The brain, through experience, has learned to interpret the two flat images into a three-dimensional one. Each of our eyes sees a slightly different picture of the scene viewed. In the real world, we use our binocular vision to perceive distance. In the 1960’s, a psychologist, Bella Julesz made 3-D pictures with apparently random dots to see if people could perceive distance without any clue such as size. Stereograms are quite addictive as the open up a new world on your computer monitor, it seems so clear and fascinating, it is also used as a meditation tool in India.In this post I will quickly run through how you can create 3D images.
#STEREOGRAM MAKE YOUR OWN HOW TO#
If you cannot find the hidden image you should check our page on how to find hidden images. Sounds unbelievable, take a look at the Stereogram below. This is what often gives stereograms their ethereal window and meditative appeal.Stereograms are 3D images that are hidden in a 2D image.
After all, it is really a two-dimensional representation. Cross-eyed viewing is more likely to cause eyestrain.Īn interesting esthetic with stereograms is no matter how profound the effect of depth appears, all is in focus at one time. Cross-eyed viewing is frequently used for stereo-pairs. All stereograms on this site are made for parallel viewing. To the best of my knowledge, all hidden-image stereograms require parallel viewing. Eventually, your eyes will tell you which works with what. There is much confusion between Parallel and cross-eyed viewing. This is the most commonly used way for viewing stereograms.ĬROSS-EYED VISION: Each eye views the image separately, but right eye views left side, and left eye views right. PARALLEL VISION: Each eye locks on the image separately but parallel, as opposed to converging as with normal vision. There are several kinds of stereograms, but only two ways to view them for the 3D effect. The brain does not care, and the subtle differences within a 2D image's pattern create the 3D effect off the 2D surface. The stereo offset is innate to the 2D image, not an actual 3D environment. Unlike normal convergent vision, with stereograms we either diverge or cross our eyes to feed the brain subtle differences in 2D images. Stereopsis takes place within the brain, and that is key to the stereogram 3D effect. With this, each eye focuses on an object, seeing the same object on the same plane, but the small distance between each eye feeds the brain enough different information to interpret a sense of 3D depth.
Traditionally done with opto-mechanical devices: when such an effect is accomplished with the eyes alone it is called an autostereogram, or more often simply a stereogram.įrom birth, we learn to view the world using our normal stereo-vision. Since it is my wish to promote autostereograms as an art, rather than a science, I'll only try and give a quick overview of what we're dealing with.Ī stereogram is a flat two dimensional image viewed in such a fashion as to produce a three-dimensional effect.
#STEREOGRAM MAKE YOUR OWN CODE#
There are even programs and/or programming code available to make make your own SIS or SIRDS. There is a lot of information on the Internet concerning all aspects of autostereogram history, science, and creation.