3D means three-dimensional. Our physical environment is three-dimensional and we move around in 3D every day.
it refers to many areas like,width, length, and depth; 3D sound; 3D computer graphics.
Some of the tools humans use for depth perception:
- Stereoscopic vision: Two eyes provide slightly separate images; closer objects appear more separated than distant ones.
- Accommodation: As you focus on a close or distant object, the lenses in your eyes physically change shape, providing a clue as to how far away the object is.
- Parallax: As your head moves from side to side, closer objects appear to move more than distant ones.
- Size familiarity: If you know the approximate size of an object, you can tell approximately how far away it is based on how big it looks. Similarly, if you know that two objects are a similar size to each other but one appears larger than the other, you will assume the larger object is closer.
- Aerial perspective: Because light is scattered randomly by air, distant objects appear to have less contrast than nearby objects. Distant objects also appear less color-saturated and have a slight color tinge similar to the background (usually blue).
Reference:
http://en.wikipedia.org/wiki/3D
http://www.mediacollege.com/3d/intro.html
No comments:
Post a Comment