Interactive Modeling of City Layouts using Layers of Procedural Content

Markus Lipp, Daniel Scherzer, Peter Wonka, Michael Wimmer
Interactive Modeling of City Layouts using Layers of Procedural Content
Computer Graphics Forum (Proceedings EG 2011), 30(2):345-354, April 2011. [ draft]
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Abstract

In this paper, we present new solutions for the interactive modeling of city layouts that combine the power of procedural modeling with the flexibility of manual modeling. Procedural modeling enables us to quickly generate large city layouts, while manual modeling allows us to hand-craft every aspect of a city. We introduce transformation and merging operators for both topology preserving and topology changing transformations based on graph cuts. In combination with a layering system, this allows intuitive manipulation of urban layouts using operations such as drag and drop, translation, rotation etc. In contrast to previous work, these operations always generate valid, i.e., intersection-free layouts. Furthermore, we introduce anchored assignments to make sure that modifications are persistent even if the whole urban layout is regenerated.

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@article{lipp2011a,
  title =      "Interactive Modeling of City Layouts using Layers of
               Procedural Content",
  author =     "Markus Lipp and Daniel Scherzer and Peter Wonka and Michael
               Wimmer",
  year =       "2011",
  abstract =   "In this paper, we present new solutions for the interactive
               modeling of city layouts that combine the power of
               procedural modeling with the flexibility of manual modeling.
               Procedural modeling enables us to quickly generate large
               city layouts, while manual modeling allows us to hand-craft
               every aspect of a city. We introduce transformation and
               merging operators for both topology preserving and topology
               changing transformations based on graph cuts. In combination
               with a layering system, this allows intuitive manipulation
               of urban layouts using operations such as drag and drop,
               translation, rotation etc. In contrast to previous work,
               these operations always generate valid, i.e.,
               intersection-free layouts. Furthermore, we introduce
               anchored assignments to make sure that modifications are
               persistent even if the whole urban layout is regenerated. ",
  pages =      "345--354",
  month =      apr,
  number =     "2",
  event =      "Eurographics 2011",
  issn =       "0167-7055",
  journal =    "Computer Graphics Forum (Proceedings EG 2011)",
  volume =     "30",
  location =   "Llandudno, UK",
  URL =        "http://www.cg.tuwien.ac.at/research/publications/2011/lipp2011a/",
}