How To Display A Style Of A Picture In Word What is the Difference Between HD and 3D Technology?

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What is the Difference Between HD and 3D Technology?

3D (3-Dimensional) technology seems to have come to the fore, thanks to the worldwide success of the movie Avatar and other releases in the 3D category. So what is 3D and how does it compare to HD (high definition)?

Well, HD (also known as Hi-Def) is a video image quality with a considerably higher image resolution than traditional standard definition (or SD). HD generally has 1-2 million pixels per frame, which is probably 5x compared to SD. So the picture quality is very high and sharp, you can’t compare the quality with SD.

On the other hand, 3D is another dimension. When watching video in 3D format, the images seem to jump off the screen giving you a real experience (as if you lived it there and then). 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 an individual’s eye are about 6.5 cm (or 2.5 inches) apart, so each eye sees a scene from a different angle and generates a unique image. The brain then fuses the images together to create a single image. The small difference between the image of the right eye and the image of the left eye allows the brain to judge depth.

There are mainly three types of 3D technology and each works differently:

The first type, anaglyph technology, is the most famous (the red/blue paper glasses) but usually the 3D effects aren’t that great. This type of technology has been used numerous times in movie theaters, mostly because red and blue lenses are a cheap option.

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

The third type, active technology, is becoming more common and standard in terms of 3D viewing for home use. With this technology, an HDTV will display one image to the left eye and another to the right eye. The viewer then wears active liquid crystal shutter glasses and rapidly blocks each eye in sequence to ensure that each eye only sees the corresponding image displayed on the 3D TV.

If you want to learn 3D technology through video tutorials, click HERE

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