01561nas a2200133 4500008004100000245006000041210005800101300001200159520116000171100001701331700001701348700002201365856004001387 2005 eng d00aA Quantitative Analysis Tool for Cardiovascular Systems0 aQuantitative Analysis Tool for Cardiovascular Systems a121-1263 aCurve-skeletons of 3-D objects are medial axes shrunk to a single line. There are several applications for curve-skeletons. For example, the animation of 3-D objects, such as an animal or a human, as well as planning of flight paths for virtual colonoscopy. Other applications are the extraction of center lines within blood vessel where center lines are used to quantitatively measure vessel length, vessel diameter, and angles between vessels. The described method computes curve-skeletons based on a vector field that is orthogonal to the objectÂs boundary surface. A topological analysis of this field then yields the center lines of the curve-skeletons. In contrast to previous methods, the vector field does not need to be computed for every sampled point of the entire volume. Instead, the vector field is determined only on the sample points on the boundary surface of the objects. Since most of the computational time was spent on calculating the force field in previous methods, the proposed approach requires significantly less time while still achieving a better accuracy and robustness compared to methods based on Voronoi tessellations.
1 aMeyer, Joerg1 aMoritz, Elke1 aWischgoll, Thomas uhttp://knoesis.wright.edu/node/2384