A method based fitting of moving quadric surface with variable windows for detecting gross errors in irregular DEM

Xiao Yun Yang, Li Ya Gu, Min Yi Cen, Zhilin Li

Research output: Journal article publicationJournal articleAcademic researchpeer-review

4 Citations (Scopus)


The presence of gross errors will distort the spatial variation presentation in digital elevation model (DEM). In some cases, totally undesirable and unacceptable results may be produced in DEM and its derived products due to the existence of such gross errors. Therefore, the detection of gross error in DEM has been becoming the focus that people greatly concern for. Depend on analyzing the existing algorithms of detecting gross errors in DEM based on the point wise method, a new algorithm(YXY algorithm) based on fitting of moving quadric surface with variable windows is established in this paper. Some simulated examples are given by Monte Carlo Method to verify that the method proposed is more reliable and correct than existing method.
Original languageChinese (Simplified)
Pages (from-to)148-153
Number of pages6
JournalActa Geodaetica et Cartographica Sinica
Issue number2
Publication statusPublished - 1 May 2005


  • Digital elevation model
  • Fitting of moving quadric surface
  • Gross error

ASJC Scopus subject areas

  • Computers in Earth Sciences

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