Figure 2From: Automatic analysis of selected choroidal diseases in OCT images of the eye fundusThe course of image pre-processing. The subsequent steps of L GRAY image analysis: filtration with a median filter – L MED , determination of the RPE layer (retinal pigment epithelium) – y RPE (n), coordinate system conversion – L CHO . These steps are part of the image pre-processing which is necessary for further analysis of images.Back to article page