Bay,T., Raffin,R., Daniel,M
In order to design a patient-specific simulator of pelvic organs, MoDyPe project considers the organs as thick surfaces. Starting from a closed parametric surface for the outer hull, an offset approach is applied. However, respecting the thickness on the surface and ensuring the absence of self-intersection is impossible if the shape has too important local curvatures. Two iterative approaches are presented. The first method is based on continuous parametric representation, while the second presents a discrete representation to define the model.