@inbook{b4143c2a25f7453cb5d27f93b8e1a41a,
title = "Empirical Evaluation of Terrestrial Laser Scanner Calibration Strategies: Manufacturer-Based, Target-Based and Keypoint-Based",
abstract = "To assure accurate terrestrial laser scanner (TLS) point clouds, the instruments should be repeatedly calibrated in the manufacturer{\textquoteright}s facilities, either in regular time intervals or if they fail the examination on a test-field. This workflow has drawbacks for the end-users: there is no deeper understanding of the calibration procedure and it is time- and money-wise burdening. As an alternative, scientists developed several user-oriented calibration approaches, which are not well accepted in practice. We investigated the differences between the factory calibration and two user-oriented calibration approaches, as well as their interaction. The investigation focuses on the raw point clouds without factory calibration. Our results show that the user-oriented calibration can replace the manufacturer calibration to some degree. However, the user-oriented calibration on top of the manufacturers{\textquoteright} calibration improves the measurement quality beyond the factory calibration. Hence, user-oriented calibration should be considered as an alternative for the re-calibration to deliver up-to-date calibration parameters.",
keywords = "Accuracy, Features, Point cloud, Quality assurance, Systematic errors, TLS",
author = "Tomislav Medi{\'c} and Heiner Kuhlmann and Christoph Holst",
note = "Publisher Copyright: {\textcopyright} 2021, The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland AG.",
year = "2021",
doi = "10.1007/978-3-030-51953-7_4",
language = "English",
series = "Springer Proceedings in Earth and Environmental Sciences",
publisher = "Springer Nature",
pages = "41--56",
booktitle = "Springer Proceedings in Earth and Environmental Sciences",
}