Outer contour extraction of CT skull based on curve evolution

When reconstructing three-dimensional model of a skull based on contour lines,it was one of the primary problems to extract the single-deck and outer contour of the skull region accurately and effectively.For the difficulty of extracting such contour from the complex skull shape,this paper presented a method based on curve evolution.It firstly required to segment the image by a threshold to generate the skull region,and then initialized a single-deck and closed curve containing the region.Furthermore,evolved the curve using a novel differential equation.Lastly,extracted outer contour of the skull region.The results of experiences indicate that this method can automatically process the skull CT image,and accurately extract the single-deck and outer contour of the skull,at the same time,efficiently solve the problem of extracting the single-deck and outer contour of the skull.