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Graphics, Hypermedia, and Multimedia. Focus on Computer Graphics. Computer graphics include: Painting Software Digital Image Processing Drawing Software 3-D Modeling Software CAD/CAM Presentation Software. Painting Software. G r A p h i c S.

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Presentation Transcript
focus on computer graphics
Focus on Computer Graphics
  • Computer graphics include:
    • Painting Software
    • Digital Image Processing
    • Drawing Software
    • 3-D Modeling Software
    • CAD/CAM
    • Presentation Software

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painting software
Painting Software

GrAphicS

Pixels: tiny dots of white, black or color arranged on the screen

Bit-Mapped Graphics: pictures that are simple maps showing how the pixels should be arranged on the screen

Resolution: the number of pixels (dots) per inch

J a r g o n

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painting software4
Painting Software

Use pointing devices to “paint” objects, shapes or freehand script on the screen

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painting software5
Painting Software

Painting tools are used to create drawings

A variety of special effects can be added

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painting software6
Painting Software

Outlinedshapes can be filled with colors

Windows Paint

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digital image processing photographic editing by computer
Digital Image Processing:Photographic Editing by Computer

Why Digital Imaging Software?

  • Provides a powerful way to edit high resolution images captured by digital cameras and scanners
  • Allows photographs to be edited and combined (think of the supermarket tabloids)
  • Offers a way to touch up pictures and make them look more professional and polished

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digital image processing
Digital Image Processing

Combine it with other images to create this…

Start with this photo…

Or this…

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digital image processing software
Digital Image Processing:Software

Adobe Photoshop

  • Acquires images
  • Manipulates pixels
  • Layers – edited and stored independently
  • Used by professionals
  • Saves in other formats

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digital image processing software10
Digital Image Processing:Software
  • Coral PhotoPaint
  • Adobe Photoshop Elements
  • Microsoft Picture It!
  • Jasc Paint Shop
  • Apple iPhoto

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drawing object oriented graphics
Drawing:Object-Oriented Graphics

Object-Oriented Software offers drawing tools similar to painting software

Pointing devices are used to create various shapes

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drawing
Drawing

Shapes in Object-Oriented Software:

  • Are stored as formulas (not pixels) that describe how to draw that shape
  • Drawings are smoother and require less memory than bit-mapped drawings
  • Resolution is not fixed

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drawing software
Drawing: Software
  • Adobe Illustrator
  • Macromedia Freehand
  • Corel Draw

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painting pixels vs drawing object shapes
Painting Pixelsvs.Drawing Object Shapes

When painting with pixels:

  • You have more control over textures, shading, and fine detail
  • Use for creating screendisplays (for video games, multimedia presentations, and Web pages)

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painting pixels vs drawing object shapes15
Painting Pixelsvs.Drawing Object Shapes

When painting with pixels:

  • Use for simulatingnatural paint media
  • Use to embellishphotographic images

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painting pixels vs drawing object shapes16
Painting Pixelsvs.Drawing Object Shapes

When drawing object shapes:

  • shapes and lines are cleaner and smoother
  • use for creating printed graphs, charts, and illustrations

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graphics file formats
Graphics File Formats
  • Native file formats
  • For commercial printing
  • Tiff – bit-mapped, images from scanners, widely supported
  • EPS – encapsulated postscript

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graphics file formats18
Graphics File Formats

Platform dependent Paint programs

  • BMP – Windows bit-map
  • PICT – Macintosh, both bit-mapped and object-oriented

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graphics file formats for the web
Graphics File Formats:for the WEB

GIF

  • 256 possible colours
  • Lossless compression
  • JPEG
  • Photo-realistic
  • Lossy compression

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presentation graphics bringing lectures to life
Presentation Graphics:Bringing Lectures to Life

Presentation graphics software is used to create visual aids for:

  • Lectures
  • Training and education sessions
  • Sales and product demonstrations
  • Meetings

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presentation graphics bringing lectures to life21
Presentation Graphics:Bringing Lectures to Life
  • Users can Enter textin outline form
  • Enhance text with font and style changes, clip art, audio, and videoclips
  • Add Special effects and transitions to computer “slide shows”(like this one)

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cad cam from pictures to products
CAD/CAM: From Picturesto Products

Engineers,architects, and designersuse CAD/CAMsoftware to designor manufactureproducts

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cad cam from pictures to products23
CAD/CAM: From Pictures to Products
  • CAD (computer-aided design) is a modern drafting tool for designers
    • Designs can be tested under various conditions before being built
  • CAM (computer-aided manufacturing) is a program that controls the manufacturing of parts
    • CAM uses data from a CAD programto build the part that was designed

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dynamic media beyond the printed page
Dynamic Media:Beyond the Printed Page
  • Modern media often contains dynamic information that changes over time or in response to user input

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animation graphics in time
Animation: Graphics in Time

Create the illusionof animation fromstill images with animated graphics

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animation graphics in time26
Animation: Graphics in Time
  • Tedious tasks have been automated with computers and animation software
  • Artist draws the key frames only
  • In-between frames are computer-drawn
  • Toy Story was the first full-length animated movie created on a computer

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3 d modeling software
3-D Modeling Software

Illustrators and designers use this software to add depth to two dimensional objects

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3-D Modeling Software

Objects can be stretched…rotated … and combined with other objects

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3 d modeling software29
3-D Modeling Software

Volume based

  • Medicine and scientific visualization
  • Surface based
  • Photo-realistic
  • TV, movies, computer games

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3 d modeling software30
3-D Modeling Software

Surface based

  • High performance computers and custom software
  • E.G. Jurassic Park: dinosaurs are 6.5 minutes
  • Required 50 people, 18 months and $15 million equipment

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3 d modeling process
3-D Modeling Process

Model description

    • Solids
    • Polygon surface
    • Wire-frame
  • Artist models (defines) a 3-D actor

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3 d animation
3-D Animation
  • Places the 3-D actor into the scene
  • Scene is composed of multiple actors and background and timing and camera movement
  • Scenes are rendered: computer software does the lighting, shading, perspective, hidden surface removal

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desktop video computers film and tv
Desktop Video:Computers, Film and TV

Video digitizers allow you to capture analog video images as digital data that can be stored and manipulated in the computer’s memory

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interactive multimedia eye ear hand and mind
Interactive Multimedia:Eye, Ear, Hand, and Mind

Combine text, graphics, animation, video, music, or sound effects in such a way that the user takes an active part in the experience

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multimedia authoring making mixed media
Multimedia Authoring:Making Mixed Media

Create and edit multimedia projects.

  • Begin with source documents (text, graphics, video clips, music, and sound files)
  • Multimedia authoring software allows you to combine the individual sources
  • Authoring software allows the project to be interactive (requiring the user to take an active role)

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