what does warped optical flow mean?

[Qinying-Liu]

Hello, thanks for your codes.
Can you explain 'warped optical flow' for me? Because I really cannot understand what it means although I have seen it several times.
Any help will be appreciated.
（你好，你能解释一下warped光流图是什么意思吗？虽然我已经看过这个词好几次，但是一直不理解什么意思，所以很困惑，我对光流大概地了解，主要是warped的意思不理解）