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31. Multimedia System

31. Multimedia System






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  • Refer to text page 121, Figure 4-1-1
  • Business field Personal Digital Assistants (PDAs) and notebook PCs are equipped with communication functions, mobile computing -> information exchange with computer network of one’s company or Internet thru public telephones or cellular phones In multimedia systems, conferences can be performed while watching the face of the perform(s) one is speaking to, and animated images and other information can be handled. Medical care field Enabling patients for who, it is difficult to go to the hospital or staying a distance away from the hospital to be diagnosed while watching the computer display screen enabling patients of small scale clinics located in remote places to receive medical treatment of the same level as that at general hospital (using patients’ personal information and medical records, radiographs, etc.) Publication field CD-ROM comes with books (compare to conventional-based books, which are only character-based information) Education field Multimedia is used to present research results, exchange opinions, etc. Provide image information on display devices as well as audio information CAI (Computer Aided Instruction) Game field VR (Virtual Reality) VR imitates the real world on the computer display, through comprehensive use of 3-D graphics and 3-D (surround) sounds Interface technology GUI (Graphical User Interface) is used as a multimedia system interface (icons) Software production technology Application software (programs) that handles multimedia is called multimedia title characters, numeral text data, multiple audiovisual data such as still images, animated images, audio, etc is handled tools (authoring tool) to create multimedia titles for enabling easy manipulation of multimedia data are necessary authoring tools are widely used today for production of multimedia titles
  • Hardware – Text Page 123 (Figure 4-1-3)
  • Reading 3
  • Explaining of the actual implementation of multimedia
  • beside characters, voice and images are also handled as digital data The technology used to search for voice and image data in an existing matching pattern is called pattern recognition pho·neme (f n m ) n. The smallest phonetic unit in a language that is capable of conveying a distinction in meaning, as the m of mat and the b of bat in English.
  • Provided by television stations Images are edited as digital data on the computer A service consisting of the distribution of video images at user’s request Spread from disaster monitoring systems, to TV games, and other daily life uses

31. Multimedia System 31. Multimedia System Presentation Transcript

  • Multimedia System Text No. 1 Chapter 4
  • What is Multimedia?
    • Multimedia is a medium that includes the following four factors:
      • Digitisation
        • Of audio, images and other information besides characters and numeric values, high-quality and easy-to-process information can be integrated and used.
      • Networking
        • Through the interconnection of computers using communication lines such as optical fiber, large amounts of information can be exchanged accurately at high speed.
      • Interactivity
        • As with the telephone, bi-directional interactive processing with a high response level can be performed.
      • Inclusion of human interfaces
        • Diverse types of information can be naturally and easily handled.
  • Multimedia
  • Multimedia
    • Multimedia technology is not a single technology, but rather a collection of technologies for manipulating
      • Text (characters, digits, symbols)
      • Graphics (including images and animation)
      • Audio
      • Video
  • TEXT
    • Characters that are used to create words, sentences, and paragraphs, is a fundamental element used in many multimedia applications.
    • Different text sizes, fonts, colour or styles may be used to emphasis the text.
    • A graphic, or graphic image or still graphical image, such as drawing, chart, or photograph.
    • Displays a series of still graphics in sequence to give the look of movement.
    • Music, Speech, or any other sound.
    • Photographic images played at speeds of 15 to 30 frames per second (RM, MPEG, AVI, ASF, DVIX formats)
    • Interactive Multimedia is a multimedia application that accepts input from the user by means of the keyboard or pointing device such as a mouse, and performs some action in response
      • interactive links
      • Amazon.com
      • Microsoft
      • USQ
  • Multimedia Services
    • The services provided to the users of multimedia systems
    • Application examples of multimedia service
      • Business field
      • Medical care field
      • Publication field
      • Education field
      • Game field
      • Interface technology
      • Software production technology
  • Multimedia Education
  • Multimedia Entertainment
  • Multimedia Platform
    • Hardware
      • Display device
      • Image scanner
      • Video equipment
      • Audio equipment
      • Digital sound equipment
      • Pointing device
      • Storage medium
      • Modem
  • Multimedia Platform
    • Operating System
      • GUI adoption
      • Multi-task implementation
      • Provision of network functions
      • Provision of multimedia functions
  • Multimedia Platform
    • Creation of multimedia titles
      • Editing software
      • Image
        • Still image
        • Animated image
      • Audio
      • Graphics
      • Authoring tools
        • Graphics drawing and editing
        • Graphics painting and editing
        • Image tools
        • Audio/video tools
      • HyperText
        • Browser UI technology is based on HyperText standards
  • Multimedia Technology
    • Artificial Intelligence (AI)
    • Pattern recognition (OCR)
    • Artificial Reality/Virtual Reality/ Computer Graphics (AR/VR/CG)
    • Agent (knowledge base)
  • Agents/Bots
  • Multimedia Applications
  • Pattern recognition
    • Voice pattern recognition
      • Phoneme recognition processing – voice recognition, user-voice analysis
      • Word recognition processing – online dictionary look-ups
      • Language processing – ‘meanings’ attached to tone, diction, volume
      • AI technology to exclude ‘dog words’
    • Image pattern recognition (OCR)
      • Image input processing
      • Image recognition preparation processing
        • Noise elimination, data emphasis, colour adjustment
      • Characteristics extraction processing
        • Text versus graphics
        • Language
      • Partial recognition processing
        • Candidate extraction
      • Total recognition processing
        • Candidate confirmation
  • Synthesis of voice and image
    • Technology to create (synthesize) voices and images
    • Voice synthesis technology
      • Editing method (edits recorded voices and creates specified documents or conversations – disharmony sometimes apparent)
      • Analysis method (analyse, encode and store as information, then stored – household appliances, elevators)
      • Rule-based method (analyse and establish rules of patterns – change base tones)
    • Image synthesis method
      • Creation of the original picture (geometric representation, wire frame model, surface model)
      • Shape change (correction in 3-dimensions)
      • Image display (display in 3-dimensions, light source, shading, filtering and other adjustments)
  • Multimedia Application System
    • Internet broadcasting
    • Nonlinear image edit system
      • Video tape editing – linear editing
      • Softcopy editing – non-linear, data compression, previews
    • Video-on-demand
      • Full control of viewing on-the-fly (personalised viewing), not just channel switching
    • Other application systems
  • Benefits of Multimedia
    • Easy to understand and easy to use
    • Integrated and interactive
    • Conducive to cooperative work environment
    • Flexible
    • Supportive of large audience
  • IT Education and Multimedia
  • Congratulations!