中文摘要：

提出了一种基于空间共面直线从单幅图像进行摄像机自标定的线性方法。本方法结合工程应用实际，直接利用场景的直角信息，根据点的中心投影关系，推导直线的投影关系，基于平面上不平行的3条直线，由单幅图像线性的高精度的标定出摄像机内、外参数。算法用仿真实验和实拍图像都得到了精确、可靠的结果，在精度上明显优于基于共面点的算法。

英文摘要：

A novel linear approach using space-coplanar-line to perform camera self-calibration from a single image is presented. Combined with engineering applications, the method directly utilizes rectangular information of the scene and the centrical projection relation of the point to obtain the projection relation of the lines. The linear internal and external parameters of high precision calibration of the camera are derived based on three unparallel coplanar lines. The results of synthetic and real images are accurate and reliable with this method, whose precision is obviously better than that with the space-coplanar-point method.