| 线状要素化简算法的分析与评估 |
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| 引用本文： | 陈波,朱鲲鹏,薛本新.线状要素化简算法的分析与评估[J].测绘科学技术学报,2007,24(2):121-124. |
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| 作者姓名： | 陈波 朱鲲鹏 薛本新 |
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| 作者单位： | 信息工程大学,测绘学院,河南,郑州,450052;72515部队,山东,济南,250014;信息工程大学,测绘学院,河南,郑州,450052;测绘信息中心,北京,100088 |
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| 摘 要： | 线状要素是地图中量最大、形式最多样的要素,它们的化简在自动制图综合中非常重要.目前对线状要素化简的算法研究较多,但其化简质量却少有研究.针对化简算法的基本要求,提出了易于操作的评估化简算法质量的6个方面:面积差、弯曲度、最大拐角比率、化简变化趋势、化简结果一致性和自相交性.通过大量实验,比较了Douglas-Peucker等算法的化简效果,最后对化简中的自相交问题提出了相应的改正措施.
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| 关 键 词： | 线状要素 自动综合 化简 质量评估 |
| 文章编号： | 1673-6338（2007）02-0121-04 |
| 收稿时间： | 2006-10-21 |
| 修稿时间： | 2007-01-13 |
Quality Assessment of Linear Features Simplification Algorithms |
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| CHEN Bo,ZHU Kun-peng,XUE Ben-xin.Quality Assessment of Linear Features Simplification Algorithms[J].Journal of Zhengzhou Institute of Surveying and Mapping,2007,24(2):121-124. |
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| Authors: | CHEN Bo ZHU Kun-peng XUE Ben-xin |
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| Institution: | 1. Institute of Surveying and Mapping, Information Engineering University, Zhengzhou 450052, China; 2. 72515 Troops, Jinan 250014, China; 3. Surveying and Mapping Information Center, Beijing 100088, China |
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| Abstract: | Linear element is the largest various element in the map. Line simplifying is very. important in auto-generalization. There are many simplifying methods most of which are practical and effective. Considering the principles of simplifying, six aspects have been proposed to estimate these methods which are area-difference, bend ratio, maximal-bend-angle ratio, change-uptrend, result-coherence and self-intersection. The effect between Douglas-Peucker and Beam of Light has been compared by many experiments. At last, the corresponding step has been proposed to settle self-intersection. |
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| Keywords: | linear feature automated generalization simplifying quality evaluate |
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