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. 2021 Mar 11;12(4):2015–2026. doi: 10.1364/BOE.417896

Fig. 2.

Fig. 2.

Confusion matrix for the support vector machine (SVM) classification model generated via 5-fold cross validation. The model was trained and validated with spectra acquired intra-operatively during the study. The Healthy group contains spectra of dermis, epidermis, inflamed dermis, fat and muscle. The Contaminants group contains spectra of surgical ink and substrate. Number of spectra for each group presented in parenthesis.