MULTIMEDIA SYSTEM DEVELOPMENT

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• MULTIMEDIA SYSTEM DEVELOPMENT
• Multimedia Systems

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The Concept

• 50 years ago, Vannevar Bush (advisor President
  Roosevelt)
• Individual stores his books, records and
  communications and which is mechanised so that it
  may be consulted with exceeding speed and
  flexibility. It is an enlarged intimate
  supplement to his memory
• Innovative proposition forms the fundamental
  theoretical background for present-day
  interactive multimedia systems.

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Multimedia

• Multimedia is the seamless integration of text,
  sound, images of all kinds and control software
  within a single digital information environment
  Tony Feldman, Multimedia Consultant
• The implementation of multimedia capabilities
  in computers is just the latest episode in a long
  series cave painting, hand-crafted manuscripts,
  the printing press, radio and televisionThese
  advances reflect the innate desire of man to
  create outlets for creative expression, to use
  technology and imagination to gain empowerment
  and freedom of ideas Glen Ochsenreiter,
  Director Multimedia PC Council
• Defining multimedia reminds me of an ancient
  proverb about three blind men, each encountering
  an elephant for the first time. One, touching the
  tail, said it was like a rope. Another, embracing
  the beasts leg, described it as a tree. The
  third, holding the elephants trunk, likened it
  to a snake. Multimedia can appear to be different
  things, depending on whom you ask Jeff Burger,
  NewMedia Magazine

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Multimedia - definition

• The presentation of a computer application,
  usually interactive, that incorporates media
  elements such as text, graphics, video,
  animation, and sound on a computer. Multimedia
  melds the sensory power of television with the
  data manipulation and interactive powers of
  computer.
• A multimedia system is characterized by
  computer-controlled, integrated production,
  manipulation,presentation, storage and
  communication of independent information,which is
  encoded at least through continuous
  (time-dependent) and a discrete
  (time-independent) medium.

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Media

• A means to distribute and represent information
  (text, graphics, pictures, voice, sound and
  music)
• Perception Media (How do humans perceive
  information)
• What we see and what we hear
• Representation Media (How is information encoded
  in the computer)
• Text ASCII, image JPEG, audio PCM
• Presentation Media (Input/Output Information)
• Keyboards, cameras, mouse, microphones, monitors,
  speakers
• Storage Media (Where is information stored)
• CD, disk
• Transmission Media (Which medium is used to
  transfer data)
• Cables, satellite

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Interaction

• Thought
• Something that you do to yourself internal
  process (mental state)
• Action
• Something you do to an object in the world. The
  effect is that something in the world has
  changed. E.g. pressing key, clicking mouse
  button
• Interaction
• Involves the participant in going outside the
  individual. Two way process. E.g. give a query
  to search engine which can return an outcome of
  my search.
• Complex task
• 2 types
• Physical interaction and
• Communicative interaction

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Interaction

• Physical Interaction
• E.g. You hit me, I hit you.
• Communicative Interaction
• Occur between 2 agents

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Interactive Multimedia (IMM)

• Multimedia Interaction
• How do we get user involvement in our multimedia
  product?
• Input/Output devices
• User friendly Interface
• Study of Human Computer Interaction (HCI),
  ergonomics

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Hypermedia

• Hypermedia is a way of organising multimedia
  information by linking media elements.
• Hypermedia has grown out of a fusion between
  hypertext and multimedia.
• Hypertext was developed to provide a different
  structure for basic text in computer systems
• text is essentially sequential in nature, even
  though its structure is hierarchical (chapters,
  sections, subsections, paragraphs)
• hypertext was developed to permit more random
  access between components of text documents, or
  between documents, to allow a greater degree of
  flexibility and cross-referencing than a purely
  linear or sequential model would allow.

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Hypermedia - continue
Chap.1
Chap.2
Chap.3
Chap.4
Chap.5
Chap.6
A sequential text
Chap.3
Chap.1
Chap.5
Chap.2
Chap.6
Chap.4
A linked, self-referencing text
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Hypermedia - continue

• The structure of a hypermedia organisations is
  called a hypermedia web, which consists of a
  number of multimedia elements or nodes with links
  between them.
• Links represent semantic relationships, thus when
  a link exists between two nodes they must be
  related in some fashion
• a digital image linked to a textual description
  of it
• a slide-show linked to an audio commentary
• Most widely used hypermedia tools are hypermedia
  browsers, which let users view nodes and traverse
  links between them, and markup languages, such as
  HTML, which allow users to create hypermedia webs
  as structured documents.

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Hypermedia - continue
Image Node
Text Node
Audio Node
A Simple Hypermedia Web
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Application Areas for IMM

• Education
• Computer Aided Learning (CAL)
• Training
• Using Multimedia 40 more effective (study by US
  DoD)
• Point of Sales
• Kiosk
• News Delivery, Broadcasting and Advertising
• WWW, Web TV
• Commerce and Business Applications
• Amazon.com (first on-line bookstore recorded 230
  increase in their profit)