Surface Relief Analysis for Illustrative Shading

Lucas Ammann 1, 2 Pascal Barla 1, 2 Xavier Granier 1, 2 Gael Guennebaud 1, 2 Patrick Reuter 1, 2
1 MANAO - Melting the frontiers between Light, Shape and Matter
LaBRI - Laboratoire Bordelais de Recherche en Informatique, Inria Bordeaux - Sud-Ouest, LP2N - Laboratoire Photonique, Numérique et Nanosciences
Abstract : In this paper, we present an analysis technique that leverages the complexity found in detailed 3D models for illustrative shading purposes. Given a smooth base surface with relief, it locates relief features (concavities, convexities and inflections) around each surface point and at multiple scales, using cubic-polynomial fitting. This object-space, per-vertex information is then used to guide a variety of shading techniques including normal enhancement, feature visualization, accessibility shading and radiance scaling. Thanks to this approach, features at multiple scales are easily combined, filtered and shaded, allowing users to explore surface relief in real-time.
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Submitted on : Monday, June 18, 2012 - 6:24:02 PM
Last modification on : Thursday, July 4, 2019 - 4:02:33 PM
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Lucas Ammann, Pascal Barla, Xavier Granier, Gael Guennebaud, Patrick Reuter. Surface Relief Analysis for Illustrative Shading. Computer Graphics Forum, Wiley, 2012, 31 (4), pp.1481-1490. ⟨10.1111/j.1467-8659.2012.03144.x⟩. ⟨hal-00709492⟩

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