2023

VideoFlow: Exploiting Temporal Cues for Multi-frame Optical Flow Estimation

Shi, Xiaoyu, Huang, Zhaoyang, Bian, Weikang et al.

Understand

We introduce VideoFlow, a novel optical flow estimation framework for videos.

  • In contrast to previous methods that learn to estimate optical flow from two frames, VideoFlow concurrently estimates bi-directional optical flows for multiple frames that are available in videos by sufficiently exploiting temporal cues.
  • We first propose a TRi-frame Optical Flow (TROF) module that estimates bi-directional optical flows for the center frame in a three-frame manner.
  • The information of the frame triplet is iteratively fused onto the center frame.

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