Out-of-Core Terrain Rendering with Reparameterized Textures

Joachim Harabasz
In proceedings of The 8th Central European Seminar on Computer Graphics, pages 191-199, Apr. 2004
Präsentiert: The 8th Centrel European Seminar on Computer Graphics
 

Abstract

Visualisation of terrain data has been an active area of research for more than an decade already and astonishing results have been achieved already. But there are still some issues to resolve, e.g. the texturing of current terrain rendering engines is based on orthographic projection, which leads to artifacts in very steep places like walls or cliffs, where small pieces of the texture is applied to large parts of the terrain model. To increase the texture information in these steep places it is necessary to increase the size of the texture area that is applied to these pieces of the terrain model. To solve the problem a new parameterization for the terrain model is computed and the texture is enhanced by additional information. Due to the new parameterization the orthographic texture has to be resampled to fit the new parameterization or in other words, the texture has to be "reparameterized". Ground-images are merged into the reparameterized texture to increase the texture details in steep places.

Stichwörter: image projection, reparameterized textures, terrain rendering

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Bibtex

@INPROCEEDINGS{harabasz-2004-out-of-core,
      author = {Harabasz, Joachim},
       pages = {191--199},
       title = {Out-of-Core Terrain Rendering with Reparameterized Textures},
   booktitle = {The 8th Central European Seminar on Computer Graphics},
        year = {2004},
       month = apr,
    keywords = {image projection, reparameterized textures, terrain rendering},
    abstract = {Visualisation of terrain data has been an active area of research for more than an decade already
                and astonishing results have been achieved already. But there are still some issues to resolve, e.g.
                the texturing of current terrain rendering engines is based on orthographic projection, which leads
                to artifacts in very steep places like walls or cliffs, where small pieces of the texture is applied
                to large parts of the terrain model. To increase the texture information in these steep places it is
                necessary to increase the size of the texture area that is applied to these pieces of the terrain
                model. To solve the problem a new parameterization for the terrain model is computed and the texture
                is enhanced by additional information. Due to the new parameterization the orthographic texture has
                to be resampled to fit the new parameterization or in other words, the texture has to be
                "reparameterized". Ground-images are merged into the reparameterized texture to increase the texture
                details in steep places.},
  conference = {The 8th Centrel European Seminar on Computer Graphics}
}