在拟合每个轮廓线时，先用非接触测量系统测出的数据反算出ee样条曲线控制多边形的顶点。
When fitting each contour line, the points measured by non - contact measuring system are as the top points about control polygon for forming EE spline curve.
描述了数字图像处理技术用于非接触精确测量的原理，对整个顶点识别过程做了详细的探讨，给出了满意的识别结果。
The paper describes the principle of the technology of digital image procession applied in untouched measure, and details the whole process of vertex recognition, and gets a kind result.
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