Abstract
Reducing methane emissions is essential to tackle climate change. Here, we address the problem of detecting automatically point source methane leaks using high resolution hyperspectral images from the PRISMA satellite. We test the Generalized Likelihood Ratio Test (GLRT) for plume detection and compare it to the Matched Filter (MF). We then propose an improvement of the GLRT by using an adjustment coefficient. We introduce this new method under the name: Model Adjusted GLRT (MA-GLRT). We show that the MA-GLRT method reduces the fraction of false detections compared to the MF and the standard GLRT without preventing the detection of plumes. To validate the method, we use a dataset of manually annotated plumes on PRISMA images. We then show that our method outperforms the matched filter and the GLRT in terms of F1 score.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 13th Workshop on Hyperspectral Imaging and Signal Processing: Evolution in Remote Sensing, WHISPERS 2023 |
| Publisher | IEEE |
| ISBN (Electronic) | 9798350395570 |
| ISBN (Print) | 9798350395587 |
| DOIs | |
| Publication status | Published - 2023 |
| Externally published | Yes |
Publication series
| Name | Workshop on Hyperspectral Image and Signal Processing, Evolution in Remote Sensing |
|---|---|
| ISSN (Print) | 2158-6276 |
Bibliographical note
Publisher Copyright:© 2023 IEEE.
Funding
Work partly financed by Office of Naval research grant N00014-20- S-B001, MENRT, and a PhD scholarship financed by MESRI (Minist`ere de l Enseignement Sup erieur, de la Recherche et de l Innovation). Centre Borelli is also a member of Universit e Paris Cit e, SSA and INSERM.
Keywords
- Anomaly detection
- Hyperspectral images
- Manalahobis distance
- Methane
- Prisma