Video Infringement Detection via Feature Disentanglement and Mutual
  Information Maximization
Zhenguang Liu Xinyang Yu Ruili Wang Shuai Ye Zhe Ma Jianfeng Dong Sifeng He Feng Qian Xiaobo Zhang Roger Zimmermann Lei Yang
The self-media era provides us tremendous high quality videos. Unfortunately,
frequent video copyright infringements are now seriously damaging the interests
and enthusiasm of video creators. Identifying infringing videos is therefore a
compelling task. Current state-of-the-art methods tend to simply feed
high-dimensional mixed video features into deep neural networks and count on
the networks to extract useful representations. Despite its simplicity, this
paradigm heavily relies on the original entangled features and lacks
constraints guaranteeing that useful task-relevant semantics are extracted from
the features.
  In this paper, we seek to tackle the above challenges from two aspects: (1)
We propose to disentangle an original high-dimensional feature into multiple
sub-features, explicitly disentangling the feature into exclusive
lower-dimensional components. We expect the sub-features to encode
non-overlapping semantics of the original feature and remove redundant
information.
  (2) On top of the disentangled sub-features, we further learn an auxiliary
feature to enhance the sub-features. We theoretically analyzed the mutual
information between the label and the disentangled features, arriving at a loss
that maximizes the extraction of task-relevant information from the original
feature.
  Extensive experiments on two large-scale benchmark datasets (i.e., SVD and
VCSL) demonstrate that our method achieves 90.1% TOP-100 mAP on the large-scale
SVD dataset and also sets the new state-of-the-art on the VCSL benchmark
dataset. Our code and model have been released at
https://github.com/yyyooooo/DMI/, hoping to contribute to the community.