Improve jacquard image vectorization method, based on character of jacquard image, use Chain-Code-Method to trace the outline of every color block and use beeline and curve method to fit the outline.

• 改进了纹织图像矢量化的方法,根据纹织图像的特点,利用链码法对纹织图像中的各个色块进行轮廓跟踪,利用直线与曲线相结合的方法进行拟合。