of Bafwasende (DRC)

Presentation of the most important Earth observation images during the "science week". Explanation of acquisition techniques, processing and applications

« Inspector Copernicus: mission to save the planet ! »

Presentation of two tools "Rising Water" and "Climate Analogues" from the "ClimTools" service developed by VisioTerra to raise awareness of climate change issues among primary school pupils and the general public.

« Hotter and hotter... feet in the water »

Automatic fire and burn detection service based on image data from the Proba-V, Sentinel-2 and Sentinel-3 satellites.

Fire Watch

Dynamics of the land use of the protected areas ZC Djona, ZC Mekrou and PN W-Benin and their periphery from satellite data.

Evolution of land use in northern Benin

Production of land use classification maps and statistics for the study of urban growth in the cities of Abidjan and Bouaké in Ivory Coast.

Urban growth in Ivory Coast

Analysis of forest degradation since 2000 in favour of cocoa agroforestry in the forest reserves (excluding admitted farms) of Tano-Ofin, Sui-River and Krokosua using radar and optical images.

Study of deforestation in three Forest Reserves in Ghana

Client-server system allowing to scan free data from the Web, to visualize them in 2D/3D in all browsers, to process them on the fly, to share and to export the selected data.
 

VisioTerra open platform

Production of land use maps of the three protected areas ZC Djona, ZC Mekrou and PN W-Benin and their periphery from satellite data since 1998.

Study of the dynamics of land use in the hunting zones (ZC) and national park (PN) in Benin

Integration of the free SPOT-123/4/5 image catalog in VtWeb. Development of pseudo "natural colors" rendering functions. Production of a gallery of views.

Galerie SPOT World Heritage

Within the framework of the GMES & Africa program, the SEFAC (Suivi et Évaluation des Forêts d’Afrique Centrale) consortium has developed the CAFWS (Central Africa Forest Warning System) platform for monitoring deforestation in sites provided by users. The monitoring is performed in near-real time, as soon as the Sentinel-1 radar satellite observations are made available by the European Space Agency (ESA).

Central Africa Forest Warning System

Supply and processing of images (radar and optical) on the Tindouf Basin (Algeria). Production of geological photo-interpretation maps.

Geological analysis in the Tindouf Basin

Daily edition of ’Stories’ (’Sentinel of the Day’ and ’Event Sheets’) showing the potential of Sentinel-1/2/3/5P images and altimetry data. 

Sentinel Vision

Integrated Strategic Environmental Assessment (ISEA) for the development of the port of San-Pedro (Ivory Coast). Rainfall study, flood simulation, land use spatio-mapping, coastline evolution study, constitution of the dedicated GIS.

ISEA San-Pedro

In the framework of the GMES&Africa programme, VisioTerra supported AfEOS in the development of indicators, dashboards, periodic bulletins and configured a datacenter for the Sahara and Sahel Observatory (OSS).

Platform for agriculture and irrigation

Sentinel-2 data were used to calculate differences in vegetation indices before and after Hurricane Matthew occurred on October 4, 2016.

Assessment of vegetation losses after Hurricane Matthew

Presentation and use of the FLEGT Watch Web application and the FLEGT Watch App smartphone application. Practice of a field mission. Photo-interpretation of Sentinel radar and optical images to detect forest cover changes and deforestation.

Platform for agriculture and irrigation

Automatic oil slick detection service in the maritime zone, along the coast, around platforms, on the edge of reserves... An automatic algorithm distinguishes between natural slicks (oil seepages) and pollution caused by platforms or deballasting (oil spills).

Oil Watch

Investigation of the volume and accessibility of ESA’s major EO archives. Developed a prototype to access and process -DHuS Sentinel-1, -Envisat ASAR/MERIS, -Landsat-5/7 TM/ETM+ collections on the fly.

Study « Live-link to ESA Big Data »

Presentation of the latest developments and applications in Earth Observation to non-academic citizens.

« University at All Ages »

Service for automatic detection of forest cover changes from Sentinel-1 radar data, notification to observers and support to in-situ monitoring.

FLEGT Watch

Field survey and production of a report for the capacity building of the Geomatics Laboratory of the regional school ERAIFT in Kinshasa, DRC.

Capacity Building

Study of the potential of satellite data for environmental monitoring in very cold areas.

