| 从栅格数据直接建立拓扑关系的算法研究 |
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| 引用本文： | 朱振兴.从栅格数据直接建立拓扑关系的算法研究[J].遥感学报,1993(3). |
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| 作者姓名： | 朱振兴 |
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| 作者单位： | 中国科学院资源与环境信息系统国家重点实验室 |
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| 摘 要： | 本文提出了从栅格数据直接建立拓扑关系的思想,用跟踪过程中容易获得的拓扑信息来优化拓扑生成的算法模型,借以提高拓扑生成的效率。本文还提出用连通性区域填充的方法处理各种任意复杂岛的思想。
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| 关 键 词： | 弧段跟踪 拓扑生成 多边形 岛 |
Algorithm Research and Implementation of Building Topological Relation Directly from Raster Data for GIS |
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| Zhu Zhenxing.Algorithm Research and Implementation of Building Topological Relation Directly from Raster Data for GIS[J].Journal of Remote Sensing,1993(3). |
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| Authors: | Zhu Zhenxing |
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| Abstract: | Manually digitizing maps for GIS is tedious, time consuming and imprecise. It has been a "bottleneck" in building GIS database. A new algorithm of combining the tracing and topological building to build the topological relationship directly from thinned raster data is proposed in the paper. It makes use of the topological information, that can be easily obtained in the processing of tracing to optimize the algorithm model of topological building, so the efficiency will be greatly improved. Lastly, a new thought of using the connected area fill method to deal with the complex island polygon is also presented in the paper. |
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| Keywords: | Tracing Topological building Polygon Island |
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