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彩色地形图矢量化算法的设计与实现
引用本文:邓开来.彩色地形图矢量化算法的设计与实现[J].地理空间信息,2009,7(1):138-140.
作者姓名:邓开来
作者单位:信息工程大学,测绘学院,河南,郑州,450052
基金项目:国家高技术研究发展计划(863计划),国家自然科学基金 
摘    要:提出了一种从彩色扫描地形图中提取等高线的方法。其中,在等高线细化方面采用局部细化的策略,在智能跟踪中提出了方向式搜索,不仅避免了像素点的重复判断,而且保证了追踪过程的正确性。采用了一些有代表性的国家标准地形图进行测试,通过计算具体度量指标对提取结果作了定量分析。实验表明该方法在实际应用中具有很好的实用性。

关 键 词:彩色地形图  等高线  智能跟踪  矢量化

Design and Realization of Vectorization Algorithm on Color Scanned Top-ographical Maps
DENG Kailai.Design and Realization of Vectorization Algorithm on Color Scanned Top-ographical Maps[J].Geospatial Information,2009,7(1):138-140.
Authors:DENG Kailai
Institution:Institute of Surveying and Mapping;Information Engineering University;Zhengzhou 450052;China
Abstract:In this paper an effective method for extracting contour lines from color scanned topographical maps is proposed. In contour lines thinning, local thinning strategy is adopted. In automatic tracking, an orientation-based searching mode is also proposed, which not only avoids repeat judgement, but also guarantees correctness of the tracking process. Finally, some representative national standard topographic maps with a scale of 1:50,000 are tested, and an evaluation scheme for the results is provided. The ex...
Keywords:color topographic map  contour lines  automatic tracking  vectorization  
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