Automatic segmentation and classification of seven-segment display digits on auroral images
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 ob...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00011813 2023-05-15T17:42:24+02:00 Automatic segmentation and classification of seven-segment display digits on auroral images Savolainen, Tuomas Whiter, Daniel Keith Partamies, Noora 2016-07 electronic https://doi.org/10.5194/gi-5-305-2016 https://noa.gwlb.de/receive/cop_mods_00011813 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00011770/gi-5-305-2016.pdf https://gi.copernicus.org/articles/5/305/2016/gi-5-305-2016.pdf eng eng Copernicus Publications Geoscientific Instrumentation, Methods and Data Systems -- Geosci. Instrum. Meth. Data Syst. -- http://www.geoscientific-instrumentation-methods-and-data-systems.net/home.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2690575 -- 2193-0864 https://doi.org/10.5194/gi-5-305-2016 https://noa.gwlb.de/receive/cop_mods_00011813 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00011770/gi-5-305-2016.pdf https://gi.copernicus.org/articles/5/305/2016/gi-5-305-2016.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2016 ftnonlinearchiv https://doi.org/10.5194/gi-5-305-2016 2022-02-08T22:56:20Z 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. Article in Journal/Newspaper Northern Finland Sodankylä Niedersächsisches Online-Archiv NOA Sodankylä ENVELOPE(26.600,26.600,67.417,67.417) Geoscientific Instrumentation, Methods and Data Systems 5 2 305 314 |
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Open Polar |
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Niedersächsisches Online-Archiv NOA |
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English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Savolainen, Tuomas Whiter, Daniel Keith Partamies, Noora Automatic segmentation and classification of seven-segment display digits on auroral images |
topic_facet |
article Verlagsveröffentlichung |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Savolainen, Tuomas Whiter, Daniel Keith Partamies, Noora |
author_facet |
Savolainen, Tuomas Whiter, Daniel Keith Partamies, Noora |
author_sort |
Savolainen, Tuomas |
title |
Automatic segmentation and classification of seven-segment display digits on auroral images |
title_short |
Automatic segmentation and classification of seven-segment display digits on auroral images |
title_full |
Automatic segmentation and classification of seven-segment display digits on auroral images |
title_fullStr |
Automatic segmentation and classification of seven-segment display digits on auroral images |
title_full_unstemmed |
Automatic segmentation and classification of seven-segment display digits on auroral images |
title_sort |
automatic segmentation and classification of seven-segment display digits on auroral images |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/gi-5-305-2016 https://noa.gwlb.de/receive/cop_mods_00011813 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00011770/gi-5-305-2016.pdf https://gi.copernicus.org/articles/5/305/2016/gi-5-305-2016.pdf |
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ENVELOPE(26.600,26.600,67.417,67.417) |
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Sodankylä |
geographic_facet |
Sodankylä |
genre |
Northern Finland Sodankylä |
genre_facet |
Northern Finland Sodankylä |
op_relation |
Geoscientific Instrumentation, Methods and Data Systems -- Geosci. Instrum. Meth. Data Syst. -- http://www.geoscientific-instrumentation-methods-and-data-systems.net/home.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2690575 -- 2193-0864 https://doi.org/10.5194/gi-5-305-2016 https://noa.gwlb.de/receive/cop_mods_00011813 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00011770/gi-5-305-2016.pdf https://gi.copernicus.org/articles/5/305/2016/gi-5-305-2016.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/gi-5-305-2016 |
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Geoscientific Instrumentation, Methods and Data Systems |
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5 |
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305 |
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314 |
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