Texture Feature Extraction and Classification of SEM Images of Wheat Straw/Polypropylene Composites in Accelerated Aging Test

Figure 8

ROC curves of ELM classification model of SEM image samples of the composites in five different aging periods.

(a) Estimated (black) and cross validation (grey) ROC of class 1

(b) Estimated (black) and cross validation (grey) ROC of class 2

(c) Estimated (black) and cross validation (grey) ROC of class 3

(d) Estimated (black) and cross validation (grey) ROC of class 4

(e) Estimated (black) and cross validation (grey) ROC of class 5