主要介绍了B样条曲线的数学定义和性质,以及在工程时间中的应用,以及B样条曲线的改进-mainly on the B-spline curve of mathematical definition and nature, and the construction time of application, and the B-spline curve improvements

在CAD中，用分段三次B样条来表达自由曲线是很理想的，为此，采用三次B样条曲线来拟合这条折线. ... 其中， 3d.gif (1661 bytes) ，确定了系数a、b、c，相应地就确定了拟合函数. 3)确定型值点求出拟合函数后，取点Pk((1/2)l，yp)作为型值点. ... -in CAD, and cubic B-spline curves to the freedom of expression would be the ideal, for cubic B-spline cur