Research Output
Reliability of manual assessments in determining the types of vegetation on railway tracks
  Current day vegetation assessments within railway maintenance are (to a large extent) carried out manually. This study has investigated the reliability of such manual assessments by taking three non-domain experts into account. Thirty-five track images under different conditions were acquired for the purpose. For each image, the raters’ were asked to estimate the cover of woody plants, herbs and grass separately (in %) using methods such as aerial canopy cover, aerial foliar cover and sub-plot frequency. Visual estimates of raters’ were recorded and analysis-of-variance tests on the mean cover estimates were investigated to see whether if there were disagreements between the raters’. Intra-correlation coefficient was used to study the differences between the estimates. Results achieved in this work revealed that seven out of the nine analysis-of-variance tests conducted in this study have demonstrated significant difference in the mean estimates of cover

  • Date:

    18 December 2015

  • Publication Status:


  • Publisher

    Springer International Publishing

  • DOI:


  • Library of Congress:

    QA75 Electronic computers. Computer science

  • Dewey Decimal Classification:

    004.2 Systems analysis, design & performance


Nyberg, R. G., Yella, S., Gupta, N. K., & Dougherty, M. (2015). Reliability of manual assessments in determining the types of vegetation on railway tracks. In J. Wang, W. Cellary, D. Wang, H. Wang, S. Chen, T. Li, & Y. Zhang (Eds.), Web Information Systems Engineering – WISE 2015. , (391-399).




Railway maintenance; vegetation; analysis-of-variance tests;

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