特点是不用对摄像机进行标定，使用方便，算法简单，运算速度快，识别距离远。
The features of the approach are calibration-free camera, convenient to use, quick computing and far distance recognition.
在已知一个消隐点的情况下，利用交比不变性及消隐点的知识对摄像机进行标定。
A linear camera calibration method with vanishing point and the invariance of cross-ratio is proposed.
在已知一个消隐点的情况下，利用交比不变性及消隐点的知识对摄像机进行标定。
Based on the cross-ratio invariance theorem, a new method for acquiring characteristic points in the calibration of line structure-light sensor was proposed.
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