| Open Contours Extraction of Rotational Surface Oriented to Layer Measurement |
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| 作者姓名： | 亓利伟 赵毅 李明辉 |
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| 作者单位： | National Die & Mold Research Engineering Center，Shanghai Jiaotong University，Shanghai，200030，National Die & Mold Research Engineering Center，Shanghai Jiaotong University，Shanghai，200030，National Die & Mold Research Engineering Center，Shanghai Jiaotong University，Shanghai，200030 |
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| 摘 要： | With layer-measured contours, an algorithm that can extract the contour segments from a rotational surface is presented. The extraction can be divided into two stages, i. e. the rough segmentation and the refinement. In the rough segmenting stage, an optimal contour matching method is put forward to find similar contour segment from another closed contour with respect to the seed contour. In the refining stage, an iterative way that can extract a circular arc precisely is presented based on parameters identification and contour-ends expanding/shrinking operation. The algorithm can extract the open contour segments from a rotational surface precisely, as demonstrated in the examples. Based on the work of this paper, further research, such as parameter identification of 3 - D surface and CAD model creation, can be conducted.
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Open Contours Extraction of Rotational Surface Oriented to Layer Measurement |
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| QI Li-wei,ZHAO Yi,LI Ming-hui
National Die & Mold Research Engineering Center,Shanghai Jiaotong University,Shanghai.Open Contours Extraction of Rotational Surface Oriented to Layer Measurement[J].Journal of Donghua University,2003,20(3). |
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| Authors: | QI Li-wei ZHAO Yi LI Ming-hui
National Die & Mold Research Engineering Center Shanghai Jiaotong University Shanghai |
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| Institution: | National Die & Mold Research Engineering Center,Shanghai Jiaotong University,Shanghai,200030 |
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| Abstract: | With layer-measured contours, an algorithm that can extract the contour segments from a rotational surface is presented. The extraction can be divided into two stages, i. e. the rough segmentation and the refinement. In the rough segmenting stage, an optimal contour matching method is put forward to find similar contour segment from another closed contour with respect to the seed contour. In the refining stage, an iterative way that can extract a circular arc precisely is presented based on parameters identification and contour-ends expanding/shrinking operation. The algorithm can extract the open contour segments from a rotational surface precisely, as demonstrated in the examples. Based on the work of this paper, further research, such as parameter identification of 3 - D surface and CAD model creation, can be conducted. |
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| Keywords: | Reverse engineering Cross-sectional measurement Segmentation Feature extraction |
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