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带有倾斜因子的摄像机自标定方法

DOI: 10.11834/jig.20030114

Keywords: 摄像机自标定,三维重建,绝对二次曲线

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Abstract:

摄像机自标定是三维重建技术的基本问题,得到许多学者的大力研究.为了简化摄像机自标定过程,一般假设摄像机内参数中的倾斜因子为零,然后对主点和焦距进行自标定.但在摄像机模型为完全的射影模型时,即当倾斜因子(SkewFactor)值较大时,则使用上述假设得到的自标定参数误差较大,有时甚至无法得到结果.为了对倾斜因子值较大的摄像机进行准确标定,提出了一种当摄像机的倾斜因子已知但不为零时的摄像机自标定方法,试验结果证明该方法可以得到比较准确的摄像机内参数,并可使得后续的三维重建得到较好的结果.

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