Cryosat over the Arctic

Envisat with HEDAVI, Sentinel with VtWeb, Thematic studies, Use of SNAP, Use of Google Earth Engine.

Sentinel data access and processing tools

Client-server system allowing to scan, visualize, share, export and choose the rendering of the altimeter data on board the ESA CryoSat satellite.

CryoSat Data Platform

Development and qualification of methods for recovering the optical signature of hydrocarbons from slicks detected by radar.

Radar / optical coupling

Production of land cover maps of 5 provinces of Mozambique from Landsat scenes and field data. Processing of Radar scenes. Orthorectification of SPOT scenes.

LU/LC from Mozambique

Rwanda Environment Management Authority (REMA) - Supervision of the RBIS project from the tender to the development of the software, the organization of the data and the different trainings.

REMA Biodiversity Information System (RBIS)

Control of knowledge and upgrading in a framework of "open and distance learning" (FOAD project of the AUF).

Remote sensing and image processing

Client-server system allowing to scan, visualize, share, export and choose the data rendering of the Goce satellite gravity measurements and the geomagnetic measurements of the three satellites of the Swarm constellation.

Goce Swarm Exploration Platform

Compilation and accurate geocoding of optical and radar data (satellite and aerial views) acquired over the last 35 years. Photo-interpretation of the coastline and development of tools to quantify erosion/accretion.

Coastal erosion of the Mandji peninsula

Generic description of missions and instruments using SensorML to support the Calibration / Validation activities of the CEOS group.

CAL/VAL Portal

School of Cadastre of the National Institute of Cartography (INC) in Libreville. Reminders of geodesy and space mechanics. Detailed presentation of geocoding and orthorectification algorithms for optical and radar Earth observation images.

Spatial geometry algorithms

Leading of a consortium of research institutes for the "Assessment of Cetacean Populations and Habitats in the Bay of Bengal and Icelandic Continental Shelf Large Marine Ecosystems". Production of a virtual globe for the project.

Portal for the protection of whales

Improvement and correction of the manual by introducing user questions (FAQ), a description of applications and level 3 products.

MERIS Product Manual

This manual accurately describes the shooting geometry, algorithms and programs to orthorectify MERIS Level 1B images from auxiliary elevation data or external DTM(s).

MERIS Geometry Manual

Advanced courses and practical work ArcGIS TNTmips for the implementation of a GIS "Risk Management", the processing of optical and radar images, the use of digital terrain models and the production of thematic maps by the Forestry Department of Myanmar.

Remote sensing and GIS for risk mapping

A stand-alone local disk mining application to recognise, locate and extract metadata from satellite products. The resulting catalogue can be used to manage copies to other media for distribution.

Earth Observation Local Explorer

Image processing: physics, instruments, pseudo colours and colour compositions, statistics, LUT transformation, filtering, merging - "Georeferencing": geodesy, reference frames, global deformations, spatial mechanics, image products, optical and radar orthorectification.

Image Processing" and "Georeferencing" courses

Hosted service for viewing and sharing legacy data (ERS, Envisat satellites) and data from third party missions (Landsat) of the European Space Agency (ESA).

Heritage Data Visualisation

Service for calculating plant growth indicators and automatically detecting growth anomalies and water stress.

Agri Watch

Communication in the universities of Constantine and M’Sila. Processing of Landsat scenes in the region of Constantine.

Geometry of remote sensing images

Geocoding and processing of Landsat, Radar and DTM data for the production of LU/LC maps from field data and by supervised classification.

Production of a land use map of Guinea

Training of Venezuelan oil executives in the acquisition, processing and interpretation of Earth observation data.

Course on Remote Sensing Applied to Petroleum Exploration

Detection of coffee plantations by classification in Mukono district, Uganda using Sentinel 2 multispectral data.

Coffee detection at Mukono

Geocoding and processing of radar segments and scenes to facilitate photo-interpretation of offshore oil slicks.

Mass production of geocoded radar data

In collaboration with the University of Marne-la-Vallée and with the support of the European Space Agency, VisioTerra has designed a GIS of Palestine that has been presented to the universities of Al-Quds, Nablus and Hebron.

Training Remote Sensing and GIS in Palestine

Modelling of water transfers on a basin scale and monitoring of basin recharge/discharge areas.

Water Watch