https://blog.wongcw.com/2020/12/08/nvidia%e6%97%97%e4%b8%8bgan%e8%bf%8e%e4%be%86%e9%87%8c%e7%a8%8b%e7%a2%91%ef%bc%9a%e8%a8%93%e7%b7%b4%e6%89%80%e9%9c%80%e6%95%b8%e6%93%9a%e5%a4%a7%e5%b9%85%e6%b8%9b%e5%b0%91/