叙述了光纤几何参数的自动测试方法。光纤断面通过显微光学系统成像 ,由CCD摄像头接收 ,并通过图像采集系统传输到计算机中 ,供进一步处理。介绍了测量原理及数学模型 ,采用了图像增强、图像分割等处理技术 ,消除图像噪声 ,从光纤断面图像中提取有效信息。采用不同的算法 ,精确计算了光纤几何参数 ,编制了实用化软件。提供了实测结果及二、三维图示。根据上述原理与技术研制的仪器 ,操作简便 ,测量精度高 Describes the automatic testing method of optical fiber geometric parameters. The optical fiber section was imaged by a microscopic optical system, received by a CCD camera, and transmitted to a computer through an image acquisition system for further processing. The measurement principle and mathematical model are introduced. The image enhancement and image segmentation are adopted to eliminate the image noise and extract the effective information from the optical fiber cross - sectional image. Using different algorithms, accurate calculation of optical fiber geometry, the preparation of practical software. Provide the measured results and two, three-dimensional icon. According to the above principle and technology developed instruments, easy operation, high precision