Keyframe-based Video Summarization with Human in the Loop

Antti E. Ainasoja, Antti Hietanen, Jukka Lankinen, Joni-Kristian Kämäräinen

2018

Abstract

In this work, we focus on the popular keyframe-based approach for video summarization. Keyframes represent important and diverse content of an input video and a summary is generated by temporally expanding the keyframes to key shots which are merged to a continuous dynamic video summary. In our approach, keyframes are selected from scenes that represent semantically similar content. For scene detection, we propose a simple yet effective dynamic extension of a video Bag-of-Words (BoW) method which provides over segmentation (high recall) for keyframe selection. For keyframe selection, we investigate two effective approaches: local region descriptors (visual content) and optical flow descriptors (motion content). We provide several interesting findings. 1) While scenes (visually similar content) can be effectively detected by region descriptors, optical flow (motion changes) provides better keyframes. 2) However, the suitable parameters of the motion descriptor based keyframe selection vary from one video to another and average performances remain low. To avoid more complex processing, we introduce a human-in-the-loop step where user selects keyframes produced by the three best methods. 3) Our human assisted and learning-free method achieves superior accuracy to learning-based methods and for many videos is on par with average human accuracy.

Paper Citation

in Harvard Style

Ainasoja A., Hietanen A., Lankinen J. and Kämäräinen J. (2018). Keyframe-based Video Summarization with Human in the Loop. In Proceedings of the 13th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISIGRAPP 2018) - Volume 4: VISAPP; ISBN 978-989-758-290-5, SciTePress, pages 287-296. DOI: 10.5220/0006619202870296

in Bibtex Style

@conference{visapp18,
author={Antti E. Ainasoja and Antti Hietanen and Jukka Lankinen and Joni-Kristian Kämäräinen},
title={Keyframe-based Video Summarization with Human in the Loop},
booktitle={Proceedings of the 13th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISIGRAPP 2018) - Volume 4: VISAPP},
year={2018},
pages={287-296},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0006619202870296},
isbn={978-989-758-290-5},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 13th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISIGRAPP 2018) - Volume 4: VISAPP
TI - Keyframe-based Video Summarization with Human in the Loop
SN - 978-989-758-290-5
AU - Ainasoja A.
AU - Hietanen A.
AU - Lankinen J.
AU - Kämäräinen J.
PY - 2018
SP - 287
EP - 296
DO - 10.5220/0006619202870296
PB - SciTePress