About Optical Flow

[BruceWang1996]

First frame doesn't have optical flow picture, how to deal with this?

[crescentxu]

The folder 3rdparty/pytorch-pwc is empty, how did you generate optical flow?

[Tianfei Zhou]

@hailyxu Please refer to prepare-optical-flow in readme for how to run optical flow for your data.

[Tianfei Zhou]

@BruceWang1996 Actually, we don't have optical flow for the last frame. In our experiments, we simply ignore the last frame, which also follows the standard protocol in DAVIS.

[crescentxu]

@hailyxu Please refer to prepare-optical-flow in readme for how to run optical flow for your data.

Thanks for your reply. I have checked the folder 3rdparty/pytorch-pwc, but it's empty, there's no run_davis2017.py in it. I have also go to the original pytorch-pwc repo, but apparently, the code could only produce the optical flow of two frames once.
I would apprecirate it if you could offer some help about optical flow, it's really time comsuming if I go to find other models that produce optical flow results.

[Tianfei Zhou]

@hailyxu I have updated the optical flow helper scripts in the 3rdparty. Please update it or refer to the commit 7a996c1.

[crescentxu]

@hailyxu I have updated the optical flow helper scripts in the 3rdparty. Please update it or refer to the commit 7a996c1.

Thanks. Good day.