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UNIT III MULTIMEDIA SYSTEMS
DESIGN
MULTIMEDIA BASICS
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What is Multimedia?
Derived from the word “Multi” and “Media” Multi
Many, Multiple, Media
Tools that is used to represent or do a certain things, delivery medium, a form of mass communication – newspaper, magazine / tv.
Distribution tool & information presentation – text, graphic, voice, images, music and etc.
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Definition of Multimedia
Multimedia is a combination of text, graphic, sound, animation, and video that is delivered interactively to the user by electronic or digitally manipulated means.
TEXT
AUDIO
GRAPHIC
VIDEO
ANIMATION
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Definition of Multimedia
The term multimedia usually implies that at least one of text ( structured/unstructured, hypertext, etc), graphics (drawings), or image (discrete media) is associated with either audio or motion video information (continuous media).
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Elements of Multimedia
TEXTTEXT
AUDIO
GRAPHIC
VIDEO
ANIMATION
A broad term for something that contains words to express something.
Text is the most basic element of multimedia. A good choice of words could help convey the intended
message to the users (keywords). Used in contents, menus, navigational buttons
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Elements of Multimedia
TEXTTEXT
AUDIO
GRAPHIC
VIDEO
ANIMATION
Example
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Elements of Multimedia
GRAPHICTEXT
AUDIO
GRAPHIC
VIDEO
ANIMATION
Two-dimensional figure or illustration Could be produced manually (by drawing,
painting, carving, etc.) or by computer graphics technology.
Used in multimedia to show more clearly what a particular information is all about (diagrams, picture).
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Elements of Multimedia
GRAPHICTEXT
AUDIO
GRAPHIC
VIDEO
ANIMATION
Example
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Elements of Multimedia
AUDIOTEXT
AUDIO
GRAPHIC
VIDEO
ANIMATION
Produced by vibration, as perceived by the sense of hearing.
In multimedia, audio could come in the form of speech, sound effects and also music score.
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Elements of Multimedia
AUDIOTEXT
AUDIO
GRAPHIC
VIDEO
ANIMATION
Example
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Elements of Multimedia
ANIMATIONTEXT
AUDIO
GRAPHIC
VIDEO
ANIMATION
The illusion of motion created by the consecutive display of images of static elements.
In multimedia, animation is used to further enhance / enriched the experience of the user to further understand the information conveyed to them.
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Elements of Multimedia
ANIMATIONTEXT
AUDIO
GRAPHIC
VIDEO
ANIMATION
Example
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Elements of Multimedia
VIDEOTEXT
AUDIO
GRAPHIC
VIDEO
ANIMATION
Is the technology of capturing, recording, processing, transmitting, and reconstructing moving pictures.
Video is more towards photo realistic image sequence / live recording as in comparison to animation.
Video also takes a lot of storage space. So plan carefully before you are going to use it.
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Interactive Multimedia
When the user is given the option of controlling the elements.
Hyper MediaA combination of hypertext, graphics,
audio, video, (linked elements) and interactivity culminating in a complete, non-linear computer-based experience.
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Example
Interactive Multimedia
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Example
Hyper MediaMain Page
1. Video link
2. Image link
3. Audio Link
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Linear VS Non-Linear
A Multimedia Project is identified as Linear when: It is not interactive User have no control over the content that is being
showed to them. Example:
A movie A non-interactive lecture / demo show
LINEAR
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Linear VS Non-Linear
A Multimedia Project is identified as Non-Linear when: It is interactive Users have control over the content that is being showed to
them. Users are given navigational control
Example: Games Courseware Interactive CD
NON-LINEAR
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Authoring Tools
Use to merge multimedia elements (text, audio, graphic, animation, video) into a project.
Designed to manage individual multimedia elements and provide user interaction (if required).
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Authoring Tools Example:
Macromedia Authorware
Macromedia Director
Macromedia Flash
Microsoft Power Point
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Importance of Multimedia
There are a number of fields where multimedia could be of use. Examples are:- Business Education Entertainment Home Public Places
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Importance of Multimedia
Business Use and Applications
Sales / Marketing PresentationTrade show productionStaff Training ApplicationCompany Kiosk
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Importance of Multimedia
Education Use and Applications
Courseware / SimulationsE-Learning / Distance LearningInformation Searching
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Importance of Multimedia
Entertainment Use and Applications
Games (Leisure / Educational)MoviesVideo on Demand
Online
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Importance of Multimedia
Home Use and Applications
TelevisionSatellite TVSMS services (chats, voting, reality TV)
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Importance of Multimedia
Public Places Use and Applications
Information KioskSmart Cards, Security
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Multimedia Products
1. Briefing Products2. Reference Products3. Database Products4. Education and Training Products5. Kiosk6. Entertainment and Games
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Multimedia Products
Briefing Products• Small, straightforward, linear products used to present
information quickly and concisely.
• Characteristic of briefing product:
Short Development Cycle
Limited Number of Presentations
Usage of text to present information with limited use of graphic, audio and video.
Have few navigational controls. (mouse click and button press to move from one page to another)
Content and the format are suitable for the audience and fulfill the purpose of the presentation.
1/2
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Multimedia Products
Briefing Products• Good briefing presentation depends on:
The understanding of the presented subject.
Seamless integration of content.
