What question did this study set out to answer?

The aim is to generate accurate digital elevation models (DEMs) from ASTER stereo data in complex topographies.

Three-dimensional topographic mapping with ASTER stereo data in rugged topography

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Randomized trial assesses topographic mapping accuracy in rugged terrain, suggesting improved models for mountainous regions.

The aim is to generate accurate digital elevation models (DEMs) from ASTER stereo data in complex topographies.
Generated DEMs from ASTER stereo pairs with 27.7-degree intersection angles.
Improved accuracy through charge-coupled device calibration and postprocessing techniques.
Evaluated DEM accuracy against ground control points and various environmental conditions.
Final accuracy achieved with LE68 and LE90 of 28 m and 51 m, respectively.
10% improvement in DEM accuracy after CCD calibration.
Postprocessing with 3D tools enhanced accuracy by an additional 10%.

Thierry Toutin (2002) studied this question.

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