The purpose of this paper is to provide a series of digital image processing method for the JPG file format transformed to PLT one , which meets present requirement of laser marking for vector graphics.

• 目前激光标刻的矢量图形PLT文件大都依靠AutoCAD获得,本文利用数字图像处理技术给出了一种将JPG 图像转换为PLT 矢量文件或AutoCAD 交换文件格式DXF 文件的方法。