Automatic segmentation and classification of seven-segment display digits on auroral images
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2016-07-21
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Language
en
Pages
10
305-314
305-314
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GEOSCIENTIFIC INSTRUMENTATION, METHODS AND DATA SYSTEMS, Volume 5, issue 2
Abstract
In this paper we describe a new and fully automatic method for segmenting and classifying digits in seven-segment displays. The method is applied to a dataset consisting of about 7 million auroral all-sky images taken during the time period of 1973-1997 at camera stations centred around Sodankylä observatory in northern Finland. In each image there is a clock display for the date and time together with the reflection of the whole night sky through a spherical mirror. The digitised film images of the night sky contain valuable scientific information but are impractical to use without an automatic method for extracting the date-time from the display. We describe the implementation and the results of such a method in detail in this paper.Description
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Savolainen, T, Keith Whiter, D & Partamies, N 2016, ' Automatic segmentation and classification of seven-segment display digits on auroral images ', Geoscientific Instrumentation, Methods and Data Systems, vol. 5, no. 2, pp. 305-314 . https://doi.org/10.5194/gi-5-305-2016