Figure 2

Examples of images which were correctly and incorrectly classified by the convolutional neural network (CNN). PS represents the probability score. (a) Duodenum image, which was incorrectly classified by the CNN as the lower stomach (left) and a correctly classified image from the duodenum (right). (b) Esophagus image, which was incorrectly classified by the CNN as the lower stomach (left) and a correctly classified image from the lower stomach (right). (c) Duodenum image, which was incorrectly classified by the CNN as the middle stomach (left) and a correctly classified image from the upper stomach (right). (d) Larynx image, which was incorrectly classified by the CNN as the esophagus (left) and a correctly classified image from the esophagus (right).