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. 2022 Jun 8;8(6):163. doi: 10.3390/jimaging8060163

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Results obtained using the algorithms proposed by (a) Deng and Manjunath [99]; (b) Chen et al. [101]; (c) Han et al. [102]; (d) Rother et al. [103]. Images referenced from Ilea and Whelan [105].