Fig. 4.

Foveal detection in the presence of acquisition artifacts. Left: shifted b-scan causes partial occlusion of the retinal layers; middle: this results in lower total retinal thickness in the occluded region and large localization error of the method based on thinnest point of the retina (blue dot) in comparison to the manual ground-truth (green dot); right: the proposed method considers a large point neighborhood in the image to detect fovea (blue dot) and as a result it is not affected by shifting acquisition artifacts