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. 2018 Feb 17;18(2):611. doi: 10.3390/s18020611

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© 2018 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 (http://creativecommons.org/licenses/by/4.0/).

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2D scatter plots of samples corresponding to different polarimetric features. Each color represents one land cover type. (a) $T_{11}$ – $T_{22}$ , (b) $T_{11}$ – $T_{33}$ , (c) $T_{22}$ – $T_{33}$ , (d) ${| H H |}^{2}$ – ${| V V |}^{2}$ , (e) ${| H H |}^{2}$ – $| ρ |$ , (f) ${| V V |}^{2}$ – $| ρ |$ , (g) H– $α$ , (h) H–A, (i) $α$ –A, (j) $Y P_{S}$ – $Y P_{V}$ , (k) $Y P_{S}$ – $Y P_{D}$ , (l) $Y P_{V}$ – $Y P_{D}$ , (m) $V P_{S}$ – $V P_{V}$ , (n) $V P_{S}$ – $V P_{D}$ , (o) $V P_{V}$ – $V P_{D}$ . The power-related features are divided by $s p a n$ for visualization.

2D scatter plots of samples corresponding to different polarimetric features. Each color represents one land cover type. (a) $T_{11}$ – $T_{22}$ , (b) $T_{11}$ – $T_{33}$ , (c) $T_{22}$ – $T_{33}$ , (d) ${| H H |}^{2}$ – ${| V V |}^{2}$ , (e) ${| H H |}^{2}$ – $| ρ |$ , (f) ${| V V |}^{2}$ – $| ρ |$ , (g) H– $α$ , (h) H–A, (i) $α$ –A, (j) $Y P_{S}$ – $Y P_{V}$ , (k) $Y P_{S}$ – $Y P_{D}$ , (l) $Y P_{V}$ – $Y P_{D}$ , (m) $V P_{S}$ – $V P_{V}$ , (n) $V P_{S}$ – $V P_{D}$ , (o) $V P_{V}$ – $V P_{D}$ . The power-related features are divided by $s p a n$ for visualization.