Consistent layout
• Example:
Corporate Presentation
Sales Presentation
Educational Lectures
2/2
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Multimedia Products
Reference Products
1/2
• Often used for answering specific questions or for general browsing of information. (stored on CD/ DVD ROM)
• Characteristic of reference product:
Used by wide range of user (small – adult)
Have navigational menu, book marking, searching, printing utility
• 2 Basic classes of reference product:
Generalized Content (dictionary/encyclopedia)
Broad treatment of content at a limited depth
Detailed Content
Focus on specific area and provide extensive information.
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Multimedia Products
Reference Products• Good usability and success depends on:
The developers understanding the body of information and how the end user will want to access it.
Help function should always available to explain how to access and use the information• Examples are electronic forms of:
Encyclopedia
Dictionaries
Cookbooks, Historical, Informative
Scientific surveys.
2/2
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Multimedia Products
Reference Products• Example:
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Multimedia Products
Database Products
1/2
• Similar to reference product in a sense that large amount of information are made available to the end user.
• Focus on storing and accessing the actual data (multimedia data such as text, graphic, audio, animation and video)
• Characteristics of Database Products are:
Manages multimedia data (large data)
Descriptive finding methods
Content based search
Simultaneous access
Online database
Relational consistency in data management.
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Multimedia Products
Database Products
• Examples are:
Google Search
Google Earth
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Multimedia Products
Education and Training Products
• Similar to textbook or training manuals but have added media such as audio, animation and video.
• Make up a significant share of the multimedia market ranging from pre-kindergarten to postgraduate offerings from technical to corporate training products.
• 2 categories of reference product:
Instructor Support Products
Standalone or Self-Paced Products
Combination Products
• Shares the same characteristics as Reference Product
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Multimedia Products
Education and Training Products
• Example
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Multimedia Products
Kiosk Products
1/2
• A product which is usually stationed at public places and allow the user to find information interactively and also other types of transaction.
• Characteristics of Kiosk Products:-
Limited target users and usage.
User friendly and easily used by user.
Fast response.
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Multimedia Products
Kiosk Products
2/2
• Categories of Kiosk
Point Of Information
Provide certain information (example map, timetable etc)
Point Of Sales System
Allow users to purchase or make orders
• Example of Kiosk Products:-
Instant Photo Booth
Banking Kiosk (money deposit, cheque)
University Information Kiosk
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Multimedia Products
Entertainment & Games• Most popular
• Shipped in the form of Interactive CD / DVD ROM.
• Characteristics of E & G Products:-
Immersive.
Requires constant feedback and interaction with the user.
Challenging and sometimes intriguing for user
Enabled online play for more than one user experience.
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UNIT III MULTIMEDIA SYSTEMS
DESIGN
MULTIMEDIA ELEMENTS
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INTRODUCTION
High Impact multimedia such as presentation, Training, and Messaging Requires moving Image such as video and image animation as well as Sounds
It require dynamic handling of data consisting of a mix of text, video, voice, audio, image Animation and video components
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VARIOUS ELEMENTS OF DATA ELEMENTS
Facsimile Document images Photographic images Geographic information systems maps Audio messages Video messages Holographic images Fractals
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FACSIMLE
First practical means of transmitting data over telephone Network
Standardized at very early stage to CCITT Group 3 Compression Standards.
Run Length Encoding. Pixel density is 100 to 200 dpi(pixel/inch)
ranges High resolution are useful in enhancing the
clarity of documents that contain intricate details or very small character fonts
The basic technology,now widely used,has evolved to allow higher scanning density for better-quality fax.
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FACSIMLE
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DOCUMENT IMAGING
Document images are used for storing business documents that must be retained for long periods of time or may need to be accessed by a larger number of people.
Providing multimedia access to such documents removes the need for making several copies of the original for storage or distribution.
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PHOTOGRAPHIC IMAGES
Photographic images are used for a wide range of applications such as employee records for instant identification at a security desk,real estate systems with photographs of houses in the database containing the descriptions of houses,medical case histories,and so on.
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Geographic Information Systems Maps
Known as GIS systems; maps created in a GIS system are being used widely for natural resource and wildlife management as well as urban planning.
These systems store the graphical information of the map along with a database containing information relating high-lighted map elements with statistical or item information such as wildlife statistics or details of the floors and rooms and workers in an office building.
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VOICE COMMAND & SYNTHESIS
Voice commands and voice synthesis used for hands-free operation of a computer program.
Voice synthesis is used for presenting the results of an action to the user in a synthesized voice.
Application such as a patient monitoring system in a surgical theatre will be prime beneficiaries of these capabilities.
voice commands allow the user to direct computer operation by spoken commands.
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AUDIO MESSAGES
Annotated voice mail already uses audio or voice messages as attachments to memos and documents such as maintenance manuals.
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VIDEO MESSAGES
Video messages are being used in a similar manner to annotated voice mail.
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FULL MOTION STORED & LIVE VIDEO
Full-motion video started out as a very useful idea for on-line training and maintenance manuals.
The capability to use full-motion stored video for electronic mail or live video for presentations and video-conferencing are important evolutionary steps.
Three-dimensional video techniques are being adapted to create the concept of virtual reality.
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HOLOGRAPHIC IMAGES
All of the techniques so far essentially present a flat view of information.
Holographic images extend the concept of virtual reality by allowing the user to get "inside" a part, such as, an engine and view its operation from the inside.
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FRACTALS
Fractals started as a technology in early 1980s but has received serious attention only recently.
This technology is based on synthesizing and storing algorithms that describe the information.