Figurit Homepage
IOTA² - land-use map production line for large areas based on time series of Sentinel or Landsat images logo
PROJECT REFERENCE

IOTA² - land-use map production line for large areas based on time series of Sentinel or Landsat images

CNES
Generic


Customer: Centre National d’Etudes Spatiales (CNES)

Programme: Generic

Supply Chain: CNES > CS Group PDA

Context

IOTA² is a land-use map production line for large areas based on time series of Sentinel or Landsat images developped for CNES / CESBIO. In order to facilitate methodological contributions, IOTA² is open-source. As such, the channel makes extensive use of the image processing applications provided by Orfeo ToolBox.

Main Picture

CS Group responsabilities are as follows:

  • Maintenance and evolution of the IOTA² chain in order to meet the needs of land use map production
  • User support.

The features are as follows:

  • Use of sensors of different types (optical/radar) to obtain better quality classifications.
  • Users can provide exogenous data as well as primitive data.
  • Possibility of spatially delineating learning zones.
  • Automatic calculation of primitives allowing the help to determine the label.
  • Merging classifications.
  • Automatic generation of coefficients allowing the evaluation of the quality of the classification.
  • Division into stages of the chain allows it to be launched only on very specific stages.

Project implementation

The project objectives are as follows:

  • Annual production of a national land use map.
  • Testing new algorithms over large areas.

The processes for carrying out the project are:

  • Software V-Model

Technical characteristics

The solution key points are as follows:

  • Automatic installation with its dependencies
  • Combined use of Orfeo ToolBox multi-threading and MPI speeds up calculations.
  • Understanding of different N2A product formats (THEIA + PEPS) to be able to classify as many geographical areas as possible.

The main technologies used in this project are:

Domain Technology(ies)
Operating System(s) Unix, Linux Ubuntu, CentOS
Programming language(s) Python, C++
Production software (IDE, DEVOPS etc.) GCC 4.8
Main COTS library(ies) OTB, GDAL, Qgis