本文介绍了十二导联心电图各标志点识别的具体实现方法，并且给出了部分程序流程图。
The article introduces the concrete method of how to distinguish the marking points of 12-lead ECG, and also shows part of the procedural flow chart.
目的：实现计算机自动识别头影测量标志点。
Objective:To realize computer automatic identification of landmarks.
模体标志图显示出分布在此抗体识别位点周围的氨基酸。
The Motif Logo shows the amino acid distributions around the sites recognized by the antibody.
利用对标准模板的形变实现不同标志点的识别。
The standard templates were deformed due to different landmarks.
结论：标志点定位的可重复性与标志点所在位置、人眼对标志点的准确识别尤其是在纵向上的识别以及X线片的质量有密切的关系。
Conclusion: the repeatability of identified landmarks is closely related to the location of the landmarks, the landmarks identification by human eyes and the quality of the X-rays.
将所有点对坐标值代入刚体变换线性方程组，用最小二乘法求出从图像空间到手术空间的刚体变换矩阵，最终实现医学图像标志点的自动识别和配准。
Substituting coordinates of all pairs of points into rigid transform equations, one could use least squares to get the rigid transform matrix from image space to surgical space.
将所有点对坐标值代入刚体变换线性方程组，用最小二乘法求出从图像空间到手术空间的刚体变换矩阵，最终实现医学图像标志点的自动识别和配准。
Substituting coordinates of all pairs of points into rigid transform equations, one could use least squares to get the rigid transform matrix from image space to surgical space.
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