• Background
  • Instructions
  • Illustration
  • Quiz


The anaglyph is another form of stereogram and the technique generally used in older 3D movies. This method of creating anaglyphs is illustrated in ISLE 7.9. If you don't have glasses or just wish to see these the depth of these images in another way you can use this version of the activity.

This activity takes advantage of the motion depth cue, motion parallax. One eye's image is presented and then alternated with the image in the other eye. Most objects are in a slightly different position and the degree of difference is related to depth. That is the result of the binocular disparity. The same way that position changes between the two eyes is also how we extract depth from motion parallax. Instead of the differences of position being between two eyes, it is a difference in motion, but the basic geometry is the same.

See the Instructions tab to know how to use this activity.


Full Screen Mode

To see the illustration in full screen, which is recommended, press the Full Screen button, which appears at the top of the page.

Illustration Tab

The basis way to use this activity is to click on or touch the image. The displayed image will change to the image from the other eye creating apparent motion.


Below is a list of the ways that you can alter the illustration. The settings include the following:

Select Image to View: Choose from a list of images to try different images.
Open Your Own Stereo Image (?): if you have your own stereo image pairs, you can upload them here to use this activity to jitter the images.


Pressing this button restores the settings to their default values, which mainly goes to the first image selected.