© 2008 Prentice-Hall, Inc.
Slide 3
Chapter 6 Objectives
Compare and contrast several types of computer graphics programs used by artists, photographers, designers, and
others.
Explain how computers are changing the way professionals and amateurs work with video, animation, audio, and music.
Describe several ways that computers are used to create multimedia materials in the arts, entertainment, education,
and business.
© 2008 Prentice-Hall, Inc.
Slide 4
Chapter 6 Objectives continued
Explain the relationship between hypermedia and multimedia, describing applications of each.
Describe several present and future applications for multimedia technology.
© 2008 Prentice-Hall, Inc.
Slide 5
Chapter 6 Tim Berners-Lee Weaves the Web for Everybody
Born in London in 1955
Wanted to create an open-ended
distributed hypertext system with no boundaries, so scientists everywhere
could link their work together
Invented the World Wide Web and gave it to all
Now works at MIT
Heads the World Wide Web
Consortium W3C
© 2008 Prentice-Hall, Inc.
Slide 6
Chapter 6 Focus on Computer Graphics
Painting: Bitmapped Graphics
Painting software:
Paints pixels on the screen with a pointing device
Pointer movements are translated into lines and patterns on the screen
Stores an image at 300 dots per inch or higher
© 2008 Prentice-Hall, Inc.
Slide 7
Chapter 6 Focus on Computer Graphics
Pixels: tiny dots of white, black, or color that make up
images on the screen
Palette of tools mimics real-world painting tools
Also contains other tools that are unique to computers
Bitmapped graphics or raster graphics: pictures that
show how the pixels are mapped on the screen
Color depth: the number of bits devoted to each pixel
Resolution: the density of the pixels
© 2008 Prentice-Hall, Inc.
Slide 8
Chapter 6 Focus on Computer Graphics
Image Processing: Photographic Editing by Computer
Allows the user to manipulate photographs and other high- resolution images with tools such as Adobe Photoshop
Far more powerful than traditional photo-retouching techniques
Can distort and combine photos as demonstrated in the tabloids Can create fabricated images that show no evidence of tampering
© 2008 Prentice-Hall, Inc.
Slide 9
Chapter 6 Focus on Computer Graphics
