higher plane curve

By using the new method for the detection of general quadric curves proposed by the authors,we investigated the global solutions of planar quadric curves and quadratic surfaces in the space and proposed a unified representation and solving algorithm.

利用所提出的一般二次曲线的检测方法，对空间中平面二次曲线和二次曲面的整体恢复，提出了一种统一的表示和求解算法，并给出多解存在的条件，同时指出如存在平面二次曲线解，则存在二次曲面解；在无先验假设的条件下，基于二次曲线的立体视觉方法需要３个视点才可得到唯一解。

Objective lens of beam expander with a high-order curved surface can correct aberration for a deep relative aperture lens.

带有高次曲面的扩束器物镜能对大相对孔径的透镜校正像差。

This paper present a new method to interpolate high order curve which is used in CNC system,at the time use this method is samed to interpolate a three order curve,the result prove that this method is high efficient and precise.

提出了一种在数控加工中对高次曲线方程进行插补的计算方法,同时利用此方法对实际曲线进行了插补计算结果,证明此方法为一高效精确的插补方法。