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Figure 3 | BioMedical Engineering OnLine

Figure 3

From: Segmentation of MR image using local and global region based geodesic model

Figure 3

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.

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