研究了在特殊成像条件（摄像机纯旋转）下直接由图像序列进行自标定的方法。
Study how to realize camera self-calibration directly from image sequence under special imaging condition (camera pure rotation).
提出了一种基于圆环点的新的摄像机自标定方法。
A new easy technique for calibrating a camera based on circular points is proposed.
通过对图像瞄准系统中的畸变分析，提出以激光长度测量值作为长度基准的成像系统在线自标定方法。
In this paper the distortion of image collimating system is analyzed, and then an on-line self-calibration method with double-frequency laser length measuring result as length datum is presented.
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