基于空间误差同质区的矢量电子地图快速纠偏算法
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摘要
针对不同年份、厂商、作业流程生产的大区域矢量电子地图存在空间精度偏差问题,特别是矢量数据与影像数据不同源、不套合的情况,提出一种基于空间误差同质区的矢量电子地图纠偏算法。首先,人工提取误差连线,用于误差同质区以及后续纠偏计算;其次,以误差角度为特征进行空间聚类,并且合并同类相邻区域形成误差同质区域,作为后续纠偏的基础单元;最后,引入四叉树空间索引等优化算法进行基于误差同质区域的Delaunay三角网矢量电子地图纠偏。对广东某地市1∶2 000矢量电子地图进行快速纠偏处理,该算法较传统的先纠正再拼接方法效率提高了近4倍,并有效地保持了数据的拓扑关系,可对误差方向不同的地物进行纠偏,并保证很高的纠偏精度。
A vector map rectification algorithm based on spatial error homogeneous area is proposed in this paper,to solve spatial accuracy differences of large-area vector map,which has been produced by different manufacturers and operation procedures in different years,especially the non-precisely overlay between vector map and image data from different sources.Firstly,spatial error lines between same objects are measured to calculate spatial error homogeneous region and differences rectification.Secondly,differences directions clustering are processed to construct spatial error homogeneous region by merging the adjacent regions,the results will be used as the basic unit for map rectification.Finally,map are rectified based on spatial error homogeneous region using optimization algorithm.Compaing to traditional methods,the results of fast rectifing a city′s 1∶2 000-scale vector data indicate that the efficiency of differences rectification increased by 4 times,the topological relationship was effectively maintained,and different objects with different differences directions can be precisely rectified.
A vector map rectification algorithm based on spatial error homogeneous area is proposed in this paper,to solve spatial accuracy differences of large-area vector map,which has been produced by different manufacturers and operation procedures in different years,especially the non-precisely overlay between vector map and image data from different sources.Firstly,spatial error lines between same objects are measured to calculate spatial error homogeneous region and differences rectification.Secondly,differences directions clustering are processed to construct spatial error homogeneous region by merging the adjacent regions,the results will be used as the basic unit for map rectification.Finally,map are rectified based on spatial error homogeneous region using optimization algorithm.Compaing to traditional methods,the results of fast rectifing a city′s 1∶2 000-scale vector data indicate that the efficiency of differences rectification increased by 4 times,the topological relationship was effectively maintained,and different objects with different differences directions can be precisely rectified.
引文
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[2]赵泉华,蔡影,鲍勇.Mapinfo下矢量图形纠正方法的研究与实现[J].矿山测量,2006,34(1):31-32.
[3]彭晓艳,龙毅,毋河海.基于仿射变换的MapInfo矢量图形坐标纠正的方法探讨[J].测绘信息与工程,2002,27(5):6-7.
[4]卜坤,张树文,杨久春,等.基于Delaunay三角网的Shapefile几何纠正算法与实现[J].吉林大学学报(地球科学版),2008,38(3):521-526.
[5]LI B F,SHEN Y Z,ZHANG X F,et al.Seamless multivariate affine error-in-variables transformation and its application to map rectification[J].International Journal of Geographical Information Science,2013,27(8):1572-1592.
[6]朱蕊.多源空间矢量数据一致性处理技术研究[D].郑州:解放军信息工程大学,2012.
[7]杨永崇.地形图变形的分块纠正法[J].测绘通报,2001,47(10):25-26.
[8]逯跃锋.基于形状特征的矢量数据与影像数据配准方法研究[J].测绘学报,2014,58(8):879.
[9]王占宏,吴满意,田怀启,等.单片调绘矢量数据的正射纠正[J].测绘通报,2017,63(2):75-78.
[10]王峰,林宗坚.航空影象与地图的配准纠正[J].中国图象图形学报,2001,6(4):78-81.
[11]SMITH D P,ATKINSON S F.Accuracy of rectification using topographic map versus GPS ground control points[J].Photogrammetric Engineering&Remote Sensing,2001,67(5):565-570.
[12]WHITE M S,GRIFFIN P.Piecewise linear rubber-sheet map transformation[J].American Cartographer,1985,12(2):123-131.
[13]DOYTSHER Y,HALL J K.Gridded affine transformation and rubber-sheeting algorithm with FORTRAN program for calibrating scanned hydrographic survey maps[J].Computers&Geosciences,1997,23(7):785-791.
[14]DOYTSHER Y.A rubber sheeting algorithm for non-rectangular maps[J].Computers&Geosciences,2000,26(9):1001-1010.
[15]SAALFELD A.A fast rubber-sheeting transformation using simplicial coordinates[J].American Cartographer,1985,12(2):169-173.
[16]李月华,李先怡.基于遥感的矢量电子地图质量提升自动化方法研究[J].北京测绘,2016,30(5):100-103,108.
[17]阎超德,赵学胜.GIS空间索引方法述评[J].地理与地理信息科学,2004,20(4):23-26.
[18]任常青,陈白,张信丽.ArcMap空间纠正模块在矢量纠正中的应用与策略探讨[J].测绘标准化,2010,26(3):17-19.
[19]范冲,王东亮.基于FME的CAD数据坐标转换工具开发及实现[J].测绘与空间地理信息,2014,37(4):10-13.
[20]张菊清,杨元喜,曾安敏.多种地图坐标系统的转换方法及比较[J].测绘通报,2008,54(8):32-35.