2024-03-29T15:49:09Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00019323
2023-01-16T04:29:30Z
312:313:314
Efficient Tracking of News Topics Based on Chronological Semantic Structures in a Large-Scale News Video Archive
IDE, Ichiro
KINOSHITA, Tomoyoshi
TAKAHASHI, Tomokazu
MO, Hiroshi
KATAYAMA, Norio
SATOH, Shin'ichi
MURASE, Hiroshi
open access
Copyright (C) 2012 IEICE
news video
video archive
semantic structure
topic tracking
topic threads
Recent advance in digital storage technology has enabled us to archive a large volume of video data. Thanks to this trend, we have archived more than 1,800 hours of video data from a daily Japanese news show in the last ten years. When considering the effective use of such a large news video archive, we assumed that analysis of its chronological and semantic structure becomes important. We also consider that providing the users with the development of news topics is more important to help their understanding of current affairs, rather than providing a list of relevant news stories as in most of the current news video retrieval systems. Therefore, in this paper, we propose a structuring method for a news video archive, together with an interface that visualizes the structure, so that users could track the development of news topics according to their interest, efficiently. The proposed news video structure, namely the “topic thread structure”, is obtained as a result of an analysis of the chronological and semantic relation between news stories. Meanwhile, the proposed interface, namely “mediaWalker II”, allows users to track the development of news topics along the topic thread structure, and at the same time watch the video footage corresponding to each news story. Analyses on the topic thread structures obtained by applying the proposed method to actual news video footages revealed interesting and comprehensible relations between news topics in the real world. At the same time, analyses on their size quantified the efficiency of tracking a user's topic-of-interest based on the proposed topic thread structure. We consider this as a first step towards facilitating video authoring by users based on existing contents in a large-scale news video archive.
一般社団法人電子情報通信学会
2012-05
eng
journal article
VoR
http://hdl.handle.net/2237/21415
https://nagoya.repo.nii.ac.jp/records/19323
http://www.ieice.org/jpn/trans_online/index.html
0916-8532
IEICE transactions on information and systems
95-D
5
1288
1300
https://nagoya.repo.nii.ac.jp/record/19323/files/e95-d_5_1288.pdf
application/pdf
2.5 MB
2018-02-21