Papers › Spatiotemporal Multiplier Networks for Video Action Recognition

Spatiotemporal Multiplier Networks for Video Action Recognition

1 Jul 2017CVPR 2017 7archive 2025-07-28

Christoph Feichtenhofer, Axel Pinz, Richard P. Wildes

This paper presents a general ConvNet architecture for video action recognition based on multiplicative interactions of spacetime features. Our model combines the appearance and motion pathways of a two-stream architecture by motion gating and is trained end-to-end. We theoretically motivate multiplicative gating functions for residual networks and empirically study their effect on classification accuracy. To capture long-term dependencies we inject identity mapping kernels for learning temporal relationships. Our architecture is fully convolutional in spacetime and able to evaluate a video in a single forward pass. Empirical investigation reveals that our model produces state-of-the-art results on two standard action recognition datasets.

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