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基于周期性延伸的三次B样条闭曲线插值(Interpolation of Cubic B-spline Closed Curve Based on Periodic Extension)
闭曲线 三次B样条插值 带状阵 周期性延伸
2009/12/28
针对闭曲线具有可周期性延伸的特点,提出了一种基于求解双列带阵线性方程组的三次B样条完全闭曲线插算法。通过节点向量和控制点在曲线闭合点两端的周期性延伸,使插值曲线在闭合点实现了理论上的完全封闭。针对曲线插值线性方程组中系数矩阵具有不完全带阵的特点,提出了一种双列带阵线性方程组求解算法。应用实例表明,算法性能稳定、效率高、可插值任意形状的复杂闭曲线,适于处理大数据量闭曲线插值运算。
Issues Related to Marketing and Extension for Sustainable Agricultural Production in Turkey
Sustainable Agricultural Production Turkey
2009/1/23
Sustainable agriculture, although a difficult term to define operationally, includes the practice of low input agricultural production technologies. An important condition to adopt these technologies...