。文章通过对位图边界轮廓进行合理分解，找出主要轮廓特征，得到轮廓关键特征点；并且用原始轮廓点

对特征点进行插值，不但能够很好地保留图像的原始信息特征，失真小，还能适应多种形式的圈像矢量化算法。-. Article through the boundary contour bitmap reasonable decomposition, to identify the main outline of the characteristics to be the outline of the key feature points　and the original contour points with the characteristics of points of interpolation, not only be able to retain the good image of the original features of information, distortion of small, can adapt to various forms of circle, like vectorization algorithm.