Change detection in polarimetric synthetic aperture radar data | Allan Aasbjerg Nielsen, Henning Skriver, Knut Conradsen, Morton John Canty
| | Abstract | Based on an omnibus likelihood ratio test statistic for the equality of several variance-covariance matrices following the complex Wishart distribution and a factorization of this test statistic with associated p-values, change analysis in a time sequence of multilook polarimetric SAR data in the covariance matrix representation is carried out. The omnibus test statistic and its factorization detect if and when change occurs. Also, a measure of change direction is calculated. Using spaceborne dual polarization Sentinel-1 and full polarization Radarsat-2 data this contribution focuses on change detection based on the p-values, on visualization of change at pixel as well as segment level, and on computer software for local as well as cloud processing. | | Type | Conference paper [Abstract] | | Conference | Nordic Remote Sensing Conference (NoRSC) | | Year | 2019 Month September | | Address | AIAS, Aarhus, Denmark | | Electronic version(s) | [pdf] | | Publication link | http://imm.dtu.dk/pubdb/p.php?7141 | | BibTeX data | [bibtex] | | IMM Group(s) | Image Analysis & Computer Graphics |
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