本文提出了基于光条纹图像方向与重心法相结合的方法，首先手阈值法获取条纹中心初值，然后，通过光条纹图像的灰度梯度计算条纹法线方向，最后，在法线方向用重心法提取光条纹重心。对线结构光中心提取非常有帮助。-This paper presents method based on the combination of light stripe image with center of gravity method, first of all hand threshold method get the initial center of stripe, then through the gray gradient of light stripe image calculation to the normal direction of the stripe. Finally, in a direction normal to the gravity method is used to extract light stripe center of gravity. Line structured light center extraction is very helpful.