Conference paper
Fast Matrix Based Computation of Eigenvalues in PolSAR Data
Abstract
We describe calculation of eigenvalues of 2×2 and 3×3 Hermitian matrices as used in the analysis of multilook polarimetric SAR data. The eigenvalues are calculated as the roots of quadratic or cubic equations. The methods are well suited for fast matrix oriented computer implementation and we obtain speed-ups over calculations based on a built-in eigenproblem solver in for-loops over rows and columns in an image by a factor of 350 (for dual pol) and 175 (for full/quad pol).
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2021 |
| Pages: | 507-510 |
| Proceedings: | 2021 IEEE International Geoscience and Remote Sensing Symposium |
| ISBN: | 1665403683 , 1665403691 , 9781665403689 , 9781665403696 , 1665447621 and 9781665447621 |
| ISSN: | 21537003 and 21536996 |
| Types: | Conference paper |
| DOI: | 10.1109/IGARSS47720.2021.9554658 |
| ORCIDs: | Nielsen, Allan Aasbjerg |
