Ontology-enriched semantic space for video search

XY Wei, CW Ngo - Proceedings of the 15th ACM international …, 2007 - dl.acm.org
Multimedia-based ontology construction and reasoning have recently been recognized as
two important issues in video search, particularly for bridging semantic gap. The lack of …

Selection of concept detectors for video search by ontology-enriched semantic spaces

XY Wei, CW Ngo, YG Jiang - IEEE Transactions on Multimedia, 2008 - ieeexplore.ieee.org
This paper describes the construction and utilization of two novel semantic spaces, namely
ontology-enriched semantic space (OSS) and ontology-enriched orthogonal semantic space …

Concept-driven multi-modality fusion for video search

XY Wei, YG Jiang, CW Ngo - … on Circuits and Systems for Video …, 2011 - ieeexplore.ieee.org
As it is true for human perception that we gather information from different sources in natural
and multi-modality forms, learning from multi-modalities has become an effective scheme for …

Semantic context transfer across heterogeneous sources for domain adaptive video search

YG Jiang, CW Ngo, SF Chang - Proceedings of the 17th ACM …, 2009 - dl.acm.org
Automatic video search based on semantic concept detectors has recently received
significant attention. Since the number of available detectors is much smaller than the size of …

Fusing semantics, observability, reliability and diversity of concept detectors for video search

XY Wei, CW Ngo - Proceedings of the 16th ACM international …, 2008 - dl.acm.org
Effective utilization of semantic concept detectors for large-scale video search has recently
become a topic of intensive studies. One of main challenges is the selection and fusion of …

[HTML][HTML] Leveraging visual concepts and query performance prediction for semantic-theme-based video retrieval

S Rudinac, M Larson, A Hanjalic - International Journal of Multimedia …, 2012 - Springer
In this paper, we present a novel approach that utilizes noisy shot-level visual concept
detection to improve text-based video retrieval. As opposed to most of the related work in the …

Interpretable embedding for ad-hoc video search

J Wu, CW Ngo - Proceedings of the 28th ACM International Conference …, 2020 - dl.acm.org
Answering query with semantic concepts has long been the mainstream approach for video
search. Until recently, its performance is surpassed by concept-free approach, which …

Query and keyframe representations for ad-hoc video search

F Markatopoulou, D Galanopoulos, V Mezaris… - Proceedings of the …, 2017 - dl.acm.org
This paper presents a fully-automatic method that combines video concept detection and
textual query analysis in order to solve the problem of ad-hoc video search. We present a set …

Video search in concept subspace: A text-like paradigm

X Li, D Wang, J Li, B Zhang - Proceedings of the 6th ACM international …, 2007 - dl.acm.org
Though both quantity and quality of semantic concept detection in video are continuously
improving, it still remains unclear how to exploit these detected concepts as semantic …

Building a comprehensive ontology to refine video concept detection

ZJ Zha, T Mei, Z Wang, XS Hua - Proceedings of the international …, 2007 - dl.acm.org
Recent research has discovered that leveraging ontology is an effective way to facilitate
semantic video concept detection. As an explicit knowledge representation, a formal …