This site is devoted to mathematics and its applications. Created and run by Peter Saveliev.


From Mathematics Is A Science
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The main source of blurring comes from averaging of the optical information.


  • The camera may be out of focus, then the incoming light appear smeared.
  • In astronomical imaging incoming light in the telescope may be slightly bent by turbulence in the atmosphere.
  • There is motion blur.
An image.
Its blurry version.

Gaussian blur is found under Tools in Pixcavator.