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提出一种基于ＮＵＲＢＳ齐次坐标表示来计算曲线曲面分割问题的方法，把ＮＵＲＢＳ问题转化为四维空间里非有理Ｂ样条问题，就可利用Ｂ样条分割算法来解决，其几何意义明确，求解过程简便易行，便于在ＣＡＤ／ＣＡＭ系统中实现。
A method based on the homogeneous representation of NURBS to calculate the curve and surface segmentation problem is proposed. The NURBS problem can be solved by using the B-spline segmentation algorithm, which turns the NURBS problem into the un-rational B-spline problem in the four-dimensional space. The process is simple and easy to implement in a CAD / CAM system.