| Title | ASTER DEMs for geomatic and geoscientific applications: A review |
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| Author | Toutin, T |
| Source | International Journal of Remote Sensing vol. 29, no. 7, 2008 p. 1855-1875, https://doi.org/10.1080/01431160701408477  Open Access |
| Year | 2008 |
| Alt Series | Natural Resources Canada, Contribution Series 20181308 |
| Publisher | Informa UK Limited |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf |
| Subjects | geophysics; remote sensing |
| Program | Canada Centre for Remote Sensing Divsion |
| Released | 2008 04 03 |
| Abstract | Most geoscientific applications using georeferenced cartographic/ geospatial data require good knowledge and visualization of the topography of the Earth's surface. For example, mapping of
geomorphological features is hardly feasible from a single image; three-dimensional (3D) information has to be generated or added for a better interpretation of the two-dimensional data. Since the early emergence of earth observation satellites,
researchers have investigated different methods of extracting 3D information using satellite data. Since the early experiments with the Earth Terrain Camera flown onboard SkyLab in 1973 to 1974, various analogue or digital sensors in the visible or
microwave spectrum have been flown to provide researchers and geoscientists with spatial data for extracting and interpreting 3D information of the Earth's surface. Stereo viewing using digital scanner images, such as with the Advanced Spaceborne
Thermal Emission and Reflection Radiometer (ASTER) along-track sensors, was, and still is, the most common method used by the mapping, geomatic, and geoscientific communities for generating digital elevation models (DEMs). This paper will review the
basic characteristics of stereoscopy and its application to the ASTER system for DEM generation. It will thus address the methods, algorithms and commercial software to extract absolute or relative elevation and assess their performance using the
results from various research and commercial organizations. It will finally discuss the use of stereo ASTER DEMs for different geomatic and geoscientific applications. |
| GEOSCAN ID | 311662 |
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