Abstract
This article addresses the problem of elevation map extraction from high resolution SAR interferograms. Thanks to the improvement of SAR image resolution, it is now possible to study urban areas with such data. As we want to evaluate how precise a DSM (Digital Surface Model) computed from a unique interferometric SAR pair can be, no external data (such as multi incidence images, multi track data or optical image) are added. Much information can be retrieved from the amplitude image, the interferogram and the coherence image: for instance, road map, building map, and shadow map... We propose different detectors in order to get as many pieces of information as possible to describe the scene. The superimposition of all the detectors defines a region graph processed in a Markovian algorithm. Indeed an optimization is made jointly on the heights and the classes of the region graph. The complete process has been run on real data. Critical comments of the results help to analyze the inner limits of interferograms and of the algorithm.
| Translated title of the contribution | A first step toward the extraction of urban MNS in high resolution RSO interferometry by merger of the detectors |
|---|---|
| Original language | French |
| Pages (from-to) | 3-13 |
| Number of pages | 11 |
| Journal | Revue Francaise de Photogrammetrie et de Teledetection |
| Issue number | 176 |
| Publication status | Published - 1 Dec 2004 |
| Externally published | Yes |