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Multimedia communications EG-371Dr Matt Roach

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MPEG 7 standard. Multimedia communications EG-371 Dr Matt Roach. What is a standard ... Video segment. Audio segment. Still region. Connected component ... – PowerPoint PPT presentation

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Title: Multimedia communications EG-371Dr Matt Roach


1
Multimedia CommunicationsEG 371
  • Dr Matt Roach
  • Lecture 3
  • MPEG 7 standard

2
What is a standard
  • An agreed way of working
  • In-house / bespoke
  • Industry standards
  • International standards
  • Definitions include
  • What
  • How

3
MPEG7
  • MPEG
  • Moving Pictures expert Group
  • MPEG1, MPEG2, MPEG4, MPEG7
  • Goals and objectives
  • To address the management issues raised in
    lecture 2
  • Scope
  • Includes Standard description
  • Does not include description production or
    description consumption
  • mpeg.telecomitalialab.com/standards/mpeg-7/mpeg-7.
    htm

4
MPEG7
5
MPEG7 Multimedia DS
6
MPEG7 - Multimedia DS content description
7
Segment DS
  • Video segment
  • Audio segment
  • Still region
  • Connected component

8
Segment DS
  • Moving region
  • Spatially and temporally connected

9
Segment DS
  • Hierarchical Search
  • Tree structure
  • Inherence
  • Parent
  • child

10
Segment DS
  • Still region (SR)

11
Segment relation DS
  • Video segments
  • Graph structure
  • Nodes
  • segment
  • Edges
  • Relationship between two nodes

12
Segment relationship graph
13
Semantic DS
14
Semantic DS
15
Description definition language (DDL) adopts XML
  • XML
  • Extensible mark-up language
  • Text based descriptive language
  • Define your own tags
  • XML does not do anything
  • Example note in XML
  • ltnotegt lttogtJoe Bloblt/togt ltfromgtMary Honkeylt/fromgt
    ltheadinggtReminderlt/headinggt ltbodygtDon't forget me
    this weekend!lt/bodygt lt/notegt
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