Paper Info
Title
An Evaluation of Existing Metadata Compression and Encoding Technologies for MPEG-21 Applications
Abstract
XML-based metadata for digital media is becoming increasingly important, as a consequence also calling for efficient encoding and compression schemes for the storage and transport of this metadata. Moreover, support for streaming the XML metadata in conjunction with the media data is highly desirable. Such support is provided, for instance, by MPEG's Binary Format for Metadata (BiM) encoding approach, which facilitates fragmenting, delivering, and accessing the metadata in so-called Access Units (AUs). In this paper, we present a quantitative evaluation of existing XML metadata compression and encoding techniques, reaching from widely used state-ofthe- art data compression algorithms to sophisticated XML-aware encoding schemes. The comparison is based on compressing MPEG-21 generic Bitstream Syntax Descriptions (gBSDs) which can grow to non-negligible sizes. The main conclusion from this investigation is that in terms of pure compression efficiency on XML files, the BiM approach (exemplified by the MPEG reference software as well as a commercial version thereof) is comparable - in terms of performance - with traditional data or specific XML compression tools. However, when XML metadata have to be fragmented, compressed, and streamed in such fragments, the results indicate that the BiM approach is superior to the other schemes.
Year
DOI
Venue
2005
10.1109/ISM.2005.31
ISM
Keywords
Field
DocType
metadata compression,mpeg-21 applications,xml file,xml-based metadata,pure compression efficiency,bim approach,efficient encoding,specific xml compression tool,encoding technologies,xml metadata compression,art data compression algorithm,xml metadata,compression scheme,meta data,digital media,xml,data compression
Metadata repository,Metadata,XML Encryption,Efficient XML Interchange,Streaming XML,Information retrieval,XML validation,Data element,Computer science,Fast Infoset,Database
Conference
ISBN
Citations 
PageRank 
0-7695-2489-3
5
0.54
References 
Authors
10
4
Name
Order
Citations
PageRank
Christian Timmerer11111108.97
Ingo Kofler215319.73
Johannes Liegl3141.49
Hermann Hellwagner41114134.97