At first glance, a stereogram is a chaotic image, but if you look closely at it, you can see a three-dimensional object. This does not require any additional devices - training is enough.
Instructions
Step 1
First, learn to do an exercise similar to that used in regular eye gymnastics. Focus your gaze alternately on an object located in the distance, then on an object located next to you. Train your eye muscles to switch your gaze from a distant object to a close one instantly and without hesitation.
Step 2
At arm's length from your eyes, place two pencils vertically so that the distance between them is about a centimeter. Direct your gaze to a distant object as if through them. If it seems to you that there are not two pencils, but three, you are on the way to success.
Step 3
Gradually increase the distance between the pencils. Each time, make sure that their apparent number is equal to three, and the average apparent pencil does not double. Stop training when you can get this result with a distance between the pencils of about ten centimeters.
Step 4
Now place the monitor with the stereogram displayed on its screen (or a printout of such a picture) at arm's length from the eyes. Choose a scale so that the distance between adjacent repeating sections also does not exceed ten centimeters. Look into the distance, almost oblivious to the stereogram. You will soon see a 3D image of the object.
Step 5
Finally consolidate the skill by looking at several dozen different stereograms. Sooner or later, you’ll learn to adjust your eyes as needed by looking directly at the screen, rather than at an object in the distance. Pay attention to the fact that when you move the head, it is impossible to view the stereoscopic image from different sides - it seems to move with the head. This disadvantage is inherent not only in stereograms, but also in ordinary stereopairs. It is finally eliminated only in holograms.
