为避免测量过程中在现场设置标定参考点，研究了以基础矩阵估计为基础的交通事故摄影图像自标定模型，并分析了其实现过程。

To avoid sitting reference object on scene, the model of self-calibration based on fundamental matrix estimation and its implementation are proposed.

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本文以数控车床为例介绍参考点设置的方法，供用户及同行参考。

Based on CNC table. a reference point presetting method is introduced giving a reference to nc machine to of users and makers.

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