MPEG-7: Multimedia Content Description interface

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Standardize content-based description for various types of audiovisual .... Content description. Content management. Creation & production. Media. Content.
Introduction to MPEG-21 workshop 20th & 21st of March 2000

MPEG-7: Multimedia Content Description interface Philippe Salembier Olivier Avaro Universitat Politècnica de Catalunya France Telecom [email protected] [email protected]

Outline

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Goals and scope of MPEG-7 MPEG-7 Tools and Architecture MPEG-7 and MPEG-21 Conclusions

Objective of MPEG-7 n

Standardize content-based description for various types of audiovisual information allow quick and efficient content localization u address a wide range of applications ⇒ For some applications: need to go beyond the pure content description, e.g, user preferences u

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Types of audiovisual information: Audio, speech u Moving video, still pictures, graphics, 3D models u Information on how objects are combined in scenes u

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Descriptions independent of the media support Existing solutions for textual content or description

Example of application areas n

Storage and retrieval of audiovisual databases

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Broadcast media selection (Radio, TV programs)

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Personalized news service on Internet (push media filtering)

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Tele-shopping

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Intelligent multimedia presentations

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Educational applications

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Surveillance and remote sensing

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Bio-medical applications

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etc.

Scope of MPEG-7 Description Description generation generation

Description Description

Research and future competition n



Description Description consumption consumption

Scope of MPEG-7

The description generation (feature extraction, indexing process, etc.) and consumption (search engine, retrieval process, etc.) are not a normative part of MPEG-7 Just the description is normative

Workplan Competition: • Individual work • Definition of the scope and requ

1996

1998

Call Call for for proposals proposals

Collaboration: • Common work • Core experiments • eXperimentation Model • Requirements

1999

Working Working draft draft

2000

Committee Committee draft draft Final Final committee committee draft draft

2001

International International standard standard Draft Draft international international standard standard

Description n

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Information about the content: recording date & conditions, title, author, copyright, coding format, classification, etc. Information present in the content: Combination of low level and high level descriptors u

High level description: F F

Efficient and powerful Lack of flexibility

Indexing Indexing Feature Feature extrac extrac

Efficiency

Recognition process of high level info.

u

Low level description F F

Generic and flexible Intelligent / efficient search engine

Search Search Retrieval Retrieval Recognition process of low level info.

No restriction on the search

Outline

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Goals and scope of MPEG-7 MPEG-7 Tools and Architecture MPEG-7 and MPEG-21 Conclusions

Current MPEG-7 working areas Description Definition ⇒ extension Language Definition Tags

DS1 D2 D7

DS2

Instantiation

D1 D3

D6 D10

D1

D4 D9

D8

D5

D2

Structuring D6

DS4

D3

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