基于凸多边形顶点检测的肝脏CT灌注图像肋骨和脊椎骨分割方法研究

在参考肋骨和脊椎骨解剖学位置特征基础上,设计了高效的基于凸多边形顶点检测的肋骨和脊椎骨检测和分割方法.该方法首先针对肝脏CT灌注图像的基本特点,采用高斯滤波和最大相关准则法进行二值化;然后基于凸多边形检测的方法,对肋骨和脊椎骨二值化区域进行分割.实验结果表明,该算法有效地实现了肝脏CT灌注图像中肋骨和脊椎骨的分割.因计...

Rib and spine segmentation method based on convex polygon vertex detection in liver CT perfusion images

An efficient method dedicated to detecting and segmenting of the rib and spine was introduced based on convex polygon vertex detection utilizing position and anatomic characteristics of the rib and spine. Firstly, according to the basic characteristics of liver CT perfusion images, the Gaussian blurring technique and maximum correlation criterion was utilized to obtain the binary image, and then the binarified regions of the rib and spine were segmented based on convex polygon vertex detection. Experimental results show that the algorithm can effectively segment the rib and spine in liver CT perfusion images. Due to relatively low computation cost together with adoption of fast implementation to the large time-consuming connected components labeling and analysis, the presented method runs with a most high speed. The method has great reference value in clinical application to further liver segmentation and registration in liver CT computer-aided diagnosis system.