A geodesic-active-contour-based variational model for short-axis cardiac MR image segmentation

作者：Zhu Wei^*; Kang Sung Ha; Biros George

来源：International Journal of Computer Mathematics, 2013, 90(1): 124-139.

DOI：10.1080/00207160.2012.695355

• cardiac segmentation
• geodesic active contour
• level-set method
• 68U10
• 94A08

We propose a novel geodesic-active-contour-based (GAC-based) variational model that uses two level-set functions to segment the right and left ventricles and the epicardium in short-axis magnetic resonance (MR) images. For the right ventricle, the myocardial wall is typically very thin and hard to identify using the resolution of existing MR scanners. We propose to use two level sets to identify both the endocardial wall by pushing away one level-set function from another, in the setting of the edge-driven GAC model with a new edge detection function. Existing edge detection functions have strict restrictions on the location of initial contours. We develop a new edge detection function that relaxes this restriction and propose an iterative method that uses a sequence of edge detection functions to minimize the energy of our model successively. Experimental results are presented to validate the effectiveness of the proposed model.

• 出版日期2013-1-1