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Broadcast Engineering on 3-D
Posts Tagged ‘viewing’
by Michael Grotticelli January 21st, 2011
 The American Optometric Association said 3-D viewing for children might help uncover subtle disorders that, left uncorrected, often result in learning difficulties. The debate over whether viewing 3-D entertainment can be harmful to your health continues to vex consumers of all ages, and it doesn’t help that there seems to be an endless wave of conflicting claims regarding the “truth.”
Following Nintendo’s warning to small children to avoid viewing its 3-D games, the American Optometric Association (AOA), representing U.S. optometrists, said 3-D viewing of movies, TV and even on Nintendo’s 3DS game console isn’t necessarily bad for adults or children.
In fact, the optometrists group said 3-D viewing for children might actually help uncover subtle disorders that, left uncorrected, often result in learning difficulties. In this context, it is not enough to have 20/20 visual acuity. Eye muscles must be coordinated well enough to experience single, clear and comfortable vision by maintaining alignment of both eyes. Read the rest of this entry »
Tags: 3DS, American Optometric Association, children, Nintendo, video games, viewing
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by Michael Grotticelli January 7th, 2011
 Nintendo cited experts who said that both 3-D cinema and TV viewing could negatively affect the eye development of young children. Nintendo, the Japanese maker of video gaming devices, has issued a health warning concerning the 3-D function of its new DS gaming console, recommending children aged 6 and younger not play with it to prevent damage to their eyes.
The game maker not only included its own product, but also cited experts who said both 3-D cinema and TV viewing can affect the eye development of young children.
“We will offer 2-Ds alone to children aged 6 and younger as continuing to watch 3-D images for a long time could negatively affect the development of their eyes,” Nintendo warned on its website in advance of a user trial in Japan. Read the rest of this entry »
Tags: 3-D, 3DS, children, health warning, Nintendo, platform, video games, viewing
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by Michael Grotticelli July 7th, 2010
 Monster Cable’s Vision Max 3-D glasses promise universal compatibility with all 3-D TVs, but you’ll need a base station to make it work. Because those quirky glasses continue to be the biggest single issue to widespread adoption of 3-D television among the average consumer, several vendors are attempting to build glasses that will work with any brand of 3-D TV set. It just makes sense.
Indeed, current 3-D TVs carry a unique problem. Only glasses built by a certain manufacturer will work with that manufacturer’s 3-D TV set. Therefore, Samsung’s glasses won’t work with a Panasonic 3-D set. This has prevented third parties from making cheaper glasses to keep prices lower. Read the rest of this entry »
Tags: 3DTV, glasses, viewing
Related Topics: Broadcast, News, Products |
by Michael Grotticelli June 3rd, 2010
 Among its many advantages, plasma technology has never had an issue with motion blur. While LCD TV models now vastly outsell plasma TV sets for DTV and HDTV viewing in the home, technically speaking, plasma may offer better 3-D images due to its faster processing speed (refresh rate) and higher contrast ratio.
The eye perceives higher quality when there’s a big visual difference between blacks and whites. This is the contrast ratio, and plasma technology generally provides a greater contrast ratio than LCD technology. Blacks are deeper on plasma screens than on LCD screens because LCDs use tiny crystals to block the light when creating black, which still allows traces of light to get through. Even if an LCD screen could go to all the way to black as well as a plasma screen, it can’t do it as fast. Plasma screens can go to black 60 times faster than LCD, making it measurably better in this area. Read the rest of this entry »
Tags: 3DTV, LCD, Liquid-crystal display, Plasma, television, viewing
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by Michael Grotticelli May 24th, 2010
 Today, side-by-side stereoscopy is the most widely accepted method for delivering 3-D video. When one considers 3-D imaging, there is a lot of history and a striking array of methods and technologies to consider. The first 3-D imaging dates back to 1844, when the Scottish inventor and writer David Brewster introduced the stereoscope, a device that could take photographic pictures in 3-D. Through fits and starts, 3-D has had a long and convoluted history that is still far from unresolved.
In the 1950s, when TV became popular in the United States, many 3-D movies were produced. The first was “Bwana Devil” from United Artists, which could be seen all across the United States in 1952. Subsequently, TV stations began airing 3-D serials based on the same technology as 3-D movies. Read the rest of this entry »
Tags: 3DTV, content, history, stereoscopy, viewing
Related Topics: Acquisition, Application, Broadcast, Film, News |
by Michael Grotticelli May 7th, 2010
 Jannick Rolland, a professor at the University of Central Florida’s School of Optics said watching 3-D content could put a strain on your eyes if the system is not well-implemented. Three-dimensional TV is being introduced into the marketplace with very few short-term studies and no long-term studies about the technology’s effect on the health of viewers.
Last month, Samsung issued a warning about possible health effects associated with 3-D TV, including altered vision, lightheadedness and even stroke or epileptic seizure. Researchers from the University of California, Berkeley and the University of Washington have published papers that found that visual disparities in 3-D TV images can put physical strain on viewers.
Many questions remain regarding the one-size-fits all approach that has to be taken for mass audiences to enjoy the 3-D experience, Jannick Rolland, a professor at the University of Central Florida’s School of Optics, told EETimes. Rolland is known as a pioneer in virtual reality studies.
Read the rest of this entry »
Tags: 3DTV, experience, health issues, University of California, viewing
Related Topics: Application, Broadcast, Film, Infrastructure, Products |
by Michael Grotticelli April 5th, 2010
 When viewing movies, most less than two hours in length, binocular dysphoria has not been a huge issue for audiences. Most 3-D display technology, whether in the theater or at home, requires viewers to wear electronic glasses that are timed to open and close rapidly. A slightly different image is projected to each eye, and from that difference, the brain creates the illusion of depth.
However, our brains process visual information in many different ways, and human depth perception is a very complicated business. The brain uses 10 different cues to figure out the distance of an object. One if them is parallax, which is used by most 3-D TVs. For 3-D to work, the brain must reject several of the other cues in favor of parallax. Read the rest of this entry »
Tags: 3DTV, binocular, dysphoria, medical, viewing
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Michael Grotticelli is writer and editor of Broadcast Engineering’s “Beyond the Headlines” and “Sports Technology Update” e-newsletters. Each week, he provides a fresh perspective on the latest in 3-D technologies and innovations as well as report on real-world applications of 3-D in the broadcast, professional video and film industries.
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