| 第二次土地调查县级坡度分级图生成关键技术研究 |
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| 引用本文： | 赵鸿燕,魏也纳,戴立乾. 第二次土地调查县级坡度分级图生成关键技术研究[J]. 测绘工程, 2011, 20(4): 77-80 |
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| 作者姓名： | 赵鸿燕 魏也纳 戴立乾 |
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| 作者单位： | 河南省国土资源科学研究院,河南郑州,450053 |
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| 摘 要： | 针对坡度分级图建库中DEM坡度计算模型、边界平滑算法、分县数据裁切批处理等关键技术进行研究,选取Horn算法作为坡度计算模型,采用PAKE算法对图斑边界进行平滑,并建立分县裁切模型进行批处理。研究成果对于类似区域坡度计算具有借鉴意义,为栅格数据自动矢量化及类似建库工作提供技术参考,并可为灾害评估、环境治理等领域提供有效的评价因子。
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| 关 键 词： | 坡度分级图 Horn算法 PAKE算法 |
Research on key technologies in county level slope grade map representation for the Secondary Land Resource Survey |
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| ZHAO Hong-yan,WEI Ye-na,DAI Li-qian. Research on key technologies in county level slope grade map representation for the Secondary Land Resource Survey[J]. Engineering of Surveying and Mapping, 2011, 20(4): 77-80 |
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| Authors: | ZHAO Hong-yan WEI Ye-na DAI Li-qian |
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| Affiliation: | ZHAO Hong-yan,WEI Ye-na,DAI Li-qian(Henan Academy of Land and Resources Sciences,Zhengzhou 450053,China) |
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| Abstract: | The article selects the Horn algorithm to compute slope and PAKE algorithm to smooth arc borders,and builds the cutting model for batch processing according to the research on key technologies such as calculation slope model from DEM,borders smoothing algorithm,county level database building.Research results can be used for reference to calculate slope in the similar regions,provide technical reference in the raster to vector and the similar database building.It will offer an effective evaluation factor for... |
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| Keywords: | slope grade map Horn algorithm PAKE algorithm |
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