| 基于自由型特征的NURBS曲线设计 |
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| 引用本文： | 李爱民,尚可超. 基于自由型特征的NURBS曲线设计[J]. 机械, 2014, 0(6): 17-21 |
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| 作者姓名： | 李爱民 尚可超 |
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| 作者单位： | 西安科技大学机械学院; |
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| 基金项目： | 陕西省教育厅自然科学基金(11jk0859) |
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| 摘 要： | 自由型特征由于其自身的复杂性、不确定性使其表示、编辑及操作十分困难。利用信号处理技术——小波多分辨率分析,将NURBS曲线从单一尺度几何表示的空域空间变换为频域空间的表示形式。通过小波滤波器组完成了对模型的整体特征和自由型特征的分离,从而实现了NURBS曲线基于自由型特征的编辑、操作和控制。该方法不仅提高了NURBS曲线几何建模的效率,而且有效克服了传统NURBS曲线建模的繁琐和费时。
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| 关 键 词： | NURBS曲线 自由型特征 小波 多分辨率分析 |
Design of NRUBS curve based on free-form feature |
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| LI Ai-min,SHANG Ke-chao. Design of NRUBS curve based on free-form feature[J]. Machinery, 2014, 0(6): 17-21 |
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| Authors: | LI Ai-min SHANG Ke-chao |
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| Affiliation: | ( School of Mechanical Engineering, Xi＇an University of Science and Technology, Xi＇an 710054, China ) |
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| Abstract: | It remains very hard for free-form features to represent, edit, and operate them because of their complexity and uncertainty. The present paper establishes NURBS curve multi-resolution representation by signal processing technology（wavelet multi-resolution technology）, NURBS cures made changed from single-scale geometric space to frequent space. Through a wavelet filter bank, separation is fulfilled for total features and detail features of a model. Based on free-form features, this makes it easy for NURBS curve editing, operation, and control and so on. This approach not only improves geometric modeling efficient, also overcomes miscellaneousness and troublesomeness. |
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| Keywords: | NURBS curve free-form feature wavelet multi-resolution analysis |
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