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...
Published in: | Geoscientific Instrumentation, Methods and Data Systems |
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Online Access: | https://doi.org/10.5194/gi-5-305-2016 https://gi.copernicus.org/articles/5/305/2016/ |
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ftcopernicus:oai:publications.copernicus.org:gi48535 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 2018-09-27 application/pdf https://doi.org/10.5194/gi-5-305-2016 https://gi.copernicus.org/articles/5/305/2016/ eng eng doi:10.5194/gi-5-305-2016 https://gi.copernicus.org/articles/5/305/2016/ eISSN: 2193-0864 Text 2018 ftcopernicus https://doi.org/10.5194/gi-5-305-2016 2020-07-20T16:24:03Z 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. Text Northern Finland Sodankylä Copernicus Publications: E-Journals 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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Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
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 |
Text |
author |
Savolainen, Tuomas Whiter, Daniel Keith Partamies, Noora |
spellingShingle |
Savolainen, Tuomas Whiter, Daniel Keith Partamies, Noora Automatic segmentation and classification of seven-segment display digits on auroral images |
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 |
publishDate |
2018 |
url |
https://doi.org/10.5194/gi-5-305-2016 https://gi.copernicus.org/articles/5/305/2016/ |
long_lat |
ENVELOPE(26.600,26.600,67.417,67.417) |
geographic |
Sodankylä |
geographic_facet |
Sodankylä |
genre |
Northern Finland Sodankylä |
genre_facet |
Northern Finland Sodankylä |
op_source |
eISSN: 2193-0864 |
op_relation |
doi:10.5194/gi-5-305-2016 https://gi.copernicus.org/articles/5/305/2016/ |
op_doi |
https://doi.org/10.5194/gi-5-305-2016 |
container_title |
Geoscientific Instrumentation, Methods and Data Systems |
container_volume |
5 |
container_issue |
2 |
container_start_page |
305 |
op_container_end_page |
314 |
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