| 基于栅格数据的面状目标空间方向相似性研究 |
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| 引用本文： | 郭庆胜,丁虹.基于栅格数据的面状目标空间方向相似性研究[J].武汉大学学报(信息科学版),2004,29(5):447-450,465. |
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| 作者姓名： | 郭庆胜 丁虹 |
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| 作者单位： | 武汉大学资源与环境科学学院,武汉市珞喻路129号,430079 |
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| 基金项目： | 教育部青年骨干教师基金资助项目 ( 2 0 0 0G0 7) |
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| 摘 要： | 提出了基于栅格数据的面状目标之间的两种空间方向相似性的计算方法：利用栅格数据的特征和方向关系矩阵计算空间方向相似性；基于单个栅格单元与参考目标之间角度的变化计算面状目标之间空间方向相似性。这两种方法简化了由Goyal提出的基于方向关系矩阵模型计算空间方向相似性的方法，克服了方向产生某些细微变化时的限制，在计算面状目标空间方向相似性时具有更广泛的适用性。
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| 关 键 词： | 空间相似性 栅格数据 方向关系矩阵 空间方向相似性 面状目标 |
| 文章编号： | 1671-8860(2004)05-0447-04 |
Similarity for Spatial Directions Between Areal Objects in Raster Data |
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| GUO Qingsheng,DING Hong.Similarity for Spatial Directions Between Areal Objects in Raster Data[J].Geomatics and Information Science of Wuhan University,2004,29(5):447-450,465. |
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| Authors: | GUO Qingsheng DING Hong |
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| Institution: | GUO Qingsheng 1 DING Hong 1 |
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| Abstract: | Two methods for calculating similarity for spatial directions between areal objects in raster data are given: one is based on the features of raster data and the directional matrix to calculate the similarity for spatial directions; the other is based on the variation of angle between each raster cell and a reference object to calculate the similarity for spatial directions. The two methods simplify the calculation of similarity given by Goyal for spatial directions based on direction matrix model, or overcome the limitation of direction small change. The two methods have broader applicability to calculating the similarity for spatial directions. |
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| Keywords: | spatial similarity raster data direction relations direction relations' matrix similarity for spatial directions |
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