|
|
When humans perceive the environment around them, each eye sees a different
perspective image. These two images give rise to the perception of true
depth.
Most printed images which look 3D are classified as monoscopic images. Monoscopic images try to simulate depth by using shadows and rendering techniques. The image above is an example of a flat monoscopic image. A stereoscopic image, on the other hand, appears to have real depth where objects can even seem to leave the surface of the display device and hover in the middle of the room. The "canvas" of a monoscopic image is a flat surface. For a stereoscopic image, the "canvas" transforms into a window through which a true 3D environment appears. If you can relax your eyes, try staring at the two images below. Slowly cross your eyes until the two images merge. You should then see three images. If the images don't quite line up, try tilting your head from side to side a little. You must relax for this to work. The middle image will be a representation of a true 3D stereoscopic image. Note: The image below is a cross-eye image, see the next section for tips on how to view crossed eye images. 
Warning: If you experience eye fatigue or discomfort, take a break. |
