Effects of Resampling Method on Data Quality of DEMs

WANG Lei; LONG Yongqing; YANG Qinke

doi:10.13961/j.cnki.stbctb.2016.04.013

您当前的位置：

首页 >

文章列表页 >

Effects of Resampling Method on Data Quality of DEMs

- Effects of Resampling Method on Data Quality of DEMs
- Bulletin of Soiland Water Conservation Vol. 36, Issue 4, Pages: 72-77(2016)
- 作者机构：
  
  1. 西北大学城市与环境学院,陕西,西安,710127
  2. 中国科学院水利部水土保持研究所, 陕西杨陵,712100
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2016.04.013
  CLC：
- Published：2016
- 稿件说明：
移动端阅览
WANG Lei, LONG Yongqing, YANG Qinke. Effects of Resampling Method on Data Quality of DEMs[J]. Bulletin of Soiland Water Conservation, 2016, 36(4): 72-77.
DOI：

WANG Lei, LONG Yongqing, YANG Qinke. Effects of Resampling Method on Data Quality of DEMs[J]. Bulletin of Soiland Water Conservation, 2016, 36(4): 72-77. DOI： 10.13961/j.cnki.stbctb.2016.04.013.

摘要

[目的] 针对在数字地形分析的实际应用问题，利用重采样方法得到的DEM数据精度，旨在分析不同的重采样方法对所获得的DEM数据质量的影响。[方法] 从数据误差的角度，以陕西省绥德县窑家湾沟流域的以全数字摄影测量得到的DEM数据为基准，计算并比较利用重采样方法得到的DEM的数据误差。[结果] 无论采用何种重采样方法，得到DEM数据质量均未得到提高，其高程误差的空间分布与重采样方法相关，地形变化剧烈的地方，误差较大；中误差的大小则取决于重采样方法与原始格网尺寸。[结论] 最近邻法得到的重采样DEM数据的中误差最高，三次立方卷积法的最小，双线性内插法则略高于三次立方卷积法。

Abstract

[Objective] The influences of different resampling methods on the quality of DEMs were analyzed to explain the accuracy of those methods which were widely used in digital terrain analysis. [Methods] Based on data error analysis

the RMSEs of elevation of those DEMs were calculated from different resampling methods

and from the original DEMs generated by digital photogrammetric method in Yaojiawan valley

Suide County of Shaanxi Province Were compared. [Results] No improvement of the quality of resampled DEMs was observed for all the resampling methods. The spatial distribution of elevation error of resampled DEMs depended on the resampling methods. The larger errors emerged in the positions with the vigorous changing of surface. Meanwhile

the values of RMSE were decided by original grid size and the methods of resampling. [Conclusion] The DEMs resampled by nearest method had the highest RMSE

while the Cubic method obtained the lowest RMSE and Bilinear method got slightly higher RMSE than that of Cubic method.

关键词

Keywords

references

陈楠,王钦敏.基于地形因子信息量的数字高程模型分辨率的选择:以黄土高原的研究为例[J].武汉大学学报:信息科学版,2009,34(6):692-695.

陈燕,汤国安,齐清文.不同空间尺度DEM坡度转换图谱分析[J].华侨大学学报:自然科学版,2004,25(1):79-82.

邓仕虎,杨勤科. DEM采样间隔对地形描述精度的影响研究[J].地理与地理信息科学,2010,26(2):23-26.

吴险峰,刘昌明,王中根.栅格DEM的水平分辨率对流域特征的影响分析[J].自然资源学报,2003,18(02):148-154.

张勇,陈良富,柳钦火,等.日照时间的地形影响与空间尺度效应[J].遥感学报,2005,9(5):521-530.

Usery E L, Finn M P, Scheidt D J, et al. Geospatial data resampling and resolution effects on watershed modeling: A case study using the agricultural non-point source pollution model[J]. Journal of Geographical Systems, 2004,6(3):289-306.

Dixon B, Earls J. Resample or not? Effects of resolution of DEMs in watershed modeling[J]. Hydrological Processes, 2009,23(12):1714-1724.

陈永刚,汤国安,祝士杰. DEM重采样误差空间分布格局及差异性分析[J].中国矿业大学学报,2011,40(4):653-659.

苟卫涛,李学清,王秀霞,等.规则格网DEM格网点位移重采样方法探讨[J].测绘标准化,2012,28(3):28-29.

王宇,白天路.重采样方法对DEM地形表达的影响分析[J].工程勘察,2013(3):67-70.

Tao Yang, Tang Guoan, Jia Yini, et al. Research on Optimal Analysis Window Size and Resampling Method According to DEM Analysis Scale[C]//International Workshop on Education Technology and Training & 2008 International Workshop on Geoscience and Remote Sensing. IEEE Computer Society, 2008:369-372.

国家测绘局. GB/T7931-2008 1∶500,1∶1000,1∶2000地形图航空摄影测量外业规范[S].北京:中国标准出版社,2008.

国家测绘局. GB/T7930-2008 1∶500,1∶1000,1∶2000地形图航空摄影测量内业规范[S].北京:中国标准出版社,2008.

国家测绘局. CH/T9008.2-2010基础地理信息成果1∶500,1∶1000,1∶2000数字高程模型[S].北京:测绘出版社,2010.

张祖勋.影象灰度内插的研究[J].测绘学报,1983,12(3):178-188.

Views

1378

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Soil-water characteristics and softening constitutive model of lime-stabilized loess

Spatiotemporal evolution and influencing mechanisms of coupling coordination of carbon reduction-pollution reduction-green expansion-economic growth in urban agglomeration in middle reaches of Yangtze River

Impacts of seasonal drought on carbon-water coupling mechanism in China’s terrestrial ecosystems

Research progress and trends of ecological environment of key lakes in Yangtze River economic belt based on bibliometric analysis

Influence of microtopography on spatiotemporal distribution of soil moisture during snowmelt period and short-term prediction

Related Author

No data

Related Institution

No data

⁰