Figure 8.

Articles distributed by category. DL: use of deep learning for feature extraction and classification; DL+TML: use of deep learning for feature extraction and traditional machine learning for classification; TML/*: use only traditional machine learning using only geometric features (TML/G), only texture (TML/T), only intensity-based (TML/I), geometric combined with texture (TML/G+T), geometric combined with intensity (TML/G+I), or texture combined with intensity (TML/T+I).