中文摘要：

针对目前基于标靶或特征点的点云拼接需3个及以上公共点、使得算法计算及编程变得复杂的问题，提出了一种基于2个公共点的简单拼接模型。首先在测站间获取2个公共点的两套坐标，再根据平面坐标转换思想求解测站间转换参数，包括3个平移参数和1个角度参数。使用本研究算法、七参数算法以及徕卡CIO扫描仪配套软件Cyclone内嵌算法进行解算试验，结果表明，本研究算法解算结果不仅满足精度要求，而且易于编程，计算效率高，在实际应用中具有一定的可行性。

英文摘要：

At present, point cloud registration based on targets or feature points needs at least three common points, which makes the calculation and the programming complex. In order to solve the problem, a simple registration model based on two points is proposed. Firstly getting two set coordinates of the common points between scan stations, then calculating the transformation parameters according to planner coordinate transformation thought. The parameters include three translation parameters and one angle parameter. Using the proposed algorithm, seven-parameter algorithm and the inline algorithm of Cyclone software of C10 scanner to calculate, the results show that the proposed algorithm meets the accuracy and is easy to program with high efficiency. The algorithm is feasible in practice.