Sketch-based Guided Modeling of 3D Buildings from Oriented Photos

Michael Schwärzler, Lisa-Maria Kellner, Stefan Maierhofer, Michael Wimmer
Sketch-based Guided Modeling of 3D Buildings from Oriented Photos
In Proceedings of the 21st ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games, pages 9:1-9:8. February 2017.
[draft]

Information

Abstract

Capturing urban scenes using photogrammetric methods has become an interesting alternative to laser scanning in the past years. For the reconstruction of CAD-ready 3D models, two main types of interactive approaches have become prevalent: One uses the generated 3D point clouds to reconstruct polygonal surfaces, while the other focuses on 2D interaction in the photos to define edges and faces.

We propose a novel interactive system that combines and enhances these approaches in order to optimize current reconstruction and modeling workflows. Our main interaction target are the photos, allowing simple 2D interactions and edge-based snapping. We use the underlying segmented point cloud to define the 3D context in which the sketched polygons are projected whenever possible. An intuitive visual guiding interface gives the user feedback on the accuracy to expect with the current state of modeling to keep the necessary interactions at a minimum level.

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BibTeX

@inproceedings{SCHWAERZLER-2017-SBGM,
  title =      "Sketch-based Guided Modeling of 3D Buildings from Oriented
               Photos",
  author =     "Michael Schw\"{a}rzler and Lisa-Maria Kellner and Stefan
               Maierhofer and Michael Wimmer",
  year =       "2017",
  abstract =   "Capturing urban scenes using photogrammetric methods has
               become an interesting alternative to laser scanning in the
               past years. For the reconstruction of CAD-ready 3D models,
               two main types of interactive approaches have become
               prevalent: One uses the generated 3D point clouds to
               reconstruct polygonal surfaces, while the other focuses on
               2D interaction in the photos to define edges and faces.  We
               propose a novel interactive system that combines and
               enhances these approaches in order to optimize current
               reconstruction and modeling workflows. Our main interaction
               target are the photos, allowing simple 2D interactions and
               edge-based snapping. We use the underlying segmented point
               cloud to define the 3D context in which the sketched
               polygons are projected whenever possible. An intuitive
               visual guiding interface gives the user feedback on the
               accuracy to expect with the current state of modeling to
               keep the necessary interactions at a minimum level.",
  month =      feb,
  booktitle =  "Proceedings of the 21st ACM SIGGRAPH Symposium on
               Interactive 3D Graphics and Games",
  event =      "I3D 2017",
  isbn =       "978-1-4503-4886-7",
  location =   "San Francisco, CA",
  publisher =  "ACM",
  pages =      "9:1--9:8",
  keywords =   "3D modeling, guidance, photogrammetry",
  URL =        "https://www.cg.tuwien.ac.at/research/publications/2017/SCHWAERZLER-2017-SBGM/",
}