• 1. Computer Graphics
  • 1.1. Screen
    • 1.1.1. Have a Look!
    • 1.1.2. Pixels and Resolution
    • 1.1.3. Coordinate System of a Screen
    • 1.1.4. Unit-Summary
  • 1.2. Colours
  • 1.3. Rasterisation
  • 1.4. Anti-Aliasing
  • 1.5. Geometric Transformations
  • 1.6. Curves
  • 1.7. Paths
  • 1.8. Self Assessment
  • 1.9. Summary
  • 1.10. Recommended Reading
  • 1.11. Glossary
  • 1.12. Bibliography
  • 1.13. Metadata

1.1.2. Pixels and Resolution

Pixels

As you could experience in the example above, an image displayed on a screen is composed of thousands of picture elements, so called pixels. The pixel size is about 0.2 x 0.2mm on conventional displays or even smaller on high-resolution displays. A typical screen size is about 1024 x 768 pixels.

Image Resolution

The resolution indicates how many pixels (dots) are displayed within an inch (1 inch = 25.4mm).

Example for resolution units:

Example for Resolution

The higher the resolution is, the better is the appearance of fine details.

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