Fortunately, there are techniques that are able to guess what happens in these intermediate frames and give them to us.

幸运的是，有一些技术能够猜测在这些中间帧中发生了什么，并将它们提供给我们。

Of course, to validate this algorithm, we also need to have access to a ground truth reference to compare against — we can accomplish this by withholding some information about a few intermediate frames.

当然，为了验证这个算法，我们也需要获得一个基本事实与之进行比较——我们可以通过保留一些关于部分中间画面的信息来实现这一点。