为了更好利用已经积累的各种医学信息，本文讨论了一种利用Ｂ－样条平滑变换和图象边缘轮廓跟踪法识别坐标纸上曲线的方法．该方法在相当大的正规化参数范围内，可以在有效的去除不需要的细节噪声的同时，能很好地保证提取的曲线精度，为处理生物医学信号提供了新的有效手段，具有很好的应用前景。 In order to make better use of the accumulated medical information, this paper discusses a method of identifying the curve on the paper by B-spline smoothing and image edge contour tracking. The method can effectively remove the unnecessary detail noise and ensure the accuracy of the extracted curve within a fairly large range of the normalized parameters, and provides a new effective method for processing the biomedical signals, which is very good The application prospects.