Automatic Segmentation and Measurement of Vasculature in Retinal Fundus Images Using Probabilistic Formulation

Figure 3

Linear search window: 𝑈 and 𝑉 are the vessel edge points, 𝑂 is the center point, 𝐷 is the vessel direction, and 𝑘 is the index of the iteration. 𝐿_𝑘 is the linear search window at iteration 𝑘. Black points on 𝐿_𝑘 show the possible locations of new edge points.