Frederic Cordier |
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Research Topics: Texture Mapping Freeform Sketching |
Cordier F., Seo H., "Free-Form
Sketching of Self-Occluding Objects", IEEE Computer Graphics and
Applications, special issue on Sketching, Volume 27, Issue 1, pp. 50-59,
January/February 2007. Abstract:
In this paper, we propose a method for reconstructing a 3D object (or a set
of objects) from a 2D drawing provided by a designer. The input 2D drawing
consists of a set of contours that may partially overlap each other or be
self-overlapping. Accordingly, the resulting 3D object(s) may occlude each
other or be self-occluding. The proposed method is composed of three major
steps: 2D contour analysis, 3D skeleton computation, and 3D object
construction. Our main contribution is to compute the 3D skeleton from the
self-intersecting 2D counterpart. We formulate the 3D skeleton construction
problem as a sequence of optimization problems, to shape the skeleton and
place it in the 3D space while satisfying C1-continuity and intersection-free
conditions. Our method is mainly for a silhouette-based sketching interface
for the design of 3D objects including self-intersecting objects. Demonstration videos (requires QuickTime 7): Some results of the Sketching
Interface:
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