We propose a novel supervised learning technique for summarizing videos by automatically selecting keyframes or key subshots. Casting the problem as a structured prediction problem on sequential data, our main idea is to use Long Short-Term Memory (LSTM), a special type of recurrent neural networks to model the variable-range dependencies entailed in the task of video summarization. Our learning models attain the state-of-the-art results on two benchmark video datasets. Detailed analysis justifies the design of the models. In particular, we show that it is crucial to take into consideration the sequential structures in videos and model them. Besides advances in modeling techniques, we introduce techniques to address the need of a large number of annotated data for training complex learning models. There, our main idea is to exploit the existence of auxiliary annotated video datasets, albeit heterogeneous in visual styles and contents. Specifically, we show domain adaptation techniques can improve summarization by reducing the discrepancies in statistical properties across those datasets.

本文提出了一种针对视频进行自动化重点帧或子镜头选择的新型监督学习技术，其将问题视为顺序数据上的结构化预测问题，主要想法是利用LSTM（长短时记忆），该专用网络类型可模拟视频摘要任务中包含的可变范围依赖性，详细分析证明了模型设计的合理性，通过引入领域适应技术，我们还介绍了应对训练复杂学习模型所需大量注释数据需求的技术。

长短期记忆视频摘要