Cintiq pro 13

One researcher drew the anatomical structure on the respective video frames using Wacom Cintiq Pro 13 (Wacom Co., Ltd., Otone, Saitama, Japan), which was confirmed by a physician. A closed curve was drawn, which involved the thyroid cartilage and the vocal folds (TV complex, TVC) on one frame in every three frames for efficient learning (Fig. 1). Another closed curve was also drawn, which involved the C1 spinous process, which was used as a reference for measuring laryngeal elevation. In addition, a third closed curve was drawn, which involved the anterior margin of the hyoid bone and airway column of the pharynx and larynx, to improve the efficiency of the Mask R-CNN learning process. Manual segmentation took 6 months (December 3, 2018, to May 31, 2019). We manually segmented 5620 video frames from 12 video clips of the patients.

One researcher drew the anatomical structure on the respective video frames using Wacom Cintiq Pro 13 (Wacom Co., Ltd., Otone, Saitama, Japan), which was confirmed by a physician. A closed curve was drawn, which involved the thyroid cartilage and the vocal folds (TV complex, TVC) on one frame in every three frames for efficient learning (Fig. 1). Another closed curve was also drawn, which involved the C1 spinous process, which was used as a reference for measuring laryngeal elevation. In addition, a third closed curve was drawn, which involved the anterior margin of the hyoid bone and airway column of the pharynx and larynx, to improve the efficiency of the Mask R-CNN learning process. Manual segmentation took 6 months (December 3, 2018, to May 31, 2019). We manually segmented 5620 video frames from 12 video clips of the patients.