Nowadays, 3D pictures or images, which are produced using stereo photography, have found wide applications. They can be used for educational purposes, as learning tools and entertainment tools. 3D images have the ability to change the perception of a person seeing it on the screen. Now-a-days, 3D pictures are available in every format imaginable with a wide range of choices.
Autostereogramming is one of the best 3D images options available to the masses. It is basically an advanced form of the stereogram, which makes use of a laser beam to create the image. The 3D images are generated by the moving object(s) in the image on to a flat surface. Using this viewing technique, anyone can get a feeling of being close up to the action taking place.
In the past, stereograms involved two photographs, which were stitched together using opaque material such as plastic. Stereograms used a mirror image, so that the scene appeared as though it was seen through the eyes of someone who was looking right at it. These images were then projected onto the retina of the eyes, which made the stereograms look as if they were coming from right across one’s nose. Now-a-days, 3d pictures can be made in every imaginable format, using a wide range of available technologies. Autostereograms can be done on regular 2D television screens or LCD or plasma TVs. In fact, some of the more sophisticated stereograms can be done with a combination of these devices.
A 3d image is a computer generated image. Earlier, 3d pictures were not just images, but also a way of conveying a message. In fact, many advertisers make use of 3d images in their commercials to make their messages more appealing to the viewers. The technology is constantly improving and being introduced in different forms, and 3d autostereograms are a great example of such technology.
Nowadays, free-vision methods of 3d pictures are available in the form of software programs. Free-vision fusion offers the viewer with a better viewing option and a much wider variety of scenes. This type of software program gives the freedom to alter any scene with the use of different cameras, allowing the viewer to view the scene as though he were looking right into the camera. Some of the advantages of this viewing method are: viewing is possible across different monitors and for users of any operating system, viewing is simple, more information can be stored in the frame, and quality is improved, and the final output is of superior quality regardless of the source.
Another type of 3d picture viewing is the parallel viewing method, also known as the binocular viewing method. In this viewing method, the viewer views the 3d image either by using a pair of stereo glasses or by using one pair of glasses connected through a cable to each eye. With the help of this method, the viewer is able to view the 3d image in two dimensions. This is very convenient for those who wish to view many different images at the same time. However, this type of viewing may be difficult for people who have problems with convergence or do not wish to adjust their eye position during the viewing session.