Perceptually-motivated shape exaggeration

  • Authors:

  • Xin Zhang;Wei Chen;Jing Fang;Rui Wang;Qunsheng Peng

  • Affiliations:

  • Zhejiang University, State Key Lab of CAD&CG, 310027, Hangzhou, P.R. China;Zhejiang University, State Key Lab of CAD&CG, 310027, Hangzhou, P.R. China;Zhejiang University, State Key Lab of CAD&CG, 310027, Hangzhou, P.R. China;Zhejiang University, State Key Lab of CAD&CG, 310027, Hangzhou, P.R. China;Zhejiang University, State Key Lab of CAD&CG, 310027, Hangzhou, P.R. China

  • Venue:
  • The Visual Computer: International Journal of Computer Graphics
  • Year:
  • 2010

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Abstract

Image communication would appear more efficient if the visual cases of the concerned parts can be enhanced. One way to achieve this is by local shape exaggeration in rendering. In this paper, we present an interactive scheme for controllable local shape exaggeration. Our approach achieves local, direct, and consistent appearance enhancement by modifying the surface orientation in an intuitive and globally optimized manner with sparse user-specified constraints. Compared with previous approaches, the main contribution of this paper is the introduction of adaptive exaggeration function (AEF), which is capable of modulating the extent of detail enhancement to obtain a satisfactory shape exaggeration result. The AEF model is derived based on a series of experiments. We complement our new approach with a variety of examples, user studies, and provide comparisons with recent approaches.