A local region-based Chan-Vese model for image segmentation

Authors:
Shigang Liu;Yali Peng
Affiliations:
School of Computer Science, Shaanxi Normal University, Xi'an 710062, China and School of Electronics and Information Engineering, Xi'an Jiaotong University, Xi'an 710049, China;School of Computer Science, Shaanxi Normal University, Xi'an 710062, China
Venue:
Pattern Recognition
Year:
2012

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Abstract

In this paper, a new region-based active contour model, namely local region-based Chan-Vese (LRCV) model, is proposed for image segmentation. By considering the image local characteristics, the proposed model can effectively and efficiently segment images with intensity inhomogeneity. To reduce the dependency on manual initialization in many active contour models and for an automatic segmentation, a degraded CV model is proposed, whose segmentation result can be taken as the initial contour of the LRCV model. In addition, we regularize the level set function by using Gaussian filtering to keep it smooth in the evolution process. Experimental results on synthetic and real images show the advantages of our method in terms of both effectiveness and robustness. Compared with the well-know local binary fitting (LBF) model, our method is much more computationally efficient and much less sensitive to the initial contour.