Title:

Manipulation of compressed data using MPEG-7 low level audio descriptors, Journal of Telecommunications and Information Technology, 2003, nr 2

Creator:

Harders, Nick ; Perrow, Shane ; Stirling, David ; Lukasiak, Jason

Subject and Keywords:

multimedia description ; metadata ; multimedia retrieval ; MPEG-7 ; machine learning

Description:

This paper analyses the consistency of a set of MPEG-7 low level audio descriptors when the input audio stream has previously been compressed with a lossy compression algorithm. The analysis results show that lossy compression has a detrimental effect on the integrity of practical search and retrieval schemes that utilize the low level audio descriptors. Methods are then proposed to reduce the detrimental effects of compression in searching schemes.These proposed methods include improved searches, switched adaptive scalar and vector prediction, and other prediction schemes based on machine learning principles. Of the proposed schemes the results indicate that searching which incorporates previous and future frames combined with machine learning based prediction best nullifies the effects of compression. However, future scope is identified to further improve the reliability of the MPEG-7 audio descriptors in practical search environments.

Publisher:

Instytut Łączności - Państwowy Instytut Badawczy, Warszawa

Date:

2003, nr 2

Resource Type:

artykuł

Format:

application/pdf

Resource Identifier:

ISSN 1509-4553, on-line: ISSN 1899-8852

DOI:

10.26636/jtit.2003.2.166

ISSN:

1509-4553

eISSN:

1899-8852

Source:

Journal of Telecommunications and Information Technology

Language:

ang

Rights Management:

Biblioteka Naukowa Instytutu Łączności