| 白晓亮,贺强,张树生.基于局部特征匹配的旋转对称提取[J].高技术通讯(中文),2012,22(6):651~656 |
| 基于局部特征匹配的旋转对称提取 |
| Rotational symmetry extraction based on local feature match |
| 修订日期：2011-05-30 |
| DOI： |
| 中文关键词: 旋转对称， 分割， 形状分布， 迭代最近点， 均值漂移， 逆向工程 |
| 英文关键词: rotational symmetry, segmentation, shape distribution, iterative closest point, mean shift, reverse engineering |
| 基金项目:国家自然科学基金（60573177，51175434） |
| 作者 | 单位 | | 白晓亮 | 西北工业大学现代设计与集成制造教育部重点实验室 | | 贺强 | 西北工业大学现代设计与集成制造教育部重点实验室 | | 张树生 | 西北工业大学现代设计与集成制造教育部重点实验室 |
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| 中文摘要: |
| 提出了一种基于局部特征匹配的旋转对称提取算法，为基于特征的逆向工程提供了一种新的对称约束的提取方法。该算法首先利用特征线将模型分割成对应各个特征类型的体素的集合；然后计算各个体素的形状分布曲线，通过形状分布曲线匹配的方式获取几何形状相似的体素，并利用最小包围盒从中提取大小相似的体素以构成对称体素的集合；最后利用迭代最近点算法计算对称体素的旋转对称信息并利用均值漂移算法优化提取的对称。实验结果表明，体素分割结果对应构成模型的各个特征，具有明显的工程语义，对称提取结果的误差较小并具有较强的鲁棒性。 |
| 英文摘要: |
| An algorithm for extraction of rotational symmetry based on local feature match is presented to provide a new symmetric restriction extraction method for the feature based reverse engineering. The algorithm can be described below: Firstly, a model is segmented into the set of voxels which are corresponding to each feature based on its feature lines. Then, for each voxel, a shape distribution histogram is calculated with the D2 shape distribution function. By comparing each pair of shape distribution histogram using well know curve matching techniques，the voxels with the similar geometric shape are acquired and a set of symmetric voxels are constructed by the ones with a similar minimum bounding box. Finally, the symmetry is extracted by the algorithm of iterative closest point and optimized by the mean shift approach. The experimental result shows that the voxels of the segmentation corresponding to the features which are composed of the model have obvious engineering semantics and the extracted symmetry information is accurate and robust. |
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