Scientific and Technical Journal

ELECTROTECHNIC AND COMPUTER SYSTEMS

ISSN Print 2221-3937
ISSN Online 2221-3805
ONTOLOGY AND BAYESIAN NETWORK BASED AUTOMATIC VIDEO ANNOTATION
Abstract:
In the last decades the amounts of video information increased to such an extent as to make its cataloguing and processing, as well as search and retrieval, as very important and challenging task. Automatic video annotation, i.e. the semantic description of video content, allows solving this task.
In this paper we present an approach for automatic video annotation, based on the ontology, which is created by an expert manually and is used to account for the domain semantics, as well as a Bayesian network, which is built on the base of that ontology and is used to recognize events and situations in video.
We conduct a brief overview and analysis of the existing methods of Bayesian network structure learning and rationalize the necessity to develop a new approach to create the most efficient network structure. The proposed approach uses the branch-and-bound algorithm, which guarantees finding the most optimal network structure at the point of the algorithm’s termination, and structural constraints, that reduce the search space of the possible network structures and reduce the computational costs.
In this paper a network structure is deemed to be most optimal if it has the highest score function value. We use the Bayesian Dirichlet metric as a score function.
The efficiency of the proposed approach is tested in a video annotation information system, using the CAVIAR test video dataset.
Authors:
Keywords
DOI
10.15276/etks.18.94.2015.15
References
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Published:
Last download:
2017-11-16 11:39:43

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