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http://dx.doi.org/10.9723/jksiis.2014.19.2.085

Railway Object Recognition Using Mobile Laser Scanning Data  

Luo, Chao (요크대학교 지리정보공학과)
Jwa, Yoon Seok (요크대학교 지리정보공학과)
Sohn, Gun Ho (요크대학교 지리정보공학과)
Won, Jong Un (한국철도기술연구원)
Lee, Suk (한국철도기술연구원)
Publication Information
Journal of Korea Society of Industrial Information Systems / v.19, no.2, 2014 , pp. 85-91 More about this Journal
Abstract
The objective of the research is to automatically recognize railway objects from MLS data in which 9 key objects including terrain, track, bed, vegetation, platform, barrier, posts, attachments, powerlines are targeted. The proposed method can be divided into two main sub-steps. First, multi-scale contextual features are extracted to take the advantage of characterizing objects of interest from different geometric levels such as point, line, volumetric and vertical profile. Second, by considering contextual interactions amongst object labels, a contextual classifier is utilized to make a prediction with local coherence. In here, the Conditional Random Field (CRF) is used to incorporate the object context. By maximizing the object label agreement in the local neighborhood, CRF model could compensate the local inconsistency prediction resulting from other local classifiers. The performance of proposed method was evaluated based on the analysis of commission and omission error and shows promising results for the practical use.
Keywords
Railway Object Recognition; Conditional Random Field; Contextual Classifier; Mobile Laser Scanning;
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