您将需要运行外部程序来进行图像跟踪.一个流行的程序是potrace.这就是Inkscape用于执行任务的东西.

You will need to run an external program to do the image tracing. A popular program is potrace. It is what Inkscape uses to perform the task.

有一些python绑定:

There are some python bindings for it:

https://pypi.python.org/pypi/pypotrace