Fig. 1. Schematic diagram of the label of the eye area image. (a) Original image; (b) label image

Fig. 2. Structure of the S-RITnet

Fig. 3. Structure of the ESRGAN

Fig. 4. Reproduction results of eye area images of different algorithms. (a) Original image; (b) bilinear interpolation; (c) bicubic interpolation; (d) ESRGAN

Fig. 5. Comparison of image equalization effect. (a) Orignial image; (b) linear transformation; (c) Gamma transformation; (d) HE; (e) CLAHE

Fig. 6. Structure of the RITnet

Fig. 7. Experiment evaluation curve and segmentation results. (a) MIoU curve of the validation set; (b) segmentation results of each data set

Fig. 8. Segmentation results of the RITnet data set. (a) Original image; (b) BE50-RITnet; (c) BE100-RITnet; (d) S-RITnet (NE); (e) label