Information

Abstract

Polygonal meshes can be created in several different ways. In this paper we focus on the reconstruction of meshes from point clouds, which are sets of points in 3D. Several algorithms that tackle this task already exist, but they have different benefits and drawbacks, which leads to a large number of possible reconstruction results (i.e., meshes). The evaluation of those techniques requires extensive comparisons between different meshes which is up to now done by either placing images of rendered meshes side-by-side, or by encoding differences by heat maps. A major drawback of both approaches is that they do not scale well with the number of meshes. This paper introduces a new comparative visual analysis technique for 3D meshes which enables the simultaneous comparison of several meshes and allows for the interactive exploration of their differences. Our approach gives an overview of the differences of the input meshes in a 2D view. By selecting certain areas of interest, the user can switch to a 3D representation and explore the spatial differences in detail. To inspect local variations, we provide a magic lens tool in 3D. The location and size of the lens provide further information on the variations of the reconstructions in the selected area. With our comparative visualization approach, differences between several mesh reconstruction algorithms can be easily localized and inspected.

Additional Files and Images

Additional images and videos

Additional files

paper: paper (authors personal copy, accepted for publication by IEEE) paper: paper (authors personal copy, accepted for publication by IEEE)
video-demo: demonstration of the application - 4:30 min - 20.2 MB video-demo: demonstration of the application - 4:30 min - 20.2 MB

Weblinks

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BibTeX

@inproceedings{ymca,
  title =      "YMCA - Your Mesh Comparison Application",
  author =     "Johanna Schmidt and Reinhold Preiner and Thomas Auzinger and
               Michael Wimmer and Meister Eduard Gr{"o}ller and Stefan
               Bruckner",
  year =       "2014",
  abstract =   "Polygonal meshes can be created in several different ways.
               In this paper we focus on the reconstruction of meshes from
               point clouds, which are sets of points in 3D. Several
               algorithms that tackle this task already exist, but they
               have different benefits and drawbacks, which leads to a
               large number of possible reconstruction results (i.e.,
               meshes). The evaluation of those techniques requires
               extensive comparisons between different meshes which is up
               to now done by either placing images of rendered meshes
               side-by-side, or by encoding differences by heat maps. A
               major drawback of both approaches is that they do not scale
               well with the number of meshes. This paper introduces a new
               comparative visual analysis technique for 3D meshes which
               enables the simultaneous comparison of several meshes and
               allows for the interactive exploration of their differences.
               Our approach gives an overview of the differences of the
               input meshes in a 2D view. By selecting certain areas of
               interest, the user can switch to a 3D representation and
               explore the spatial differences in detail. To inspect local
               variations, we provide a magic lens tool in 3D. The location
               and size of the lens provide further information on the
               variations of the reconstructions in the selected area. With
               our comparative visualization approach, differences between
               several mesh reconstruction algorithms can be easily
               localized and inspected.",
  month =      nov,
  booktitle =  "IEEE Visual Analytics Science and Technology",
  location =   "Paris, France",
  note =       "http://dx.doi.org/10.1109/VAST.2014.7042491",
  publisher =  "IEEE Computer Society",
  series =     "VAST ",
  keywords =   "mesh comparison, 3D data exploration, focus+context,
               comparative visualization, Visual analysis",
  URL =        "https://www.cg.tuwien.ac.at/research/publications/2014/ymca/",
}