Introduction to Computer Graphics Techniques and Applications
Computer Graphics Applications
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Transcript of Computer Graphics Applications
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Why Computer graphics
– Graphics is cool• I like to see what I’m doing• I like to show people what I’m doing
– Graphics is interesting• Involves simulation, algorithms, architecture…
– Almost no area in which graphical displays cannot be used
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Why should we study Graphics?
• Many of the leading scientists through the ages have been ‘visual thinkers’…
– Leonardo da Vinci
– Einstein– Clerk Maxwell
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Graphics Applications
– Computer Aided Design (CAD)
– Presentation Graphics
– Computer Art
– Entertainment
– Education and Training
– Visualization
– Image Processing
– Graphical User Interfaces (GUI)
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– Computer Aided Design (CAD)
– Design buildings, automobiles, aircraft, watercraft, spacecraft, computers, textiles, and many other products
– Wireframe & Surface Rendering
– Simulation of Vehicle Performance
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Wireframe & Surface Rendered Display
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Presentation Graphics
– Illustrations for reports
– Summarize financial, statistical, and economic data for research reports, managerial reports, consumer information bulletins, and other types of reports.
– Presentation Slides • Bar charts, Line graphs, Pie charts,
etc.,
– Project Management (Schedule & Progress)
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Computer Art
– Fine Art & Commercial Art
– Designing object Shapes and specifying object motions
– Paintbrush programs (Lumena, PixelPaint, SuperPaint)
– Mathematics Packages (Mathematica)
– Animation Packages (Anim8or, Swish,..)
– Graphics Tablet (Digitizer) & Stylus – Moving Objects (24 frames per second)
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Fractals
– A fractal is "a rough or fragmented geometric shape that can be subdivided in parts, each of which is (at least approximately) a reduced/size copy of the whole".
– The term was coined by Benoît Mandelbrot in 1975 and was derived from the Latin fractus meaning broken or fractured.
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Fractals
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Even 2000 times magnification of the Mandelbrot set uncovers fine detail resembling the full set.
A fractal that models the surface of a mountain
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Entertainment
– Motion pictures, music videos, and television shows.
– Sometimes the graphics scenes are displayed by themselves, and sometimes graphic objects are combined with the actors and live scenes.
– Morphing
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Motion Pictures
Series of still photographs on film, projected in rapid succession onto a screen
World's first motion picture film by Louis Le Prince, 1888
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Morphing
Morphing is a special effect in motion pictures and animations that changes (or morphs) one image into another through a seamless transition
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Education and Training
– Computer generated models of physical, financial, and economic systems are often used as educational aids.
– It helps the trainees to understand the operation of the system.
– Simulators for practice sessions or training of ship captains, aircraft pilots, heavy equipment operators, and air traffic-control personnel.
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SimulationA simulation is an imitation of some real thing,
state of affairs, or process.
Wooden mechanical horse simulator during WWI.
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Flight SimulatorThis 20' dome in the Netherlands has an actual cockpit inside. The simulated scenes are projected onto the dome, and the hydraulics move the unit.
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Visualization
– Scientists, engineers, medical personnel, business analysis, and others often need to analyze large amounts of information or to study the behavior of certain processes. –
tedious & Ineffective– To overcome this, a technique which trends and patterns
apparently is used called visualization.
– Numerical modeling of thunderstorms, Protein modeling, Molecular structure, an air pollution study, etc.,
– Scientific Visualization
(stored as graphics packages
for scientific studies)
– Business Visualization (stored as data sets for commerce
applications)
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Medical Visualization
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Scientific Visualization
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Image Processing– Image Processing – Applies
techniques to modify or interpret existing pictures
– Computer Graphics – to create a picture
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Graphical User Interfaces
– Windows, Menus, Icons and other graphical symbols
– Command User Interface & Graphical User Interface