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Automatic digitization of pluviograph strip charts

Aleš Jaklič and Luka Šajn and Gašper Derganc and Peter Peer (2016) Automatic digitization of pluviograph strip charts. Meteorological Applications, 23 . pp. 57-64. ISSN 1469-8080

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    Abstract

    An algorithm for automatic digitization of pluviograph strip charts is presented. The rainfall signal is incrementally extracted from the scanned image of a strip chart by combining the moving average method and the curve edge following method. The mechanical properties of float-based rain gauge were used as constraints in the algorithm design. The algorithm was tested on 58 strip chart images. The comparison between the data derived from the algorithm and the data from the Slovenian Environment Agency shows that the algorithm produces an accurate rainfall time series except for the charts that contain ink smudges. Thus, the algorithm is well suited as a main component of an interactive system that would enable visual inspection of the detected rainfall curve and its possible adjustment.

    Item Type: Article
    Keywords: pluviograph; rainfall gauge; digitization; computer vision; automatic extraction
    Institution: University of Ljubljana
    Department: Faculty of Computer and Information Science
    Divisions: Faculty of Computer and Information Science > Computer Vision Laboratory
    Item ID: 3228
    Date Deposited: 22 Jan 2016 12:56
    Last Modified: 01 Feb 2017 00:07
    URI: http://eprints.fri.uni-lj.si/id/eprint/3228

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