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ThinkMind // SENSORCOMM 2011, The Fifth International Conference on Sensor Technologies and Applications // View article sensorcomm_2011_11_50_10162


Virtual Ground Truth in Vehicular Sensing Experiments: How to Mark it Accurately

Authors:
Girts Strazdins
Artis Mednis
Reinholds Zviedris
Georgijs Kanonirs
Leo Selavo

Keywords: real-world experiment experience; data quality; vehicular sensing; participatory sensing; Android OS

Abstract:
Road surface quality monitoring is an important requirement for efficient, safe and comfortable transportation. However, the data collection is made difficult by the scope of the data source. Therefore, participatory sensing is a promising approach for road damage assessment. We are developing a vehicular participatory sensing application using Android smart-phones for pothole detection. This paper describes lessons learned from our field tests, which have exposed the deficiencies in terms of collected data quality. Nevertheless, the tests provide invaluable experience for planing future field tests and improvements to the test execution procedure for vehicular sensing researchers. Based on empirical and analytical results, we conclude, that semi-automated ground-truth reference point recording by a human observer in a moving vehicle while doing the actual data collection is imprecise as a consequence of multiple technical and human factors. We also discuss the motivation, why careful pothole position marking and categorization by walking along the test track is capable of providing highly accurate ground-truth.

Pages: 295 to 300

Copyright: Copyright (c) IARIA, 2011

Publication date: August 21, 2011

Published in: conference

ISSN: 2308-4405

ISBN: 978-1-61208-144-1

Location: Nice/Saint Laurent du Var, France

Dates: from August 21, 2011 to August 27, 2011

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