Query processing for an MPEG-7 compliant video database
Author(s)
Advisor
Ulusoy, ÖzgürDate
2008Publisher
Bilkent University
Language
English
Type
ThesisItem Usage Stats
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Abstract
Based on the recent advancements in multimedia, communication, and storage
technologies, the amount of audio-visual content stored is increased dramatically.
The need to organize and access the growing multimedia content led researchers
to develop multimedia database management systems. However, each system has
its own way of describing the multimedia content that disables interoperability
among other systems. To overcome this problem and to be able to standardize the
description of audio-visual content stored in those databases, MPEG-7 standard
has been developed by MPEG (Moving Picture Experts Group).
In this thesis, a query language and a query processor for an MPEG-7 compliant
video database system is proposed. The query processor consists of three main
modules: query parsing module, query execution module, and result fusion module.
The query parsing module parses the XML based query and divides it into subqueries.
Each sub-query is then executed with related query execution module
and the final result is obtained by fusing the results of the sub-queries according
to user defined weights. The prototype video database system BilVideo v2.0,
which is formed as a result of this thesis work, supports spatio-temporal and low
level feature queries that contain any weighted combination of keyword, temporal,
spatial, trajectory, and low level visual feature (color, shape and texture) queries.
Compatibility with MPEG-7, low-level visual query support, and weighted result
fusion feature are the major factors that highly differentiate between BilVideo
v2.0 and its predecessor, BilVideo.
Keywords
MPEG-7XML databases
Video databases
Multimedia databases
Query processing
Content-based retrieval
Video query languages