The advantage of Anaglyph 3D is that it works for both video and still images and it’s cheap to implement. This stereoscopic method is often referred to as Anaglyph. One of the earliest 3D illusions where achieved with the well known paper 3D glasses, with a red lens for one eye, and a blue (cyan) lens for the other eye. Anaglyph – Old school Red and Blue 3D Glasses For example: you can’t walk to a different position and look behind an item, the items remain in the exact same perspective as they were from before you moved to a different position. They give the impression that you’re looking at 3D objects, but it’s really not 3D at all. If we now combine these 2 images in our brains, depth will be perceived.Īgain : The current methods for 3D display are only illusions. However when looking at object B, only with your right eye, you would see at least a part of object A behind object B. When looking at object B, only with the left eye, you would not see object A. Yet each eye see a fraction that cannot be seen by the other eye (brighter areas). Simplified: Both eyes see the overlapping, darker, area. As you can see in the illustration above, under the assumption than an eye has roughly a 140 degree angle of view, we see how both viewable areas overlap yet under a slightly different angle.
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