| 基于数学形态学的森林资源数据更新技术研究 |
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| 引用本文： | 吴发云,孙涛,王小昆.基于数学形态学的森林资源数据更新技术研究[J].林业资源管理,2009(5). |
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| 作者姓名： | 吴发云 孙涛 王小昆 |
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| 作者单位： | 国家林业局调查规划设计院,北京,100714 |
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| 基金项目： | 国家十一五林业科技支撑计划课题"森林资源监测技术研究" |
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| 摘 要： | 森林资源数据更新是为了确保数据能及时准确地反映森林资源现状。变化小班矢量化是森林资源数据更新的重要基础工作。由于外业调绘的变化小班与等高线大量交叉,现有的跟踪矢量化算法和软件不能穿透等高线进行小班自动矢量化,导致矢量化工作量大,准确性差,效率低。本文提出基于数学形态学开运算的矢量化方法。运用此方法能够穿越交叉点实现自动矢量化小班,可大大提高更新数据采集的精度和效率。
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| 关 键 词： | 森林资源 数据更新 数学形态学 矢量化 |
Study on Updating Techniques of Forest Resources Data Based on Mathematical Morphology |
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| Abstract: | Data updating of forest resources is to ensure the data reflect the status quo of forest resources timely and accurately.Vectorization of changed sub-compartments is basic to updated forest resources data.The current vector tracking algorithms and software cannot operate the automatic subcompartment vectorization through contour lines,as a result of huge intersecting between changing sub-compartments and contour lines during field inspection.Consequently,the workload of vectorization becomes heavier,and its accuracy and efficiency get lower as well.The vectorization proposed in this paper is based on mathematical morphology.It can make the automatic vectorization of sub-compartments through cross points come true and greatly improve the accuracy and efficiency of updating data collected. |
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| Keywords: | forest resources data updating mathematical morphology vectorization |
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