Grenoble, 2008/09/08

VHR Systems Missions Challenges

New processing approaches

I Good old time of complete manual photo-interpretation isover

I The same stands for naive hopes of fully automaticinformation extraction

I semi-supervised approaches are needed, but not only forclassification

I registration, change detection, object recognition, etc.I SSA can be build upon active learning and content-based

indexing, for instanceI About content-based indexing

I it needs to be specific to the application domainI to be designed in close collaboration with users

I Web-aware approaches compatible with open standardsmay be very useful

Grenoble, 2008/09/08

VHR Systems Missions Challenges

Supervised object segmentation

Grenoble, 2008/09/08

VHR Systems Missions Challenges

Supervised object segmentation

Grenoble, 2008/09/08

VHR Systems Missions Challenges

Supervised change detection

Grenoble, 2008/09/08

VHR Systems Missions Challenges

Hot topicsExamples of users’s needs

I Extracting shallow water bathymetry from Pleiades imagesI Monitoring harbor developmentI Anchorage zonesI Mobil-home, caravaning monitoringI Damage management after fires or explosions in urban

areasI Duration of immersion during a floodI Scale adapting space mapI Locating underground water in arid zonesI Trees alignments outside forestsI Farming practices monitoringI Organization of the plants inside the parcelsI ...

Grenoble, 2008/09/08

VHR Systems Missions Challenges

Hot topics -2-Examples of objects of interest

I Hospitals, schools, commercial areas, ...I Ship tracking, people gatherings, ...I Car parks, hydro networks, bridges, dykes, ...I ...

Grenoble, 2008/09/08

VHR Systems Missions Challenges

Viewing angleFront

Grenoble, 2008/09/08

VHR Systems Missions Challenges

Viewing angleRear

Grenoble, 2008/09/08

VHR Systems Missions Challenges

Geometry issues

I How to precisely register the imagesI ... without knowing the DEM!

I Hidden faces ...I Localization error depends on the DEM quality and

therefore independent of the resolution ...I ... it is therefore – in pixels – proportional to resolution!

Grenoble, 2008/09/08

VHR Systems Missions Challenges

RadiometryShadows

2 images acquired with several minutes of delay

Winter/Summer illumination