Abstract
Although such functions as Bezier, B-Spline and NURBS are widely used in Computer Graphics for generating any free-formed surfaces, they are not necessarily appropriate for describing the existing surfaces; they need structured data sets according to a grid. Their mathematical structures (the patch methods) make it almost impossible to obtain entirely smooth surface. To overcome these problems, an application of parameterized polynomial functions was proposed in this study. By using our parameterized polynomial, the artificial knee joint surface was described mathematically and the results were fully compared with those from B-Spline in terms of accuracy and smoothness.
