Figure 3From: Segmentation of MR image using local and global region based geodesic model Graphical representation of two level set model. (a) Blue and red line are considered two zero level set function ϕ 1 and ϕ 2, which divides the image into four regions: C 1, C 2, C 3 and C 4 in (b). (c) The neighborhood of point x, K σ (y - x), is represented by the small black circle. The circle is spilt by the two level set function into local interior and local exterior regions. The small blue dot represents the point y in the local region of x. f 1(y), f 2(y), f 3(y), f 4(y) are computed in the local interior and local exterior region to fit the image intensities near the point y, respectively.Back to article page