3D technology is becoming more widely used in entertainment industries such as film and gaming. This development has helped increase the spread of information and knowledge especially among up-coming generations. Its present state of application signifies that 3D technology will grow and more development facilities around the globe will be needed. Types of 3D technology include anaglyphic, polarization, alternate frame sequencing, head mounted display, autostereoscopic, holography, volumetric display, and Pulrich effect.
Anaglyphic 3D
Anaglyph 3D is used to produce images in layered forms when viewed through red-cyan glasses. The images produce optical 3D effects that are applied in the art and film industries. In science, anaglyph 3D is used in 3D ultrasound to have stereoscopic images of the heart and other important body organs. Science images are often presented in anaglyphic 3D in order to give students a more complete view than 2D images are capable of.
- Anaglyph images: Anaglyph images are included on this site to provide more understanding.
- History of Anaglyphs: Anaglyphs came shortly after stereography. It was Helmholtz who first illustrated this in 1853.
- How 3D Glasses Work: The site gives a detailed description of how 3D glasses work in addition to their application.
Polarization 3D
Polarization is a technique used to make three dimensional images of objects when they are viewed through glasses. It works by applying the polarization of light. Polarization 3D is used in making polarized 3D sunglasses that form motion pictures like stereoscopy. The 3D images are formed because the intensity of light that reaches each eye is reduced.
- 3D Images: It is possible to view 3D images by polarizing glasses.
- What is Polarization?: Polarization is the technique used to make light waves travel in a single direction.
Alternate Frame Sequencing
Alternate frame sequencing is another 3D technology that is applied in making 3D films and games. In film-making, two cameras are used initially to capture the event. Afterwards, the images are placed on one film strip in an alternating order, that is the first left eye image, followed by the right-eye image. Alternate frame sequencing has been used to produce 3D illusion on old consoles such as the Sega Master System.
Head Mounted Display
The Head Mounted Display (HMD) is a stereoscopic device that is worn on the head. It has two small optic screens or a video visor at the position of the eye. It is used by engineers and scientists during laboratory tests to have several views of an object. It is also very useful in law enforcement and fire fighting.
Autostereoscopic
Autostereoscopic images are also known as "glasses-free 3D". They are stereoscopic images formed without the use of headgears or glasses. Some of the examples of autostereoscopic images are parallax barrier, lenticular lens, and light field displays. This 3D technology is applied in games and film industries.
Holography
Holography is a technique of producing 3D images by interference patterns on film. It was invented by Dennis Gabor in 1947. The invention came when studies were made to improve on the electron microscope. Holography is added to preserve, process, and collect information by optical means. The technique is also helpful in producing numerous quantities of lasers that are used in DVD recorders.
- Holography: Also known as "lensless photography". They are true 3D images.
- Types of Holograms: This site discusses the different types and holograms and their distinguishing features.
- Kinds of Holograms: Types of holograms include integral stereogram and computer generated stereogram.
Volumetric Display
Volumetric display is the technology that produces 3D images by emitting, scattering and sending illumination from defined regions in space. The types of volumetric 3D displays include swept volume display and static volume display. The technology is applied in the film industries to produce video and special effects. One of the demerits of volumetric display is that it requires a lot of bandwidth.
Pulfrich Effect
For 3D images to be formed with this concept, the visual cortex interprets lateral motion to have a depth component. This is possible since differences occur in signal timings between the two eyes. The effect is used in the film, game and TV industries. Some of the films and TV programs where this has been used include Doctor Who , Dimensions in Time, and 3rd Rock from the Sun .
Understanding 3D technology gives a better appreciation of its uses. Knowing how well 3D technology can help also creates more ways to get help from it especially when it is applied to the growth of small businesses. In this case, it will be a blessing to both the individual and the entire population where the application is made.
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