Lec1 2 introduction to Multimedia #Jamil

1. INTERACTIVE
MULTIMEDIA SYSTEMS
INTRODUCTION TO MULTIMEDIA

2. MULTIMEDIA
• Multimedia is one of the most fascinating and fastest
growing areas in the field of information technology.
Text, pictures, animation, movies and sound - all
these varied media are seamlessly blended, resulting
in simple slide shows to dazzling, interactive
presentations.
• Before the advent of computers, multimedia projects
were difficult to put together. Computers enable to
combine the media and also store the results for
reuse.

3. What is Interactive
Multimedia?
• Generally, multimedia is the presentation (usually
by computer) of information through many forms of
media.
• The term is used in contrast to media which only
use traditional forms of printed or hand-produced
material.
• Content, such as pictures, sound effects, music,
animation, video, and so on are organized and
directed by a program to produce a specific
experience for the user. Multimedia today is mostly
non-linear.

4. • Multimedia is usually recorded and played,
displayed or accessed by information content
processing devices, such as computerized and
electronic devices, but it can also be part of a
live performance.
• Any Examples?

5. LINEAR & NON-LINEAR
MULTIMEDIA
• Multimedia may be broadly divided into linear
and non-linear categories.
• Linear active content progresses without any
navigational control for the viewer such as a
cinema presentation.
• Non-linear content offers user interactivity to
control progress as used with a computer game.

6. LINEAR MULTIMEDIA:
• The two main types of linear multimedia are movie
presentations, such as pre-recorded instructional videos
or movies recorded for entertainment purpose being
broadcast on standard TV or cinema, and printed books
and magazines.
• Live video feeds can also be considered linear
multimedia because the viewer has no ability to speed up
or slow down the presentation or skip to different
segments. E.g. Live cricket or football matches.
Any other Examples?

7. NON-LINEAR MULTIMEDIA
• Nonlinear interactive multimedia combine the same
technologies as linear ones, but with a twist. The
viewer is hands-on, controlling what is viewed.
• Multimedia ceases to be classified as linear when any
interactive elements at all are introduced, such as the
ability to skip to different chapters in a DVD, rewind
or fast-forward in a video, move a character in a
game, or navigate to different sections of a website.

8. DIGITAL MEDIA
1. Pictures
2. Sound and Music files
3. Video Files
4. Animation
5. Text (including hypertext)
6. Virtual Reality
7. Haptics

9. PICTURES
• Pictures or images are an important component
of any multimedia project.
• They are commonly used to represent visual
controls, graphical buttons, web site headers,
navigation links and advertisements.

10. SOUND FILES
• Sound files (Recorded Audio commonly called
WAVE or AIFF files) are a digital recording of an
actual sound whether that sound be an event, such as
a door closing, or music, such as a symphony
playing.
• Audio Interchange File Format (AIFF) is an audio
file format standard used for storing sound data for
personal computers and other electronic audio
devices most commonly used on Apple Mac
systems.
• WAVE or WAV (Waveform Audio File Format),
also named Audio for Windows, is a MS and IBM
audio file format standard for storing an audio bit
stream on PCs. It is the main format used on
Windows systems for raw and typically
uncompressed audio.

11. MUSIC FILES
• A digital music file (also known as a MIDI file,
from Musical Instrument Digital Interface) is not
an actual recording of a live sound.
• A MIDI file is a composed sequence of data that
is interpreted by the computer's sound synthesizer
and translated into actual sound.

12. VIDEO FILES
Digital video files (commonly called AVI or
QuickTime files) store moving picture
information in a format that can be played back
on the computer screen.

13. ANIMATION
• Animation is created by moving and changing
a Sequence of pictures or objects on cue,
similarly It is achieved by changing an image
slightly, one frame at a time, in a timed
sequence to give the illusion of movement.
• Animation is an optical illusion of motion due
to the phenomenon of persistence of vision,
and can be created and demonstrated in a
number of ways.

14. • Animation makes static presentations come
alive. It is a visual change that adds spice to a
project. Wipes, fades, zooms, dissolves are
almost a part of all authoring tools but animation
is much more than that; animation is actual
objects moving around in and out of your screen,
bugs crawling under disks, birds flying around
and so much more.
ANIMATION

15. TEXT
• With multimedia technology, the reliance on
textual information is complemented by sounds
and pictures that enhance understanding and
retention.
• In addition, hypertext enhances the meaning of
the written word. Hypertext is where a word, or
phrase in a section of text, can be referenced to
another related topic when the user clicks on the
word with his or her mouse; the computer then
displays the linked reference.

16. VIRTUAL REALITY
• An artificial environment created with computer
hardware and software and presented to the user
in such a way that it appears and feels like a real
environment.
• A computer-based technology for simulating
visual auditory, and other sensory aspects of
complex environments.

17. • Virtual Reality Modeling Language (VRML)
technology provides the user with the capability
to browse and fly through three-dimensional
space.
• In virtual reality, the computer controls three of
the five senses. Virtual reality systems require
extremely expensive hardware and software and
are confined mostly to research laboratories.

18. HAPTICS
• Haptics is the science of applying touch
sensation and control to interaction with
computer applications. Haptic technology can
be used to train people for tasks requiring
hand-eye coordination, such as surgery and
space ship maneuvers. Users can receive
feedback from computer applications in the
form of felt sensations in the hand or other
parts of the body.
• This technology today can be seen in Cell
phones and digital cameras but that is just the
tip of the ice berg. Interactive video games are
proving to be the latest trends in this area.

19. LATEST GADGETS
• Drum Rocker
• Developed by electronic
percussion leader Alesis,
this Rock Band-ready
drum kit-cum-video-game
controller is made of high-
impact plastic and durable
materials that make it feel
like a real drum kit.

20. • Hot on the heels of the first ever bass guitar
controller for Playstation and Xbox is the
Gene Simmons Axe bass guitar controller.

21. TASK:
• What applications can you suggest that could
implement Virtual Reality.
• Describe the benefits of using Haptics. Where
can this technology be most utilized. Find atleast
3 applications that use Haptics.