球B样条曲线结合树状结构的脑血管表示模型
发布时间：2018-09-07 15:03
【摘要】：针对分割之后的脑血管体数据场,提出基于球B样条曲线结合树状结构的表示模型.该模型中主要分为3个步骤表示脑血管:首先采用Hessian矩阵结合弹性球的方法获取脑血管的中心线和半径信息,可提高中心线的求取精度并且在中心线的求取过程中即可获得半径;然后对获得的中心线和半径进行树状重构,得到符合血管的形态拓扑结构,便于对脑血管进行遍历;最后对重构之后的每一分支血管采用球B样条曲线的方式来描述,以对脑血管病变区域进行检测,并能针对不同大小的显示窗口采用多尺度方式绘制.实验结果表明,文中模型在脑血管的显示、病灶检测等方面具有极大优势.
[Abstract]:A representation model based on spherical B-spline curve and tree structure is proposed for the segmented cerebrovascular body data field. The model is mainly divided into three steps: firstly, the information of the center line and radius of cerebral vessels is obtained by using Hessian matrix and elastic sphere. It can improve the accuracy of the central line and obtain the radius in the process of obtaining the center line, and then the obtained center line and radius are reconstructed in tree shape, and the morphological topological structure of the blood vessel is obtained, which is convenient to traverse the cerebral vessels. Finally, each branch of the reconstructed blood vessel is described by the B-spline curve of the ball, which detects the area of cerebrovascular disease, and can be plotted in multi-scale mode for the display window of different sizes. The experimental results show that the model has great advantages in the display of cerebral vessels and the detection of lesions.
【作者单位】： 北京师范大学信息科学与技术学院;
【基金】：国家自然科学基金(61003134,61170170) 北京市自然科学基金重点项目(4081002)
【分类号】：R312;TP391.41
[Abstract]:A representation model based on spherical B-spline curve and tree structure is proposed for the segmented cerebrovascular body data field. The model is mainly divided into three steps: firstly, the information of the center line and radius of cerebral vessels is obtained by using Hessian matrix and elastic sphere. It can improve the accuracy of the central line and obtain the radius in the process of obtaining the center line, and then the obtained center line and radius are reconstructed in tree shape, and the morphological topological structure of the blood vessel is obtained, which is convenient to traverse the cerebral vessels. Finally, each branch of the reconstructed blood vessel is described by the B-spline curve of the ball, which detects the area of cerebrovascular disease, and can be plotted in multi-scale mode for the display window of different sizes. The experimental results show that the model has great advantages in the display of cerebral vessels and the detection of lesions.
【作者单位】： 北京师范大学信息科学与技术学院;
【基金】：国家自然科学基金(61003134,61170170) 北京市自然科学基金重点项目(4081002)
【分类号】：R312;TP391.41
【参考文献】
相关期刊论文 前3条
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2 马p，
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