Learning Structured Video Descriptions: Automated Video Knowledge Extraction for Video Understanding Tasks
Daniel Vasile and Thomas Lukasiewicz
Vision to language problems, such as video annotation, or visual question answering, stand out from the perceptual video understanding tasks (e.g., classification) through their cognitive nature and their tight connection to the field of natural language processing. While most of the current solutions to vision-to-language problems are inspired from machine translation methods, aiming to directly map visual features to text, several recent results on image and video understanding have proven the importance of specifically and formally representing the semantic content of a visual scene, before reasoning over it and mapping it to natural language. This paper proposes a deep learning solution to the problem of generating structured descriptions for videos, and evaluates it on a dataset of formally annotated videos, which has been automatically generated as part of this work. The recorded results confirm the potential of the solution, indicating that it manages to describe the semantic content in a video scene with a similar accuracy to the one of state-of-the-art natural language captioning models.