2021

TrackFormer: Multi-Object Tracking with Transformers

Meinhardt, Tim, Kirillov, Alexander, Leal-Taixe, Laura et al.

Understand

The challenging task of multi-object tracking (MOT) requires simultaneous reasoning about track initialization, identity, and spatio-temporal trajectories.

  • We formulate this task as a frame-to-frame set prediction problem and introduce TrackFormer, an end-to-end trainable MOT approach based on an encoder-decoder Transformer architecture.
  • Our model achieves data association between frames via attention by evolving a set of track predictions through a video sequence.
  • The Transformer decoder initializes new tracks from static object queries and autoregressively follows existing tracks in space and time with the conceptually new and identity preserving track queries.

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