• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 22 Issue 6
Mar.  2010
Turn off MathJax
Article Contents
YANG Xiaoyun, CEN Minyi, LIANG Xin. Detection of Gross Errors in DEM Based on Principal Components Analysis[J]. Journal of Southwest Jiaotong University, 2009, 22(6): 830-834,854.
Citation: YANG Xiaoyun, CEN Minyi, LIANG Xin. Detection of Gross Errors in DEM Based on Principal Components Analysis[J]. Journal of Southwest Jiaotong University, 2009, 22(6): 830-834,854.

Detection of Gross Errors in DEM Based on Principal Components Analysis

  • Received Date: 13 Nov 2008
  • Publish Date: 20 Jan 2010
  • To probe into the effect of error spatial distribution on the detection rate of gross error for a digital elevation model(DEM),two different models,spike-like and pyramid-like gross error models,were constructed.Data with different gross error rates of 0.2% to 3.0% were simulated and added to DEM randomly.A detection algorithm based on the principal components analysis(PCA) was used for tests.The result shows that whether gross errors are spatially correlated or not,the detection rate decreases with increasing of the gross error rate.To a spike-like gross error,when the rate is below 1.0%,almost all gross errors can be found out.While to a pyramid-like gross error,the detection efficiency decreases to 50% when the rate is equal to 1.0%.It can be found that the spatial relativity and a high gross error rate will cut down the detection rate of the algorithm.

     

  • loading
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索
    Article views(1494) PDF downloads(379) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return