Edge stopping function based on structure tensor for active contours
FU Maochen, Chuanjiang He, Wang Yan · Computer Engineering and Applications Journal · 2011
All of edge-based active contour models rely on edge stopping function.It is typically a decreasing function of the gradient magnitude of Gaussian smoothed image.In identifying object edges,however,image gradient does not take into account some important features such as junctions and corners;this results in the inaccurate location of edges or even false segmentations.Based on a measure of local coherence of image structure tensor,this paper proposes a new edge stopping function.Experimental results show that an active contour model using the new edge stopping function can significantly perform better in the location of edges,while it is much faster and more robustness to noise than the original model.