| 一类保凸的细分格式 |
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| 引用本文： | 王燕,李志明.一类保凸的细分格式[J].数学研究及应用,2017,37(4):489-495. |
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| 作者姓名： | 王燕 李志明 |
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| 作者单位： | 合肥师范学院数学与统计学院, 安徽 合肥 230601,合肥工业大学计算机与信息学院, 安徽 合肥 230009 |
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| 基金项目： | 合肥师范大学人才基金(Grant No.2014rcjj05). |
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| 摘 要： | 提出了一类新的具有高阶连续性和保凸性的5-点二重细分格式.可以证明在参数的某些取值范围内,极限曲线是$C^k~(k=0,1,\ldots,7)$连续的.本文还给出了极限曲线保凸时的参数的取值范围.数值例子表明该格式是灵活有效的.
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| 关 键 词： | 二重细分 收敛和光滑性 保凸 |
| 收稿时间： | 2017/3/17 0:00:00 |
| 修稿时间： | 2017/6/12 0:00:00 |
A Family of Convexity-Preserving Subdivision Schemes |
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| Yan WANG and Zhiming LI.A Family of Convexity-Preserving Subdivision Schemes[J].Journal of Mathematical Research with Applications,2017,37(4):489-495. |
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| Authors: | Yan WANG and Zhiming LI |
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| Institution: | School of Mathematics and Statistics, Hefei Normal University, Anhui 230601, P. R. China and School of Computer and Information, Hefei University of Technology, Anhui 230009, P. R. China |
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| Abstract: | A new five-point binary subdivision scheme with high continuity and convexity preservation is proposed in this paper. It is shown that the limit curves are $C^k~(k=0,1,\ldots,7)$ continuous for the certain range of the parameter. The range of the parameter for the property of convexity preservation of the limit curves is also provided. Experimental results demonstrate the efficiency and flexibility of the scheme. |
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| Keywords: | Binary subdivision convergence and smoothness convexity preservation |
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