Abstract
This paper proposes a method that can reproduce a 3D landscape with altitude by combining 2D map data with Laser Scanner (LS) data. LS data has altitude data, which are measured by a laser irradiation device equipped with an airplane. However, in the region where woods or rivers are located, LS data can't measure the accurate altitude. Then, the exact altitude data around the river should be extracted by removing the altitude data of buildings or woods from the LS data. Next, the LS data which reach the riverbed should be distinguished to estimate the elevation of the riverbed. On the other hand, the river area can be extracted from 2D map. And, the river contours are represented by curved lines. With these results, 3D scene of the river and its surrounding area can be represented with exact altitude by combining the altitude data of the ground surface and the riverbed.
