![]() ![]() ![]() Most autostereograms (including those in this article) are designed to be viewed in only one way, which is usually wall-eyed. There are two ways an autostereogram can be viewed: wall-eyed and cross-eyed. When viewed with the proper vergence, an autostereogram does the same, the binocular disparity existing in adjacent parts of the repeating 2D patterns. A stereoscope presents 2D images of the same object from slightly different angles to the left eye and the right eye, allowing us to reconstruct the original object via binocular disparity. A hidden 3D scene emerges when the image is viewed with the correct convergence.Īutostereograms are similar to normal stereograms except they are viewed without a stereoscope. In this type of autostereogram, every pixel in the image is computed from a pattern strip and a depth map. One such autostereogram is illustrated above right. The well-known Magic Eye books feature another type of autostereogram called a random dot autostereogram. When viewed with proper convergence, the repeating patterns appear to float above or below the background. The simplest type of autostereogram consists of horizontally repeating patterns (often separate images) and is known as a wallpaper autostereogram. The illusion is one of depth perception and involves stereopsis: depth perception arising from the different perspective each eye has of a three-dimensional scene, called binocular parallax. In order to perceive 3D shapes in these autostereograms, one must overcome the normally automatic coordination between accommodation (focus) and horizontal vergence (angle of one's eyes). Answer: What is Single Image Random Dot Stereogram mean?Īn autostereogram is a single-image stereogram (SIS), designed to create the visual illusion of a three-dimensional (3D) scene from a two-dimensional image. ![]()
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