Fuzzy set in geometric modeling

Geometric modeling involving uncertainty of data is the major problem in CAGD. By using the theory of fuzzy set and its properties, the issues of uncertainty can be solved through the concept of fuzzy numbers. We apply fuzzy numbers as uncertainty data and defined a new kind of fuzzy control points. With this type of points we then introduced a fuzzy Bezier curve and fuzzy B-spline. By these definitions, we construct a curve of such fuzzy spline and given an example of fuzzy Bezier curve and fuzzy B-spline in the context of CAGD at the end of this concept papers.