令我惊讶的是，potrace原来只能处理黑色和白色。对于您的用例来说，这可能没问题，但有些人可能会认为缺乏颜色追踪是有问题的。

就我个人而言，我对 向量的魔法

但它仍然不完美。

I'm assuming that you wish to write software to do this. To do it naively you would just find lines and set the vectors. To do it intelligently, you attempt to fit shapes onto the drawing (model fitting). Additionally, you should attempt to ascertain bitmaped regions (regions you can't model through shames or applying textures. I would not recommend going this route as that it will take quite a bit of time and require a bit of graphics and computer vision knowledge. However, the output will much and scale much better than your original output.

有一个网站，你可以上传你的图片，并看到结果。

http://vectormagic.com/home

但是如果你想下载你的svg-image，你需要注册。 (注册即可免费获得2张图片)

你也可以试试http://image.online-convert.com/convert-to-svg

我总是用它来满足我的需要。

用adobe illustrator:

打开Adobe Illustrator。点击“文件”，选择“打开”，将. png文件加载到程序中。在将图像保存为. svg文件之前，根据需要编辑图像。点击“文件”并选择“另存为”。创建新文件名或使用现有名称。确保选择的文件类型是SVG。选择一个目录，点击“保存”保存文件。

or

在线转换器 http://image.online-convert.com/convert-to-svg

我更喜欢人工智能，因为你可以做出任何需要的改变

祝你好运

http://online-converting.com/image/convert-to-svg/可以很好地转换为SVG