Attention is all you need for Videos: Self-attention based Video Summarization using Universal Transformers
Authors: Manjot Bilkhu, Siyang Wang, Tushar Dobhal
AI-generated Key Points
- Video Captioning and Summarization have gained popularity due to advancements in Sequence Modeling techniques
- Long-Short Term Memory networks (LSTMs) and Gated Recurrent Units (GRUs) are commonly used for modeling dependencies
- Convolutional Neural Networks (CNNs) are used for extracting spatio-temporal features
- Soft attention layers are incorporated with GRUs or LSTMs to improve performance
- Transformer model has revolutionized Sequence Modeling by incorporating self-attention mechanisms
- This project focuses on implementing a Transformer-based model with 3D CNN architectures for video feature extraction
- Dimensionality reduction techniques are applied to manage the overall size of the model
- Experiments on MSVD and ActivityNet datasets show effectiveness in Single and Dense video captioning scenarios.
Abstract: Video Captioning and Summarization have become very popular in the recent years due to advancements in Sequence Modelling, with the resurgence of Long-Short Term Memory networks (LSTMs) and introduction of Gated Recurrent Units (GRUs). Existing architectures extract spatio-temporal features using CNNs and utilize either GRUs or LSTMs to model dependencies with soft attention layers. These attention layers do help in attending to the most prominent features and improve upon the recurrent units, however, these models suffer from the inherent drawbacks of the recurrent units themselves. The introduction of the Transformer model has driven the Sequence Modelling field into a new direction. In this project, we implement a Transformer-based model for Video captioning, utilizing 3D CNN architectures like C3D and Two-stream I3D for video extraction. We also apply certain dimensionality reduction techniques so as to keep the overall size of the model within limits. We finally present our results on the MSVD and ActivityNet datasets for Single and Dense video captioning tasks respectively.
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