Fig. 2

Flow chart of the present study. OSCC, Oral squamous cell carcinoma; DCNN, Deep Convolutional Neural Network; VGG16, Visual Geometry Group 16-layer network; VGG19, Visual Geometry Group 19-layer network; ResNet50, Residual Network with 50 layers; ResNet152, Residual Network with 152 layers; Grad-CAM, Gradient-weighted Class Activation Mapping.