TABLE OF CONTENTS Stereoscopy is the most natural way for human beings to perceive reliefs; stereoscopy is the use of distance transformation properties by projections on two sensors placed at different positions, whether these are the eyes of an observer or photographic receptors. On that account, radar imaging will enable stereoscopic reconstruction. However, we will see that stereoscopy, sometimes called radargrammetry, just as stereovision applied to landscape readings is called photogrammetry, is different from the latter in various ways.
Radargrammetry emerges as one technique at our disposal for reconstructing reliefs from radar images [POL 97, TOU 00]. This is one of the simplest methods. However, it requires significant adjustments of the diagram used in optical imaging (see section 10.1.2). These adjustments will be examined in section 10.2.
In the domain of optical wavelengths, remote sensing applications have often used stereovision techniques in order to reconstruct three-dimensional information, either landscapes or human constructions [AYA 89, HOR 93]. [1]
Reconstruction systems (called stereoscopic plotters), analog at first, then hybrid and finally entirely digital, are commonly used by all cartographic agents and make it possible to obtain remarkably accurate and reliable altitude charts.
The principle of these reconstructions always follows the same steps:
first, a viewing system is placed in two different positions and registers two images of the scene to be reconstructed; this viewing system may be a satellite in the course of two passages above an area or an airborne platform during a systematic mission. During...
