Comparing Learning Paradigms for Egocentric Video Summarization

TL;DR

This paper compares different learning paradigms for egocentric video summarization, revealing that prompt fine-tuning of GPT-4o outperforms specialized models, but highlights the need for further advancements in first-person video understanding.

Contribution

It provides a comparative analysis of supervised, unsupervised, and prompt fine-tuning approaches for egocentric video summarization, demonstrating the potential of prompt-based models in this domain.

Findings

Prompt fine-tuned GPT-4o outperforms specialized models.

State-of-the-art models perform less effectively on first-person videos.

Evaluation conducted on a small subset of egocentric videos.

Abstract

In this study, we investigate various computer vision paradigms - supervised learning, unsupervised learning, and prompt fine-tuning - by assessing their ability to understand and interpret egocentric video data. Specifically, we examine Shotluck Holmes (state-of-the-art supervised learning), TAC-SUM (state-of-the-art unsupervised learning), and GPT-4o (a prompt fine-tuned pre-trained model), evaluating their effectiveness in video summarization. Our results demonstrate that current state-of-the-art models perform less effectively on first-person videos compared to third-person videos, highlighting the need for further advancements in the egocentric video domain. Notably, a prompt fine-tuned general-purpose GPT-4o model outperforms these specialized models, emphasizing the limitations of existing approaches in adapting to the unique challenges of first-person perspectives. Although our evaluation is conducted on a small subset of egocentric videos from the Ego-Exo4D dataset due to resource constraints, the primary objective of this research is to provide a comprehensive proof-of-concept analysis aimed at advancing the application of computer vision techniques to first-person videos. By exploring novel methodologies and evaluating their potential, we aim to contribute to the ongoing development of models capable of effectively processing and interpreting egocentric perspectives.