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. 2019 Oct 21;9:15046. doi: 10.1038/s41598-019-50992-6

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© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Visualization of the estimation errors for the BMW-World (left), Sydney Opera House (center), and Nymphenburg Castle (right). The black building represents the true ratio and the grey building shows the median adjustment by all participants. The three displayed buildings do not have a traditional floor concept or roof structure and are among the ones with the largest errors of all tested buildings.