关键词: 测地线主动轮廓（GAC）模型, 局部图像拟合（LIF）模型, 水平集算法, 灰度不均匀

Abstract: As the Geodesic Active Contour（GAC） model brings boundary leakage easily and sensitive to the initialization, and Local Image Fitting（LIF） model traps into local minimums easily, a level set model based on edge and region information is proposed, which can automatically adjust the proportion of GAC and LIF in the fusing model by setting weight. Experiment results demonstrate the method is superior to GAC and LIF model both in terms of speed and effect.

Key words: Geodesic Active Contour（GAC） model, Local Image Fitting(LIF) model, level set algorithm, intensity inhomogeneity