Terrain Synthesis from Digital Elevation Models
| Autor: | James M. Rehg, Howard Zhou, Jimeng Sun, Greg Turk |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Computer science
Information Storage and Retrieval Terrain Environment Computer graphics Imaging Three-Dimensional Cut Computer graphics (images) Image Interpretation Computer-Assisted Computer Graphics Computer vision Digital elevation model ComputingMethodologies_COMPUTERGRAPHICS business.industry Altitude Terrain rendering Image Enhancement Computer Graphics and Computer-Aided Design Feature (computer vision) Signal Processing Computer Vision and Pattern Recognition Artificial intelligence business Algorithms Software Texture synthesis |
| Zdroj: | IEEE Transactions on Visualization and Computer Graphics. 13:834-848 |
| ISSN: | 1077-2626 |
| DOI: | 10.1109/tvcg.2007.1027 |
| Popis: | In this paper, we present an example-based system for terrain synthesis. In our approach, patches from a sample terrain (represented by a height field) are used to generate a new terrain. The synthesis is guided by a user-sketched feature map that specifies where terrain features occur in the resulting synthetic terrain. Our system emphasizes large-scale curvilinear features (ridges and valleys) because such features are the dominant visual elements in most terrains. Both the example height field and user's sketch map are analyzed using a technique from the field of geomorphology. The system finds patches from the example data that match the features found in the user's sketch. Patches are joined together using graph cuts and Poisson editing. The order in which patches are placed in the synthesized terrain is determined by breadth-first traversal of a feature tree and this generates improved results over standard raster-scan placement orders. Our technique supports user-controlled terrain synthesis in a wide variety of styles, based upon the visual richness of real-world terrain data. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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