Difference between 3D technology & HD ?

3D (three-dimensional) technology seems to have come to the forefront, thanks to the worldwide success of the film Avatar and other 3D releases. So what is 3D and how does it compare to high definition?

Well, high definition (also known as Hi-Def) is a video image quality with a significantly higher image resolution than traditional standard definition (or SD). High definition강남레깅스룸 typically has between 1 and 2 million pixels per frame, which is probably 5 times more than standard definition. Therefore, the picture quality is very high and sharp, not comparable to SD.

On the other hand, 3D is a totally different dimension. When watching a video in 3D format, the images seem to jump out of the screen and provide a lifelike experience (as if you were experiencing it on the spot). The 3D experience is achieved through a technique called stereoscopy.

It is based on the way the human brain and eyes work together. The pupils of a person’s eyes are about 6.5 inches apart, so each eye sees a scene from a different angle and generates a unique image. The brain fuses the images into a single image. The slight difference between the left and right eye’s image allows the brain to judge depth.

There are three main types of 3D technology and each works in a different way:

The first type, anaglyph technology, is the most familiar (the red and blue paper glasses), but usually the 3D effects are not as good. This type of technology is often used in cinemas, especially since red and blue glasses are a cheap option.

The second type, polarized technology, is the technology you have experienced when watching 3D movies in an IMAX theater, e.g. Avatar 3D, Alice in Wonderland 3D and others. To create the 3D effect, two images are projected onto the same screen through different polarization filters. The viewer wears inexpensive glasses that also contain a pair of different polarization filters.

The third type, active technology, is becoming more common and standard for home 3D viewing. With this technology, a high-definition television displays one image to the left eye and another to the right. The viewer wears active glasses with liquid crystals that quickly block each eye to ensure that each eye sees only the corresponding image displayed on the 3D TV.