Treffer: Self-overlapping curves: Analysis and applications.

Abstract: When a disk in 2D is stretched arbitrarily with possible self-overlaps, without twisting it, its boundary forms a complex curve known as a self-overlapping curve. The mapping between the disk and its deformed self, also called an immersion of the disk, is useful in many applications like shape morphing and curve interpretation. Given a self-overlapping curve, an algorithm for computing its immersion is presented, which has an average time complexity quadratic in the number of points on the curve. [Copyright &y& Elsevier]