explanation of animation topic in multimedia compression and communication

1. Animation
Presentation
by
Jhansirani.R Assoc.prof/ECE

2. Introduction
• 50 years ago
Walt Disney
created
animated objects
such as Mickey
Mouse.

3. Animation on Internet
• Animation is an excellent way to
provide appeal on a web site
Animated text - using the HTML <blink>
command causes text to flash on and off
Animated GIF’s - using a software
program to create a series of gif files
such as GIF Builder
Macromedia Director applications -
animation played using Shockwave plug-in

4. Animation
Animation is the rapid display of a
sequence of images to create
an illusion of movement.
The word “animation” is a form of
“animate,” which means to bring to
life.
Thus when a multimedia developer
wants to bring an image to life,

5. Pictures in motion

6. Pictures in motion

7. Pictures in motion

8. 2-D Animation
• Two types of animation exist
Cel animation – based on changes
that occur form one frame to
the next
Path animation – moves an object
along a predetermined path on
the screen

9. Cel animation
 Cel stands for celluloid which is a clear sheet
with images drawn on them.
 The celluloid images are place on a
background that is usually stationary.
 The background remain fixed as the images
changes.
This animation moves at 10 frames pe

10. Path Animation
 Moves an object along a predetermined
path on the screen
 The path can be a straight line or
have a number of curves.
 Starts with keyframes (the first and
last frame of an action).
 The series of frames in between the
keyframes are drawn in a process
called tweening.


11. Path animation
• A path animation controls the position
and rotation of an object along a
curve.

12. 3-D Animation
• 3-D Animation involves three steps
1) Modeling – creating the broad contours
and structure of 3-D objects and scenes
2) Animation – defining the object’s motion
3) Rendering – giving objects attributes
such as color, surface textures, and
amounts of transparency

13. 3-D Animation Special Effects
• Morphing – blending together two images
into a series of images
• Warping – distorts a single image
• Virtual Reality – creates an environment
that surrounds the user so that he or she
becomes part of the experience

14. Morphing
Where one image transforms into
another
Software: Avid’s Elastic Reality,
Black Belt’s WinImages, Gryphon
Software’s Morph, Human
Software’s Squizz, MorphWizard,
Unlead’s MorhStudio

15. The Power of Motion
Visual effects such as wipes,
fades, zooms, and dissolves are
available in most authoring
packages.
But animation is more than wipes,
fades, zooms, and dissolves.
Until Quick Time and AVI motion
video became more common place
animations were the primary

16. Principles of Animation
 Animation is possible because of a
biological phenomenon known as
persistence of vision and The
psychological phenomenon called phi
 An object seen by the human eye
remains chemically mapped on the eye’s
retina for a brief time after viewing.
 Combined with the human mind’s need to
conceptually complete a perceived
action.

17. Animation
Animation adds visual impact.
Persistence of vision allows a
series of separate images to
blend together into a visual
illusion of movement.

18. Kinematics
 Kinematics is the study of the
movement and motion of structures
that have joints, such as a walking
man.
 Need to calculate the position,
rotation, velocity, acceleration of all
the joints and articulated parts –
knees, bend, hips flex, shoulders
swing, head .

19. Computer
Animation
Typically employees the same
logic and procedural concepts as
cel animation
You can usually set your own
frame rate
At 15 frames a second the
animation may appear jerky and
slow

20. Animation and Frame
Rates
TV video builds 30 entire frames
or pictures every second.
Movies are shot at a shutter rate
of 24 frames per second, but
using projections tricks the flicker
is increased to 48.
On some projectors each frame is
shown 3 times before the next
frame, for a total of 72 flickers

21. Animation Techniques
Computers have taken a great deal of
handwork out of the animation and
rendering process.
And commercial films have utilized
the power of the computers.
Jurassic Park,
Beauty and the Beast,
Toy Story,
Avatar

22. Animation File Formats
Software File Format
Director .dir & .dcr
Animator Pro .fli
Studio Max .max
Super Card and Director .pics
Windows Audio Video Interleaved .avi
Macintosh .qt & .mov
Motion Video .mpeg
CompuServe .gif
Flash .swf
Shockwave .dcr