An Extract Ecg Curve

In this paper, the ECG curve is extraed from ECG image by using the method of trace curving.Firstly, the background and noise in ECG image is removed by image preprocessing, and thusly there remains the main background lines and the points which belongs to ECG curve; Secondly, exploiting the method of projection the main background lines can be positioned;Finally, according to the co-ntininuty of the ECG curve, from the start point, the whole ECG curve is fetched by the continous tracing.All programs in this paper were written in matlab.