automatic segmentation and classification of seven-segment display digits on auroral images

Clicks: 129
ID: 223760
2016
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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.
Reference Key
savolainen2016geoscientificautomatic Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;T. Savolainen;D. K. Whiter;N. Partamies
Journal radiologic technology
Year 2016
DOI
10.5194/gi-5-305-2016
URL
http://www.geosci-instrum-method-data-syst.net/5/305/2016/gi-5-305-2016.pdf
Keywords
geophysics cosmic physics

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