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

• Published in: Geoscientific Instrumentation, Methods and Data Systems
• Main Authors: T. Savolainen, D. K. Whiter, N. Partamies
• Format: Article in Journal/Newspaper
• Language: English
• Published: Copernicus Publications 2016
• Subjects: Geophysics. Cosmic physics; QC801-809; Sodankylä; Northern Finland
• Online Access: https://doi.org/10.5194/gi-5-305-2016; https://doaj.org/article/315937e820214d0aa34dd64cb689d008

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...