X线颅颌面影像标志点的自动识别

Automatic recognition of cephalomatric landmarks

目的 研究计算机对X线颅颌面影像标志点的自动识别。方法 使用计算机提取出的X线颅颌面图象 ,对标志点的自动识别过程为 :①以FH平面为基准进行分区 ;②运用三次样条插值法使曲线光滑 ;③使用轮廓跟踪技术进行标志点的寻找 ;④使用拟合逼近进行拟圆 ;⑤进行二值化以确定两曲线的交点。结果 提取出了颅颌面 3 1个标志点。结论 进行计算机对X线颅颌面影像特征点的识别研究 。

Objectives To study automatic location of cephalomatric landmarks by computer. Methods The image from automatic recognition of cephalograms was used. The process of automatic location was:①To provide separated regions based on the FH Plane.②To obtain fitted smooth curves by using cubic spline interpolation.③To find the landmarks by using the contour search technique.④To determine the single circle center by the fitted circle using fitted approximation.⑤To determine the intersection points by choice.Results Locating 31 landmarks in cephalometric image. Conclusion The study shows potential for the automatic recognition of cephalograms. The results was established for further study.