06-26, 09:00–13:00 (Europe/Tirane), UBT C / N111 - Second Floor
This workshop will present a series of 3D open source tools from CNES (French space agency). We will start with two stereo satellite acquisitions and aim to produce a 3D change map. Our study case will be a part of the area affected by the 2020 Alex storm.
In many application fields, more and more scientific and business applications need 3D earth elevation information. Moreover, with the increasing availability of data (especially satellites), 3D change detection between several dates of the same 3D scene becomes possible to answer more application needs.
In the frame of a future dedicated CO3D constellation, CNES (French space agency) has developed open source 3D tools around CARS main pipeline tool. These tools are made available for massive Digital Surface Model production with a robust and performant design, but also for research aims.
During this workshop, you will discover how to:
- generate 3D Digital Surface Models from two sets of stereo satellite images before and after the storm through CARS tool
- extract the Digital Terrain Models from Digital Surface Models with Bulldozer tool
- quantify and localize the 3D change with Demcompare tool
Through this technical use case, the following CNES tools will be described:
- CARS is a tool dedicated to producing massive Digital Surface Models from satellite imaging by photogrammetry : https://github.com/cnes/cars using the stereo matching tool PANDORA https://github.com/cnes/pandora
- Bulldozer is a tool designed as a pipeline of standalone functions that allows you to extract the Digital Terrain Model (DTM) using only a Digital Surface Model (DSM) : https://github.com/cnes/bulldozer
- DemCompare is a software that compares two Digital Elevation Models through coregistration process and standard statistics computation : https://github.com/cnes/demcompare
Emmanuel Dubois is an image processing engineer in CNES, the French Space Agency. After ten years on satellite telecommunications, he works now on 3D restitution thematic, mainly on CNES tools such as CARS, pandora, demcompare.
David Youssefi received the Electrical Engineering degree from the École Nationale Supérieure d’Electronique, Informatique, Télécommunications, Mathématique et Mécanique, Bordeaux, France. From 2013 to 2018, he was a Study Engineer at Communications et Systèmes, Toulouse, where he worked on remote sensing image processing especially in 3D processing. He is currently with the Centre National d’Etudes Spatiales (French Space Agency), Toulouse, as a Ground Segment Software Development Engineer, where he is responsible for software development for Pleiades and design for the future Earth Observation mission CO3D from CNES.
