Potrace是一个位图图片的优化工具，它可以使其成为平滑，可自由缩放的图片。它输入的格式可以是PBM, PGM, PPM, 和 BMP 格式，默认的输出格式是EPS文件，它可以用于将公司的徽标和文件的扫描图片的锯齿消除，以任何分辨率显示出来。它的输出格式有： EPS, Postscr ipt, PDF, SVG , Xfig, Gimppath, 和PGM . -Potrace is a bitmap image optimization tools, which can make it sm

implementing postscr ipt rendering in HW-implementing postscr ipt rendering in HW

Cairo is a 2D graphics library with support for multiple output devices. Currently supported output targets include the X Window System, Quartz, Win32, image buffers, Postscr ipt, PDF, and SVG file output. Experimental backends include OpenGL (throug