Title :
Model-based approach to accurate and consistent 3-D modeling of drainage and surrounding terrain
Author_Institution :
Comput. Graphics Lab., Ecole Polytech. Federale de Lausanne, Switzerland
Abstract :
We propose an automated approach to modeling drainage channels-and more generally, linear features that lie on the terrain-from multiple images, which results not only in high-resolution accurate and consistent models of the features, but also of the surrounding terrain. In our specific case, we have chosen to exploit the fact that rivers flow downhill and lie at the bottom of local depressions in the terrain, valley floors tend to be “U” shaped, and the drainage pattern appears as a network of linear features that can be visually detected in single gray-level images. Different approaches have explored individual facets of this problem. Ours unifies these elements in a common framework. We accurately model terrain and features as 3-dimensional objects from several information sources that may be in error and inconsistent with one another. This approach allows us to generate models that are faithful to sensor data, internally consistent and consistent with physical constraints
Keywords :
computer vision; geophysical techniques; geophysics computing; pattern recognition; rivers; 3D modeling of drainage; common framework; gray-level images; linear features; model-based approach; physical constraints; surrounding terrain; Artificial intelligence; Computer graphics; Contracts; Data mining; Dynamic programming; Face detection; Information resources; Rivers; Shape; Three dimensional displays;
Conference_Titel :
Computer Vision and Pattern Recognition, 1997. Proceedings., 1997 IEEE Computer Society Conference on
Conference_Location :
San Juan
Print_ISBN :
0-8186-7822-4
DOI :
10.1109/CVPR.1997.609435