• 1. Internet Techniques and Web Formats
  • 1.1. Internet
  • 1.2. World Wide Web
  • 1.3. Browser, Plugins and Applets
  • 1.4. Client-Server-Model
  • 1.5. Web Graphics Formats
    • 1.5.1. What Raster Graphics are
    • 1.5.2. Raster Graphics Formats
    • 1.5.3. What Vector Graphics are
    • 1.5.4. Vector Graphics Formats
    • 1.5.5. Summary
  • 1.6. Self Assessment
  • 1.7. Summary
  • 1.8. Glossary
  • 1.9. Bibliography
  • 1.10. Metadata

1.5.1. What Raster Graphics are

Definition

Raster Graphics is a type of graphics that stores the images as a collection of pixels. (Minnesota State Archives) In graphics there are no lines, circles, or polygons, only pixels that are grouped to give the appearance of these elements. The colour of each pixel is individually defined. (CADD / GIS Technology Center) This series of pixels is often stored in a compressed format.

Raster Graphics

When zooming a raster graphic the individual pixels get visible. Thus the image quality is reduced:

Experience the individual pixels of a raster picture

Update: 26.1.2012 (eLML) - Contact - Print (PDF) - © CartouCHe 2004-2007 (Creative Commons) - layout based on YAML