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. 2020 Mar 11;21(Suppl 2):91. doi: 10.1186/s12859-020-3358-4

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© The Author(s) 2020

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided 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 Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 3 — Shi-Tomasi score. In the (λ₁,λ₂) space, only when λ₁ and λ₂ are above a minimum value λ_min, the point is considered as a corner (green hatched area). The white and gray areas represent the conditions in which the point is marked as an edge and a flat region, respectively