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Thirty-Three

Chapter


 

Misc. Filters

Assorted candy, here are all the filters that don't fit anywhere else. You can for example find filters that makes stereographic images here.

 

Magic Eye

Extracted pic [1] Magic Eye is a way to create 3D stereo images in Gimp. I think everybody has seen 3D images in magazines. A strange-looking image that you have to look at in a certain way, and up pops a flower or something. Now you can do the same thing in Gimp. Here is how it works:

Example and parameters

Extracted pic [2]

Extracted pic [4]

Remember that the brighter the object is in the map image, the higher it will pop up in the stereo image.

 

Stereogram

Extracted pic [5] Creates a 3D stereogram of a grayscale image (similar to Magic Eye). It works like this:

How to:

  • Create a simple grayscale image (the popup).
  • Bring up the plug-in.
  • Choose a background (an RGB image of equal size).
  • Choose stereogram type: SIS or SIRDS.
  • press OK.
Extracted pic [6] Now you have a stereogram. Take a good look at it with the focus slightly behind the image, until the 3D representation of your image appears in the stereo image.

Parameters

If you check SIS (Single Image Stereogram), the background will be used as a pattern. In SIRDS (Single Image Random Dot Stereogram), you'll only get a stereo noise for background.

 

Video

Extracted pic [7] This plug-in creates the illusion that the image is an ordinary low-res/dot pitch video monitor. You can achieve this with different patterns, which means that you can create a whole lot of "bad monitors". By default the pattern is horizontal, but you can by checking Rotated let it be vertical instead. Use Additive to get a realistic look. For an explanation of Additive, see the Modes chapter. If you don't use Additive, the pattern will just get on top of the image and darken it a lot.

Extracted pic [8]

 


The Gimp User Manual
Last modified: 20 May 1998

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