Example-Based Fractured Appearance

Loeïz Glondu 1 Lien Muguercia 2 Maud Marchal 1 Carles Bosch 2 Holly Rushmeier 3 Georges Dumont 1 George Drettakis 4
1 VR4I - Virtual Reality for Improved Innovative Immersive Interaction
IRISA - Institut de Recherche en Informatique et Systèmes Aléatoires, ENS Cachan - École normale supérieure - Cachan, Inria Rennes – Bretagne Atlantique
4 REVES - Rendering and virtual environments with sound
CRISAM - Inria Sophia Antipolis - Méditerranée
Abstract : A common weathering effect is the appearance of cracks due to material fractures. Previous exemplar-based aging and weathering methods have either reused images or sought to replicate observed patterns exactly. We introduce a new approach to exemplar-based modeling that creates weathered patterns on synthetic objects by matching the statistics of fracture patterns in a photograph. We present a user study to determine which statistics are correlated to visual similarity and how they are perceived by the user. We then describe a revised physically-based fracture model capable of producing a wide range of crack patterns at interactive rates. We demonstrate how a Bayesian optimization method can determine the parameters of this model so it can produce a pattern with the same key statistics as an exemplar. Finally, we present results using our approach and various exemplars to produce a variety of fracture effects in synthetic renderings of complex environments. The speed of the fracture simulation allows interactive previews of the fractured results and its application on large scale environments.
Type de document :
Article dans une revue
Computer Graphics Forum, Wiley, 2012, 31 (4), pp.1547-1556. 〈10.1111/j.1467-8659.2012.03151.x〉
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Soumis le : jeudi 15 novembre 2012 - 15:34:08
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Loeïz Glondu, Lien Muguercia, Maud Marchal, Carles Bosch, Holly Rushmeier, et al.. Example-Based Fractured Appearance. Computer Graphics Forum, Wiley, 2012, 31 (4), pp.1547-1556. 〈10.1111/j.1467-8659.2012.03151.x〉. 〈hal-00752381〉



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