Cut and Paint: Occlusion-Aware Subset Selection for Surface Processing

Information

• Publication Type: Conference Paper
• Workgroup(s)/Project(s):
  • Real-Time Shape Acquisition with Sensor-Specific Precision
• Date: May 2017
• Publisher: Canadian Human-Computer Communications Society / Soci{\'e}t{\'e} canadienne du dialogue humain-machine
• Location: Edmonton, Alberta, CA
• Lecturer: Mohamed Radwan
• Event: Graphics Interface 2017
• DOI: 10.20380/GI2017.11
• Booktitle: Proceedings of Graphics Interface 2017
• Conference date: 17. May 2017 – 19. May 2017
• Pages: 82 – 89

Abstract

User-guided surface selection operations are straightforward for visible regions on a convex model. However, concave surfaces present a challenge because self-occlusions require multiple camera positions to get unobstructed views. Therefore, users often have to locate and switch to new unobstructed views in order to continue the operation. Our novel approach enables operations like painting or cutting in a single view, even on the backside of objects and for arbitrary depth complexity, with interactive performance. Continuous projection of a curve drawn in screen space onto the mesh guarantees seamless brush strokes or manifold cuts, unaffected by any occlusions.

Our occlusion-aware surface-processing method enables a number of applications in an easy way. As examples, we show continuous painting on the surface, selecting regions for texturing, creating illustrative cutaways from nested models and animation of cutaways.

Additional Files and Images

Weblinks

• DOI: 10.20380/GI2017.11

BibTeX

@inproceedings{Radwan-2017-Occ,
  title =      "Cut and Paint: Occlusion-Aware Subset Selection for Surface
               Processing",
  author =     "Mohamed Radwan and Stefan Ohrhallinger and Elmar Eisemann
               and Michael Wimmer",
  year =       "2017",
  abstract =   "User-guided surface selection operations are straightforward
               for visible regions on a convex model. However, concave
               surfaces present a challenge because self-occlusions require
               multiple camera positions to get unobstructed views.
               Therefore, users often have to locate and switch to new
               unobstructed views in order to continue the operation. Our
               novel approach enables operations like painting or cutting
               in a single view, even on the backside of objects and for
               arbitrary depth complexity, with interactive performance.
               Continuous projection of a curve drawn in screen space onto
               the mesh guarantees seamless brush strokes or manifold cuts,
               unaffected by any occlusions.  Our occlusion-aware
               surface-processing method enables a number of applications
               in an easy way. As examples, we show continuous painting on
               the surface, selecting regions for texturing, creating
               illustrative cutaways from nested models and animation of
               cutaways.",
  month =      may,
  publisher =  "Canadian Human-Computer Communications Society /
               Soci{\'e}t{\'e} canadienne du dialogue humain-machine",
  location =   "Edmonton, Alberta, CA",
  event =      "Graphics Interface 2017",
  doi =        "10.20380/GI2017.11",
  booktitle =  "Proceedings of Graphics Interface 2017",
  pages =      "82--89",
  URL =        "https://www.cg.tuwien.ac.at/research/publications/2017/Radwan-2017-Occ/",
}