针对大视场摄像机标定中高精度大尺寸靶标加工困难，小尺寸靶标标定精度不高的问题，提出了一种二维柔性拼接标定方法。二维柔性拼接靶标由多个小平面标定板(又称为子标定板)组成，每个子标定板平面上分为匹配区和扩展区，其中匹配区由编码点组成，多个子标定板通过编码点进行匹配，虚拟拼接成一个大面积的平面靶标(又称为母标定板)，通过计算可以得到母标定板上的坐标值及其相应的像点，从而可以标定出摄像机的内参数。仿真和实验结果表明，该方法和大面积的靶标标定的精度相当，当大面积标定板上的标志点和子标定板扩展区标志点数相同时，其标定相对误差为2%左右。该方法的优点在于制备标定板灵活方便，可以无限制地扩展标定面积。

A camera calibration method based on the flexible spliced two-dimensional target is proposed to orercome the problems in the camera calibration that a large scale target with high precision is hard to fabricate, and the smaller one cannot satisfy the required accuracy. According to this problem. The flexible spliced two-dimensional target consists of many small planar targets (called sub-target). Each sub-target includes a matching area and an extending area. Those sub-targets are combined into a virtual large scale planar target (called mother-target) by encode in the matching area and the camera parameters are calibrated by the mother-target. Simulation and real experiment results indicate that the accuracy of the proposed calibration method is almost the same as that of Zhang’s calibration method using a large planar target with the point numbers similar to that of the flexible spliced two-dimensional target. The relative error of the calibration result of them is less than 2%. This method shows his advantages in that the target is convenient to be fabricated, and the area of target can be extended infinitely.