
Feature(SURF)and ChanVese model was proposed to resolve
this problem. Firstly, the weak boundary of heart chamber in
the first frame was marked manually. Then, the SURF points
around the boundary were extracted to build Delaunay
triangulation. The positions of weak boundaries of subsequent
frames were predicted using feature points matching between
adjacent frames. The coarse contour was extracted using
ChanVese model, and the fine contour of object could be
acquired by region growing algorithm. The experiment proves
that the proposed algorithm can effectively extract the contour
of heart chamber with weak edges, and the result is similar to
that by manual segmentation.
英文关键词 Key words:echocardiography; ChanVese
model; Delaunay triangulation;Speeded Up Robust Feature
(SURF) algorithm; chamber segmentation
0 引言
超声心动图的腔室的正确分割与提取,对临床定量分
析、病灶判断、医学辅助诊断有着重要的意义。但由于医生
手动分割超声图像心室十分耗时、人工成本巨大,就衍生出
对超声心动图的腔室自动分割的急切需求。
近年来超声图像的自动分割技术发展迅速,目前常用的
超声图像主流分割方法有几何活动轮廓、参数活动轮廓[1]、