Automatic tracking of crevasses on satellite images

Ian M. Whillans, Yi Hsing Tseng

研究成果: Article

37 引文 斯高帕斯(Scopus)

摘要

Measurements of glacier motion and deformation are obtained by automatically matching features, such as crevasses, on repeat images. A computer-based method identifies and tracks groups of features on successive images, and calculates their displacement, and the rotation and distortion of the ice. Ice deformation within each matched area is permitted and calculated using a least-squares method within each area. The method is applied to SPOT satellite images of ice stream B, Antarctica. A quality-checking scheme rejects inappropriate matches. The results compare satisfactorily with velocities obtained by manual methods from repeat photography of the same region. A simpler version of the method, similar to that used by Bindschadler and Scambos, also obtains very satisfactory results.

原文English
頁(從 - 到)201-214
頁數14
期刊Cold Regions Science and Technology
23
發行號2
DOIs
出版狀態Published - 1995 二月

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Earth and Planetary Sciences(all)

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