Point Operators

  • Thomas Bräunl
  • Stefan Feyrer
  • Wolfgang Rapf
  • Michael Reinhardt


In this chapter as well as in the following two, elementary image operators and their parallel implementation are introduced. We differentiate between point operators, local and global image operators. Point operators are the simplest image operators in regard to complexity and computing time. They require no data from other pixels to process an input pixel into an output pixel, but simply calculate a single-parameter function with the input pixel as the parameter.


Colour Image Point Operator Gray Scale Gray Scale Image Histogram Equalization 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Ballard, D., C. Brown. Computer Vision, Prentice Hall, Englewood Cliffs NJ, 1982Google Scholar
  2. Jähne, B. Digital Image Processing, 4th Ed., Springer-Verlag, Berlin Heidelberg, 1997Google Scholar
  3. Poskanzer, J. pbmplus Public Domain Software Package, Unix Tools und Bild-Dateiformate für ppm, pgm und pbm, 1991Google Scholar
  4. Watt, A. Fundamentals of Three-Dimensional Computer Graphics, Addison-Wesley, Reading MA, 1989MATHGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2001

Authors and Affiliations

  • Thomas Bräunl
    • 1
  • Stefan Feyrer
    • 2
  • Wolfgang Rapf
    • 3
  • Michael Reinhardt
    • 4
  1. 1.Department of Electrical and Electronic EngineeringThe University of Western AustraliaNedlands, PerthAustralia
  2. 2.University of Tübingen, WSITübingenGermany
  3. 3.GAO mbHMünchenGermany
  4. 4.ProSieben Information Service GmbHUnterföhringGermany

Personalised recommendations