accepted for publication in the proceedings of Eurographics 2012

Interactive Coherence-Based Façade Modeling

Przemyslaw Musialski^1,2,4

Michael Wimmer¹

Peter Wonka^3,4

¹TU Vienna ²VRVis ³KAUST ⁴ASU

Abstract

We propose a novel interactive framework for modeling building façades from images. Our method is based on the notion of coherence-based editing which allows exploiting partial symmetries across the façade at any level of detail. The proposed workflow mixes manual interaction with automatic splitting and grouping operations based on unsupervised cluster analysis. In contrast to previous work, our approach leads to detailed 3d geometric models with up to several thousand regions per façade. We compare our modeling scheme to others and evaluate our approach in a user study with an experienced user and several novice users.

As shown in the figure above, starting from an orthogonal input image (left top), the user interactively segments the façade into shapes (bottom left). Most split lines and symmetries are found automatically by the system, while the global façade structure is determined by the user. The input resolution is 1024 x 756, the number of visible shapes 1346 and the modeling time about 8 minutes (with material assignment 15 minutes).

Paper

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This is the authors preprint. The definitive version of the paper is available at
http://diglib.eg.org and http://onlinelibrary.wiley.com

BibTeX

@article{musialski-2012-icb,
    title       = {{Interactive Coherence-Based Fa\c{c}ade Modeling}},
    author      = {Musialski, Przemyslaw and Wimmer, Michael and Wonka, Peter},
    journal     = {Computer Graphics Forum (Proceedings of EUROGRAPHICS 2012)},
    number      = {2},
    volume      = {31},
    pages       = {661--670},
    year        = {2012}
    month       = may,
    keywords    = {facade modeling,facade reconstruction,image-based modeling,urban modeling},
    url         = {http://www.cg.tuwien.ac.at/~pm/Facade2012/index.html},
}

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