A Hybrid Method for Pancreas Extraction from CT Image Based on Level Set Methods

Figure 3

Energy-tune results based on initial pancreas region. (a) Is original image. (b) Is selection of seed points and standard line. (c) Shows initial pancreas region which is regarded as energy source. (d) Is edge feature map. (e) The energy tune based on standard line reduces the energy of pixels near standard line and enhances energy of pixels inside initial pancreas region. (f) Automatic energy tune reduces energy of pixels of which distance to energy source is larger than the distance threshold.

(a) Original image  

(b) Seed points and standard line

(c) Initial pancreas region

(d) Edge feature map

(e) Edge feature map after energy tune based on standard line

(f) Edge feature map after energy tune without standard line