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. 2018 Aug 29;8:13034. doi: 10.1038/s41598-018-31379-5

Figure 4.

Figure 4

(a) Raman k-means cluster (k = 6) images M0, M1 and M2 in longitudinal and transverse directions with cluster centre. (b) NIR k-means cluster (k = 5) images M0, M1 and M2 in longitudinal and transverse directions with cluster centre.