Segmenting reliefs on triangle meshes
Proceedings of the 2006 ACM symposium on Solid and physical modeling
Industrial geometry: recent advances and applications in CAD
Computer-Aided Design
Information Sciences: an International Journal
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We present a novel approach for representing and evolving deformable active contours by restricting the movement of the contour vertices to the grid lines of a uniform lattice. This restriction implicitly controls the (re)parameterization of the contour and hence makes it possible to employ parameterization-independent evolution rules. Moreover, the underlying uniform grid makes self-collision detection very efficient. Our contour model is also able to perform topology changes, but – more importantly – it can detect and handle self-collisions at subpixel precision. In applications where topology changes are not appropriate, we generate contours that touch themselves without any gaps or self-intersections.