Fig. 1. (a) Original OCT retinal image and (b) filtered image

Fig. 2. Extracting boundary of OCT image. (a) Original OCT retinal image; (b) boundary extracting image

Fig. 3. (a) Schematic of retina boundary sampling and (b) fitted boundary curve

Fig. 4. (a) Sampling process and (b) offset calculation process

Fig. 5. Average offset of one frame image responding to different curve fitting orders. (a) Curve fitting order of 4; (b) curve fitting order of 2; (c) curve fitting order of 3; (d) curve fitting order of 5

Fig. 6. Offset result for each frame image

Fig. 7. 3D reconstructed images before and after calibration. (a) Before calibration; (b) after calibration; (c) before calibration (section); (d) after calibration (section)