根据双目CCD三维结构光摄影测量系统的特点 ,提出了一种新的确定摄像机图像中心和比例因子的方法。该方法的特点是不需要任何其他设备的帮助 ,仅依靠对多幅图像数据的分析 ,就能分离中间矩阵 ,得到摄像机的图像中心和比例因子。这种方法有效地解决了传统两步法中必须靠预标定确定比例因子和图像中心的问题。实践表明 ,这种方法方便快捷 ,具有很好的实用性。 According to the characteristics of binocular CCD three-dimensional structured light photogrammetry system, a new method to determine camera center and scale factor is proposed. The method is characterized by no need of any other equipment to help, just rely on the analysis of multiple image data, you can separate the intermediate matrix, the camera’s image center and the scale factor. This method effectively solves the problem that the traditional two-step method must rely on pre-calibration to determine the scale factor and image center. Practice shows that this method is fast and convenient and has good practicability.