Seminar by Pascal Sirguey (University of Otago, New Zealand):
Pushing the boundaries of 3D-Change Detection with Pléiades Neo to monitor landscape change in New Zealand’s Southern Alps
Abstract: The Matariki project transforms environmental monitoring by quantifying environmental resources with high-resolution, automated, satellite photogrammetric mapping (SPM) of landscape change. We have combined traditional photogrammetry with modern computer vision techniques to automate stereo processing and construct repeatable, sub-metre accuracy DSMs. This enables the mapping and detection of changes in surface elevation associated with numerous natural and anthropogenic phenomena (www.otago.ac.nz/surveying/potree/matariki).
As part of the Matariki project and Pléiades Neo Challenge, we compare the performance of SPM with Pléiades PHR and the latest generation Pléiade Neo (PNEO). Our innovative approach to solve the spatial coherence required to detect surface elevation change permitted to demonstrate, characterize, and help fix geometric issues of PNEO imagery that impaired photogrammetric restitution. Our results provide numerous new insights about landscape change affecting the highly dynamic West Coast glacier country of Aotearoa New Zealand. In Kawarau/The Remarkables, a steep alpine range in New Zealand’s Southern Alps/Kā Tiritiri o te Moana we demonstrate our ability to map snow depth with sub-meter accuracy and the significant improvement in resolution and performances brought by PNEO.
Link to profile: Pascal Sirguey's profile page at web.
The talk is in Aud 1 in the Geology Building. It is also possible to follow at Zoom.
Video link to the lecture will be sent to the mailing lists alle@geo and geohyd-info@geo. If you want to subscribe to the geohyd-info@geo list send an email to Anita.
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About the seminar
This seminar is offered by the Section for Geography and Hydrology (GeoHyd), Dept. of Geosciences, University of Oslo. The seminars are announced as lunch seminars so bring your lunch if you want to
The seminars are open to everyone interested, and especially students are welcome.
The Lunch Seminar Team
– Yeliz and Thomas