| 基于区域划分的屏幕饱和度计算模型 |
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| 引用本文： | 邓红艳,王英杰.基于区域划分的屏幕饱和度计算模型[J].测绘科学,2010,35(3):153-155. |
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| 作者姓名： | 邓红艳 王英杰 |
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| 作者单位： | 中国科学院地理与资源环境研究所,北京,100101;空军指挥学院,北京,100097;中国科学院地理与资源环境研究所,北京,100101 |
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| 摘 要： | 为解决现有屏幕饱和度计算模型浪费计算资源,计算结果与实际有时不符等问题,提出了一种基于区域划分的屏幕饱和度计算模型。该方法的主要步骤是:①针对空间目标进行自适应聚类,获取空间目标的疏密分布;②境界,高等级水系,高等级道路联合构建拓扑形成拓扑面,拓扑面与聚类结果进行叠置分析,形成待计算划分区域;③对划分区域分别进行屏幕饱和度计算。实践表明,该方法通过对划分后的可见小区域分别计算,有效弥补了原方法的缺陷。
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| 关 键 词： | 屏幕饱和度 计算 区域划分 |
A calculative model of screen saturation based on region partition |
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| DENG Hong-yan,WANG Ying-jue.A calculative model of screen saturation based on region partition[J].Science of Surveying and Mapping,2010,35(3):153-155. |
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| Authors: | DENG Hong-yan WANG Ying-jue |
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| Abstract: | To solve the problems that the model of computing screen saturation wastes computing resource or the results do not conform to reality sometimes, a computing model based on region partition was proposed.The main steps of the method include; first, sparseness and denseness distribution are obtained by spatial objects adaptive clustering; second, boundary, high-grade water, high-grade roads were united to build topological area, then partition regions were formed by overlay analysis; finally, the screen saturation of every partition region was computed.Practices indicated that this method could effectively offsets the problem inherent in conventional method. |
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| Keywords: | screen saturation calculation region partition |
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